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National Tel : 0861040506
International Tel : +27117925226
Cellular : 0832514312 / +27832514312
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LIFTING - RENFROE Main catalogue
Reliability equals safety equals less downtime and more continuous workflow - any place where you need to lift, shirt and move big weights. Be assured that all our products have to outperform the specification they were designed to meet; a solid fact that holds firm. That's why its safe to say Renfroe products last longer
More up time. Less down time
NOTICE OF EXCLUSION OF WARRANTY
RENFROE HAS HEREIN SET FORTH IN CONSPICUOUS LANGUAGE AN EXCLUSION OF ANY WARRANTY EITHER EXPRESSED OR IMPLIED, WHICH IS NOT SPECIFICALLY AND PARTICULARLY CONTAINED HEREIN. PLEASE REFER TO THAT STATEMENT FOR REPRESENTATIONS AND WARRRANTIES OF PRODUCTS MANUFACTURED BY J.C. RENFROE & SONS
Copyright © 2015 J.C. Renfroe & Sons
11COM143810
Supersedes Catalogue 4COM123810
SPECIAL INDUSTRIAL SUPPLIES PTY LTD.
Tel National: 0861040506
Tel International: +27117925226
Cell: +27832514312
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Unit 21, Acacia Industrial Park
17 Arbeid Avenue, Strydom Park.
South Africa.
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LP 24
Table of Contents
Table of Contents
J.C. RENFROE & SONS HAS BEEN A LEADER IN THE MANUFACTURING AND MARKETING OF LIFTING PRODUCTS FOR OVER 70 YEARS.
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Renfroe products are manufactured in Jacksonville, Florida and Germany. A worldwide network of stocking distributors provides a readily available source of supply and service.
We have a distinguished heritage at J.C. Renfroe & Sons. When our country has called, we have responded. The historic Liberty Bell in Philadelphia, Pennsylvania, needed to be relocated with great care. Our lifting products
were used. After the space shuttle Challenger tragedy, we were called to design a special clamp to aid in the recovery of the debris. When they needed lifting capabilities for our nuclear submarines, we were there. History
has proven when our country needed the very best, Renfroe was called.
The Renfroe legacy began in 1940 with Joseph Renfroe and his four sons. The standard of excellence on which the company was founded exists today with J.C. Renfroe II, grandson of the founder, overseeing the final
inspections of Renfroe clamps.
Renfroe’s innovative technology and streamlined manufacturing produces the highest quality lifting products in the industry. Our close-knit employee family continues to work with the same dedication to excellence as our founders.
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Model
PLATE AND FABRICATED – VERTICAL ONLY
VERTICAL + 90
VERTICAL + 90 + SIDE PULL
VERTICAL + 180
VERTICAL + 180 + SIDE PULL
STRUCTURAL – SHAPES
Renfroe Clamp Index
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HORIZONTAL
BEAM
PULL
NON-MARRING
DRUM LIFTERS – Vertical Only
TOOL
RUD. MADE IN GERMANY.
Model BD
The Model BD is a vertical lifting, non-locking clamp used primarily for steel warehousing and bench work where a locking type clamp is not essential. The clamp is a low-cost, low maintenance tool that features lightweight and compact size. It is recommended for use and application where constant tension is applied to the lifting shackle throughout the entire operation.
MODEL BD EXPLODED VIEW
BD Clamp
FR Clamp
Locking Type
Model FR
The Model FR is a vertical lifting tool for relatively light work. It is small and easy to handle in capacities through three tons. It incorporates a “Lock Closed” feature which facilitates attaching the clamp to the plate.
MODEL BD EXPLODED VIEW
FRD Clamp
Locking Type
Model FRD
The Model FRD is a vertical lifting clamp that incorporates two Model FR clamps into one and is used for heavy duty work where it is desirable to spread the gripping surfaces with two points of contact. The clamp contains two “Lock Closed” mechanisms which are activated by a single chain and a manually operated “Lock Open” mechanism.
MODEL FRD EXPLODED VIEW
RO Clamp
Locking Type
Model R
The Model R is a vertical lifting clamp primarily used in the handling of heavy steel plate in a wide range of plate thicknesses. Specific models are available for handling “hot” plate (refer to factory for maximum temperatures and recommended application). The Model R incorporates a “Lock Open,” “Lock Closed” feature which facilitates attaching and
removing the clamp from the plate.
MODEL R EXPLODED VIEW
R Clamp
Non-Locking Type
Model RO
The Model RO incorporates a “Lock Open Only” feature allowing the clamp to be “Locked Open,” lifted onto a “hot” plate and the lock released without the operator coming in close contact with the “hot” plate.
MODEL RO EXPLODED VIEW
S Clamp
Locking Type
Model S
The Model S is a vertical lifting clamp and is an effective tool for construction and erection. It incorporates a “Lock Open,” “Lock Closed” feature which facilitates attaching and removing the clamp from the plate.
MODEL S EXPLODED VIEW
SD Clamp
Locking Type
Model SD
The SD is a vertical lifting clamp that incorporates two Model S clamps into one and is used for heavy duty work where it is desirable to spread the gripping surfaces with two points of contact. It incorporates a “Lock Open,” “Lock Closed” feature which facilitates attaching and removing the clamp from the plate.
MODEL BD EXPLODED VIEW
J Clamp
MODEL J EXPLODED VIEW
Locking Type
Model J
The Model J is a vertical lifting clamp capable of turning a single plate or member from horizontal to vertical and back to horizontal through the same 90 degree arc.
L Clamp
Model L
The Model L is an ergonomic vertical lifting clamp capable of turning a single plate or member from horizontal to vertical to horizontal through a 90 degree arc. The "Lock open - Lock Closed" feature facilitates attaching and removing the clamp from the plate.
MODEL L EXPLODED VIEW
LJ Clamp
Locking Type
Model LJ
The MODEL LJ is a vertical lifting clamp capable of turning a plate from horizontal to vertical and back through the same ninety-degree arc. It is small and easy to handle in capacities through three tons. The Model LJ incorporates a “Lock Closed” feature, which facilitates attaching the clamp to the plate.
MODEL LJ EXPLODED VIEW
TL Clamp
Locking Type
Model TL
The Model TL is a vertical lifting clamp capable of turning a single plate or member from horizontal to vertical and back to horizontal through the same 90 degree arc.
MODEL TL EXPLODED VIEW
JP Clamp
Locking Type
Model JP
The Model JP is a vertical lifting clamp capable of turning a single plate or member from horizontal to vertical and back to horizontal through the same 90 degree arc. Permits side loading of lifting shackle up to 90 degrees by derating of clamp’s rated capacity. Refer to FIGURE 1 for derated capacities.
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Model JP incorporates a pivoting shackle that permits side loading of the lifting shackle at 100 percent of rated capacity from vertical to 30 degrees, 75 percent of rated capacity between 30 and 45 degrees and 50 percent of rated capacity between 45 and 90 degrees
MODEL JP EXPLODED VIEW
LP Clamp
Model LP
The Model LP is an ergonomic vertical lifting clamp capable of turning a single plate or member from horizontal to vertical to horizontal through a 90 degree arc. Permits side loading of lifting shackle to 90 degrees by de-rating of clamp’s capacity. Refer to FIGURE 1 for de-rated capacities. The “Lock Open – Lock Closed” feature facilitates attaching and removing the clamp from the plate.
Model LP incorporates a pivoting shackle that permits side loading of the lifting shackle at 100 percent of rated capacity from vertical to 30 degrees, 75 percent of rated capacity between 30 and 45 degrees, and 50 percent of rated capacity between 45 and 90 degrees.
MODEL LP EXPLODED VIEW
DC Clamp
Locking Type
Model DC
Model DC is vertical lifting, locking and 180° turning clamp. The DC’s unique design, utilizing two movable gripping cams, allows this clamp to lift any load within its plate size range from 0 up to 6 ton with a 300 Brinell hardness or less.
MODEL DC EXPLODED VIEW
JA Clamp
Locking Type
Model JA
The Model JA is a vertical lifting clamp capable of turning a single plate or member from horizontal to vertical to horizontal through a 180 degree arc. It incorporates a push button auxiliary lock.
MODEL JA EXPLODED VIEW
LA Clamp
Model LA
Model LA is an ergonomic vertical lifting clamp capable of turning a single plate or member from horizontal to vertical to horizontal through 180 degree arc. It incorporates a push button auxiliary lock. The "Lock Open - Lock Closed" feature facilitates attaching and removing the clamp and plate.
MODEL LA EXPLODED VIEW
PCK Clamp
Locking, Screw Type
Model PCK-SL
The PCK Locking Screw Clamp is a versatile multipurpose lifting turning pulling clamp capable of lift and turn operations from the horizontal through 180 degrees arc. The clamp can also be used for the assembling of steel plates, structural members and welded sections. The clamp is generally used in pairs for the purpose of drawing two plates or members together or to a predetermined position adjacent to each other. The adjusting screw is used to accommodate various thicknesses of material and to facilitate the attachment of the clamp to the member being worked on.
MODEL PCK EXPLODED VIEW
RSC Clamp
Locking Type
Model RSC
The Model RSC is a lightweight screw clamp for bench work on steel plates of large thickness, and weighing less than 1000 lbs.
MODEL RSC EXPLODED VIEW
SCP Clamp
Locking, Screw Type
Model SCP
The Model SCP clamp is capable of handling steel plate from horizontal to vertical to horizontal through a 180 degree arc and may be used for handling plate at rolling and forming machines. These clamps feature a spring loaded pivoting cam jaw that "cams in" when a load is applied to the lifting shackle. Clamp is capable of handling plate horizontally when used in pairs or sets of pairs, or in a tripod arrangement.
MODEL SCP EXPLODED VIEW
SCSL Clamp
Locking, Screw Type
Model SCSL
The MODEL SCSL is a locking screw clamp capable of handling a steel plate from horizontal to vertical to horizontal through a 180-degree arc. It is a lightweight clamp primarily used for bench work. It is capable of handling up to a 2,000-pound load. The MODEL SCSL incorporates a spring loaded swivel jaw and screw cup. The spring loaded screw cup serves as an indicator when the locking screw has been properly tightened.
MODEL SCSL EXPLODED VIEW
SCSL Clamp
Locking, Screw Type
Model SCSM
The MODEL SCSM is a locking screw clamp capable of handling a steel plate from horizontal to vertical to horizontal through a 180-degree arc. It is a lightweight clamp primarily used for bench work. It is capable of handling up to a 2,000-pound load.
MODEL SCSM EXPLODED VIEW
TLA Clamp
Locking Type
Model TLA
The Model TLA is a vertical lifting clamp incorporating a “Lock Open” and a “Lock Closed” feature and an auxiliary push button lock. The clamp is capable of turning a steel plate from horizontal to vertical to horizontal through a 180 degree arc. The “Lock Open,” “Lock Closed” feature facilitates attaching and removing the clamp from the plate.
MODEL TLA EXPLODED VIEW
JPA Clamp
Locking Type
Model JPA
The Model JPA is a vertical lifting clamp capable of turning a single plate or member from horizontal to vertical to horizontal through a 180 degree arc. Incorporates a push button auxiliary lock. Permits side loading of lifting shackle to 90 degrees by derating of clamp’s rated capacity. Refer to FIGURE 1 for derated capacities.
Model JPA incorporates a pivoting shackle that permits side loading of the lifting shackle at 100 percent of rated capacity from vertical to 30 degrees, 75 percent of rated capacity between 30 and 45 degrees and 50 percent of rated capacity between 45 and 90 degrees.
MODEL JPA EXPLODED VIEW
LPA Clamp
Model LPA
Renfroe’s Model LPA is an ergonomic vertical lifting clamp capable of turning a single plate or member from horizontal to vertical to horizontal through a 180 degree arc. It incorporates an auxiliary lock. Permits side loading of lifting shackle to 90 degrees by de-rating of clamp’s capacity. Refer to FIGURE 1 for de-rated capacities. The “Lock Open – Lock Closed” feature facilitates attaching and removing the clamp from the plate.
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The Model LPA incorporates a pivoting shackle that permits side loading of the lifting shackle at 100% of the rated capacity from vertical to 30 degrees, and 50% of rated capacity between 30 and 45 degrees, and 50% of rated capacity between 45 and 90 degrees.
MODEL LPA EXPLODED VIEW
SCPA Clamp
Locking, Screw Type
Model SCPA
The SCPA clamp is capable of handling steel plate from horizontal to vertical to horizontal through a 180 degree arc and may be used for handling plate at rolling and forming machines. These clamps feature a spring loaded pivoting cam jaw that "cams in" when a load is applied to the lifting shackle. Clamp is capable of handling plate horizontally when used in pairs or sets of pairs, or in a tripod arrangement.
*Pivoting shackle assembly, as shown, is available on capacities 3 tons and larger.
MODEL SCPA EXPLODED VIEW
The reliability of a Renfroe clamp has made the Renfroe line a preferred clamp by shipbuilders all over the world. J.C. Renfroe & sons began in the Jacksonville, Florida shipyards over 70 years ago and has continuously supplied shipbuilders with speciality clamps designed specifically for shipyards needs. And with Renfroe's in-house engineering department, we can design and manufacture new clamp products to handle your yards unique lifting applications
AST Clamp
Non-Locking Type
Model AST
Both the Model AST and ASTL were developed primarily for lifting, turning and stacking lightweight beams and structural shapes while a constant tension is applied to the lifting shackle. The horizontal shackle permits a beam to be lifted with the web in a near horizontal position by placing the clamp on the load with the shackle positioned over the web, and between the flanges. With a beam lying in a horizontal position, and the clamp placed with the shackle overhanging the flange, the beam can be lifted, turned 90 degrees, and raised in a vertical position.
MODEL AST EXPLODED VIEW
ASTL Clamp
Non-Locking Type
Model ASTL
Both the Model AST and ASTL were developed primarily for lifting, turning and stacking lightweight beams and structural shapes while a constant tension is applied to the lifting shackle. The horizontal shackle permits a beam to be lifted with the web in a near horizontal position by placing the clamp on the load with the shackle positioned over the web, and between the flanges. With a beam lying in a horizontal position, and the clamp placed with the shackle overhanging the flange, the beam can be lifted, turned 90 degrees, and raised in a vertical position.
The Model ASTL includes all of the feature of the Model AST plus a linkage which permits the tool to be removed remotely by setting the load down with the sling slack, then lifting the crane hook.
MODEL ASTL EXPLODED VIEW
AST-S Clamp
Locking Type
Model AST-S
The Model ASTS is the same as the Model AST with the exception that it incorporates a “Lock Closed” feature which facilitates attaching to the beam. Developed primarily for lifting, turning and stacking lightweight beams and structural shapes. The horizontal shackle permits a beam to be lifted with the web in a near horizontal position by placing the clamp on the load with the shackle positioned over the web, and between the flanges. With a beam lying in a horizontal position, and the clamp placed with the shackle over-hanging the flange, the beam can be lifted, turned 90 degrees, and raised in a vertical position.
MODEL AST-S EXPLODED VIEW
DG Clamp
Locking Type
Model DG
The Model DG rail clamp is used for lifting and transporting crane rails and railroad rails. Lightness of weight allows it to be hand applied and hand removed. The Model DG possesses all the features of the Model FR. All the repair parts are identical to same tonnage of the FR, except the swivel jaw has
been eliminated.
MODEL DG EXPLODED VIEW
M Clamp
Locking Type
Model M
The Model M is a multipurpose clamp used for positioning, sorting, erection and handling of prefabricated sections. The split lower jaw enables the clamp to be particularly useful in handling structural shapes. The Model M incorporates a "Lock Closed" feature which facilitates attaching the clamp to the member being lifted. These clamps must be used in pairs, sets of pairs, or in a tripod arrangement for transporting plate horizontally. Handle is available on 8 ton clamp only.
MODEL M EXPLODED VIEW
SEA Clamp
Locking Type
Model SEA
The Model SEA is a clamp used primarily for erection of structural beams. Configuration of the lower hook assembly and the over center position of the shackle permits a clamp to grip closer to the beam web, stabilizing the load and holding it with the web near horizontal for easy alignment of bolt holes.
The clamp incorporates a "Lock Open" and "Lock Closed" feature which facilitates in attaching and removing the clamp from the beam.
MODEL SEA EXPLODED VIEW
SX Clamp
Locking Type
Model SX
The Model SX clamp is used for lifting and transporting of angles both in fabrication and erection of steel. It possesses all the features of the Model S. All repair parts are identical to the same tonnage Model S parts.
MODEL SX EXPLODED VIEW
DWS Clamp
Locking Type
Model DWS
Model DWS is a horizontal lifting clamp utilizing Renfroe’s famous “lock-closed” feature. This clamp comes in four sizes:
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1/4 Ton: 0 – 1/2" opening
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1/2 Ton: 0 – 3/4" opening
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1-1/2 Ton: 0 – 1" opening
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3 Ton: 0 – 1-1/4" opening
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Recommended for use in pairs.
MODEL DWS EXPLODED VIEW
HR Clamp
Non-Locking Type
Model HR
The Model HR is a horizontal lifting clamp intended to be used in pairs, sets of pairs, or in a tripod arrangement for transporting steel plates horizontally-.
Equipped with serrated gripping cams as standard equipment, both the HR and HDR models are available with smooth, bronze or stainless steel gripping cams to prevent marring when handling polished metals such as stainless steel, copper, aluminum, etc.
MODEL HR EXPLODED VIEW
HDR Clamp
Non-Locking Type
Model HDR
The Model HDR is a horizontal lifting clamp intended to be used in pairs, sets of pairs, or in a tripod arrangement for transporting steel plates horizontally. The Model HDR is similar to the Model HR except that it contains dual cam assemblies which provide two gripping surfaces.
Equipped with serrated gripping cams as standard equipment, both the HR and HDR models are available with smooth, bronze or stainless steel gripping cams to prevent marring when handling polished metals such as stainless steel, copper, aluminum, etc.
MODEL HDR EXPLODED VIEW
HRS Clamp
Locking Type
Model HRS
The Model HRS is a horizontal lifting clamp that has a spring loaded open and closed position. The spring closed position allows one-man operation of multiple clamps. The clamps stay in position where they’re attached until spring open is actuated.
These clamps must be used in pairs, sets of pairs,
or in a tripod arrangement for transporting plate
horizontally.
MODEL HRS EXPLODED VIEW
M Clamp
Locking Type
Model M
The Model M is shown with the structural shape lifting clamps but can also be used for horizontal lifting of plates and structural beams. The Model M incorporates a “Lock Closed” feature which facilities attaching the clamp to the member being lifted. These clamps must be used in pairs, sets of pairs, or in a tripod arrangement for transporting plate horizontally. Handle is available on 8 ton clamp only.
MODEL M EXPLODED VIEW
WHSR Clamp
Non-Locking Type
Model WHSR
The Model WHSR is an adjustable, horizontal clamp intended to be used in pairs, sets of pairs, or in a tripod arrangement for transporting steel plates horizontally. In addition to incorporating two gripping cams, the jaw opening may be adjusted by the positioning of a pin in the body of the clamp. The gripping cams are spring loaded to remain in the "open" position until the load is applied. This feature permits the clamp to be easily applied and removed from the load. Normally furnished with serrated gripping surfaces, it is available with smooth faced bronze or stainless steel surfaces to prevent marring when handling polished plates.
MODEL WHSR EXPLODED VIEW
A-1 Clamp
Locking Type
Model A-1
The Model A-1 is a portable beam clamp that provides easy suspension of hoists, from channels or angles thereby eliminating the need for nuts, bolts, shackles and so on. The Model A-1 is designed for use on channel or angle shapes only. This model is furnished with a fluted tool steel locking wedge which holds the clamp in place on channels or angles.
MODEL A-1 EXPLODED VIEW
AC Clamp
Locking, Screw Type
Model AC
These clamps may be used for Drifting Loads when used in pairs or multiples.
The Models AC and ACP are light weight, portable clamps that provide quick easy attachment to structural members for the use of chain falls, hoists and wire rope pullers. These clamps are of single unit construction with a quick acting hand screw to secure the clamp.
The Model AC has a fixed Shackle Eye. These clamps are specially useful in the construction and maintenance for shipbuilding and other industries.
MODEL AC EXPLODED VIEW
ACP Clamp
Locking, Screw Type
Model ACP
These clamps may be used for Drifting Loads when used in pairs or multiples.
The Models AC and ACP are light weight, portable clamps that provide quick easy attachment to structural members for the use of chain falls, hoists and wire rope pullers. These clamps are of single unit construction with a quick acting hand screw to secure the clamp.
The Model ACP has a Pivoting Shackle Eye. These clamps are especially useful in the construction and maintenance for shipbuilding and other industries.
MODEL ACP EXPLODED VIEW
B-1 Clamp
Locking Type
Model B-1
The Model B-1 is a portable beam clamp that provides easy suspension of hoists from beams or girders thereby eliminating the need for nuts, bolts, shackles and so on. The Model B-1 is intended for use on the American standard or wide flange beams. This model is furnished with a fluted tool steel locking wedge which holds the clamp in place on a beam.
MODEL B-1 EXPLODED VIEW
B-2 Clamp
Trolley Clamp
Model B-2
MODEL B-2 EXPLODED VIEW
BC Clamp
Locking Type
Model BC
The Model BC is a multi-purpose beam clamp suitable for both lifting beams or providing suspension of hoists from beams or girders, thereby eliminating the need for nuts, bolts and shackles. It is intended for use on the American standard or wide flange beams.
MODEL BC EXPLODED VIEW
OPTION: Now available with soft jaw inserts. Factory installed at time of order or as a Retrofit Kit for customer installation
PB Clamp
Locking Type
Model PB
The Model PB is similar to the Model B-1 and provides quick attachment to beams and girders and may be used in the general rigging of chain falls and hoists. The clamp hinges in two sections allowing quick installation. This model is furnished with a fluted tool steel locking wedge which holds the clamp in place on a beam. The two eyes allow the clamp to be attached in the vertical or horizontal positions. The clamp is of single unit construction and fits a wide range of flange widths.
MODEL PB EXPLODED VIEW
PC Clamp
Locking, Screw Type
Model PC
Eliminate expensive pad eyes with the Model PC... a light "pull clamp" used for pulling and aligning structural members and fabricated sections in the construction and maintenance for shipbuilding and other industries. These clamps are versatile and have a wide range jaw opening. They are secured to the load by tightening the screw and have a rotating cam jaw grip on the screw and clamp body.
MODEL PC EXPLODED VIEW
NM Clamp
Locking, Screw Type
Model NM
The Model NM clamp (non-marring) is manufactured with smooth gripping surfaces to prevent marring when gripping stainless steel, copper, aluminum and other polished metal plates. Due to the variety of conditions that may exist in handling these plates, it is recommended that these clamps be used in pairs and attached to a chain or wire rope sling, supported by a spreader beam. The Model NM is supplied with stainless steel gripping surfaces and is available with steel or bronze upon request. The model NM is not intended for use in transportation of plates using mobile equipment where shocking of the load may occur.
MODEL NM EXPLODED VIEW
NMA Clamp
Locking Type
Model NMA
Renfroe Model NMA is a non-marring clamp with smooth gripping pads that can lift hard surface materials. Materials with sensitive finishes such as stainless steel, copper, aluminum and polished metal plates can also be lifted. The clamp incorporates a locking feature which enables the clamps gripping jaws to be "Locked Open" for attaching and removing material being lifted and to be "Locked Closed" for turning material through 180 degrees. It is recommended these clamps be used in pairs.
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MODEL NMA EXPLODED VIEW
NMBL Clamp
Locking Type
Model NMBL
The NMBL model is used to turn plates from the horizontal through a 180 degree arc. It is manufactured with smooth gripping surfaces to prevent marring when gripping stainless steel, copper, aluminum and other polished metal plates. The NMBL incorporates a lock open – lock closed feature to facilitate attaching and removing the clamp from the plate.
MODEL NMBL EXPLODED VIEW
NMRSC Clamp
Locking, Screw Type
Model NMRSC
The Model NMRSC is a lightweight screw clamp for bench work on steel plates of large thickness, and weighing less than 1000 lbs. Supplied with smooth gripping surfaces to prevent marring when gripping stainless steel, copper, aluminum and other polished metal plates.
MODEL NMRSC EXPLODED VIEW
300-S Clamp
Locking Type
Model 300-S
The Model 300-S is used for vertical lifting and transporting of metal drums. Equipped with a past center locking device which secures the clamp tightly to the drum. The Model 300-S is capable of handling one drum at a time.
MODEL 300-S EXPLODED VIEW
400-M Clamp
Locking Type
Model 400-M
The Model 400-M is used for vertical lifting and transporting of metal drums. Equipped with a past center locking device which secures the clamp tightly to the drum. The Model 400-M is capable of handling four drums.
MODEL 400-M EXPLODED VIEW
Tagline Clamp
Tool
Tagline
The Tagline is a tool to which a load-guiding lanyard is attached to assist in controlling the swing of a load during transport and to aid in aligning the load before it is brought to rest.
MODEL A-1 EXPLODED VIEW
Pry Tool
Tool
Pry Bar
With this amazing simple tool you can prepare plates in stacks easily, quickly and carefully for clamp attachment. The function of the bar includes…
1 The exact guidance of both bars sliding into each other to ensure a safe application at the point of contact.
2 Through a few powerful blows of the double bar handle, the wedge is pushed between the metal plates.
3 When the bar is extended, leverage makes it possible to lift even heavy plates to cover the length of the wedge.
4. In this position lifting equipment like Renfroe clamps can easily be applied for lifting
MODEL PRY BAR EXPLODED VIEW
Factory Refurbish and
Recertification
of Renfroe
Clamp’s
ASME B30.20 recommends specific inspections of “Below the Hook” Lifting devices.
ASME B30.20 Section 20-1.3 lists inspection classifications for inspection, testing and maintenance of structural and mechanical lifting devices.
Replacement parts and Renfroe Rebuild Kits are available for customer’s to refurbish their Renfroe clamps. If, however, you are not comfortable with performing this service for your customer, then J. C. Renfroe and Sons can provide this service.
A simple phone call to our customer service department will start the process. We will issue an RGA number to send the clamp(s) to us. Once received, we will inspect it/them and issue a quote for services required to put the clamp(s) into “as new” condition. If requested, we will provide a certificate of proof test.
SAFETY OPERATING AIDS
(DO’s and DON’TS )
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DO read and understand the operator’s manual before using clamp.
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DO consult Operators Manual or RENFROE when in doubt.
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DON”T lift over workmen. DON”T lift over safety areas or personnel.
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DO attend a factory training class for establishing proper use of Renfroe Products.
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DO Lock clamp closed when clamps are fitted with a lock. DON”T lift with lock in open or “lock open” position.
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DON”T use a connection that may release the clamp.
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DON”T attach clamp directly to crane hook. DO use a flexible connection between crane hook and clamp shackle. DON”T use heavy flexible connection.
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DO use correct clamp for job. DON”T use large capacity clamps to lift light loads.
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DO use an adequate number of clamps to balance load. DON”T lift loads that are not balanced.
Safety Operating Aids
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​DO use clamps within their rated capacity.
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DON’T overload clamps.
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DO inspect clamp before each lift, follow inspection and maintenance instructions outlined in the manual and use RENFROE replacement parts to assure proper operation of the clamp.
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DON’T use clamp that has been overloaded. DO
refer to pre-lift inspection in Operator’s Manual.
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DON’T side load with a straight shackle clamp.
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DON’T misuse. DON’T lift plate from bottom of plate stack.
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DON’T rush. DON’T lift more than one plate at a time with a vertical clamp.
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DON’T improvise. Always use correct clamp for the job. DON’T lift plate horizontally with a vertical lift only clamp.
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DON’T alter clamp. DON’T grind, weld or modify the clamp in any manner.
NOTICE OF EXCLUSION OF WARRANTY
RENFROE HAS HEREIN SET FORTH IN CONSPICUOUS LANGUAGE AN EXCLUSION OF ANY
WARRANTY EITHER EXPRESSED OR IMPLIED, WHICH IS NOT SPECIFICALLY AND PARTICULARLY
CONTAINED HEREIN. PLEASE REFER TO THAT STATEMENT FOR REPRESENTATIONS AND
WARRANTIES OF PRODUCTS MANUFACTURED BY J.C. RENFROE & SONS.
DEFINITIONS
VERTICAL LIFT: The lifting of a single plate or member in which the lifting force exerted by the rigging is directly above and in line with the lifting shackle as shown in the
illustration below.
DEFINITIONS
VERTICAL TURN/LIFT: A vertical turn/lift clamp is a vertical lifting clamp specifically intended to turn a single plate or member thru a ninety degree (90°) arc and back to vertical thru the same ninety degree (90°) arc or from horizontal to vertical to horizontal thru a one hundred and eighty degree (180°) arc. Refer to Application Section of specific Turn/Lift clamps for further detail.
During the turning operation the edge of the plate opposite the edge to which the clamp is attached should always be in contact with a supporting surface such as a factory floor and the load on the clamp should not exceed one half rated capacity of clamp — refer to illustrations shown below.
HORIZONTAL LIFT: Clamps (used in pairs or multiples) are attached to the side edges of a plate or bundle of plates positioned horizontally to the floor level. The rigging attached to clamps is generally multi-legged slings with the connecting point of the slings being approximately centered between the distance separating the clamps. Refer to illustrations shown below.
WARNING: The capacity of all horizontal clamps is based on a sling angle of sixty degrees (60°). See illustration below. Sling angles less than sixty degrees (60°) increase the load exerted on the clamps. Sling angles greater than 60° reduce gripping force, do not exceed 60°.
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STEEL PLATES: Unless otherwise specified, lifting clamps are manufactured to handle hot-rolled steel plates whose Brinell Hardness does not exceed 300.
WARNING: Do not lift plates with coatings or mill scale that prevent the gripping surfaces of the clamp from making positive contact with the base metal.
For applications not covered by the above information, secure written recommendations from RENFROE.
FINISHED AND POLISHED PLATES: Steel plates in this category having other than hot-rolled surfaces such as stainless steel, etc., are generally handled using non-marring clamps incorporating smooth gripping surfaces.
WARNING: For applications using clamps with serrated gripping surfaces on finished or polished plates, secure written recommendations from RENFROE.
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STRUCTURAL MEMBERS —FABRICATED SECTIONS: Unless otherwise specified, clamps described as capable of handling structural members and fabricated sections are limited to hot-rolled steel whose Brinell Hardness does not exceed 300.
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WARNING: For applications not covered by the above information, secure written recommendations from RENFROE.
RATED CAPACITY: ALL RENFROE CLAMPS
ARE RATED INDIVIDUALLY. The rated capacity of a RENFROE product is based on the product being in “new or as new” condition and represents the maximum load the product is to be subjected to when utilized in the manner described in this manual. Wear, misuse, abuse and other factors relating to usage may reduce the rated capacity. Shock loading and the factors listed must be taken into consideration when selecting a RENFROE product for a given application.
PLATE THICKNESS: The minimum and maximum plate thickness a clamp specified for handling plates is
capable of lifting.
DEFINITIONS
WARNING: Never use a clamp for lifting a plate where the plate thickness is less than or greater than the minimum and maximum stenciled on the clamp.
JAW OPENING: The minimum and maximum thickness of a member of a clamp specified as having a JAW OPENING is capable of handling.
WARNING: Never use a clamp on a member whose thickness is less than or greater than the range of jaw opening stenciled on the clamp.
OPERATING TEMPERATURES: Unless specified under the Applications Section of the individual model, the approved operating temperature of RENFROE clamps is from zero degrees Fahrenheit (-18 Celsius) to a maximum of 200 degrees Fahrenheit (+93 degrees Celsius). The minimum and maximum temperatures apply to both ambient and the material being handled by the clamp.
WARNING: Secure written authorization from RENFROE before using clamps in temperatures other than shown.
“HOT LIFTS”: The Model R and S clamps are available in modifications that are capable of making lifts where the temperatures of the member being lifted exceeds 200 degrees Fahrenheit (+93 degrees Celsius). Depending on
conditions, a lift may exceed 1000 degrees Fahrenheit (538 degrees Celsius). The exact application and temperatures of the plates to be handled are critical in selecting the proper model.
WARNING: Secure written instructions from RENFROE for all hot lift applications.
LOCKING CLAMPS: Locking clamps are divided into the categories listed below. With the exception of the “Locking Wedge” and “Locking Screw” type the purpose of the locks are to facilitate the attaching and removing of the clamp from the member being handled.
“Lock Closed” — an over center spring loaded. mechanism in which the spring exerts a force on the gripping cam when the lock handle is moved to the “Lock Closed” position. When the handle is moved to unlocked position, the force exerted by the spring is relaxed and the gripping cam may be retracted by pushing the lifting shackle into the body of clamp. Refer to the Operation Section of specific models of “Lock Closed” clamps for additional details. Typical “Lock Closed” clamps are Models DG, FR, M and HRS.
“Lock Open Only” — normally used on “Hot Lift” clamps and consists of a manually operated “Lock Stop Pin” that is inserted when gripping cam of clamp is retracted and removed when clamp is positioned on the plate. Tag line may be used to permit operator to remove pin from a greater distance from clamp. Refer to the Operation section of specific model of “Lock Open Only” clamps for additional details. Typical “Lock Open Only” clamp is the Model RO.
“Lock Open-Lock Closed” — an over-center spring loaded mechanism in which the spring exerts a force on the gripping cam when the lock handle is moved to the “Lock Closed” position. When the handle is moved to the “Lock Open” the gripping cam is maintained in the retracted position for ease in installing the clamp on a plate or member. The Model FRD contains individual “Lock Open” and “Lock Closed” mechanisms that must be operated separately. Refer to the Operation section of specific models of the “Lock Open-Lock Closed” clamps for additional details. Typical “Lock Open-Lock Closed”
clamps are Models FRD, R, S, SD, SEA, SX, TL, TLA and the J-Series.
“Locking Wedge” — is a fluted steel wedge that is driven in place with a hammer. The body of the wedge is positioned in a slot in the clamp body with the fluted edges contacting the member to which the clamp is being attached. Refer to Operation Section of specific models of the “Locking Wedge” clamps for additional details. Typical “Locking Wedge” clamps are Models A1, B1, B2
and PB.
“Locking Screw” — “Locking Screw” clamps depend on manually adjusting a screw to hold the gripping surface in place for lifting and removing the clamp from member being lifted. Refer to Operation Section of a specific model of “Locking Screw” clamps for additional details. Typical “Locking Screw” clamps are Models AC, ACP, BC, NM, PC, SCP, SCPA and RSC.
NON-LOCKING: “Non-Locking” clamps have no mechanisms to aid in attaching or removing clamp from member being lifted. It is necessary to have position of clamp maintained on the member being lifted until a properly applied force is exerted to the lifting shackle. Refer to Operation Section of specific models of the “Non-Locking” clamps for additional details. Typical “Non-Locking” clamps are Models AST, ASTL, BD, HR, HDR , HRS and WHSR.
WARNING: A POINTING OUT AND NOTICE OF DANGER. THE PURPOSE OF A “WARNING” IS TO APPRISE THE OPERATOR AND ALL OTHER AFFECTED PERSONS OF THE EXISTENCE OF DANGER OF WHICH HE SHOULD BE, BUT MAY NOT BE AWARE; AND TO ENABLE THE OPERATOR TO PROTECT HIMSELF AND OTHERS, WHERE APPLICABLE, AGAINST SUCH DANGER. AN ATTEMPT IS MADE HEREIN TO WARN AGAINST REASONABLE AND REASONABLY FORESEEABLE DANGER IN THE PROPER USE AND POSSIBLE REASONABLE MISUSE OF RENFROE PRODUCTS DESCRIBED IN THIS CATALOG.
No operator should engage or attempt to engage in the use of any Renfroe product until the applicable manual has been read and fully understood.
Failure to review and utilize recommended applications, operating and maintenance instructions could result in serious injury to the operator and others. An Application, Operation and Maintenance Manual is packaged with each Renfroe product. Additional copies
are available by contacting us directly
The construction of RENFROE products permits the installation of repair parts to be accomplished by qualified personnel utilizing recommended procedures for inspection and installation of each product model as recommended in the Maintenance Section of the Operator’s Manuals.
When necessary, the worn or damaged parts may be replaced by installing individual replacement parts or through the use of a RENFROE Rebuild Kit which includes all parts generally replaced due to normal wear. Parts not subjected to daily operating wear are not included in the Rebuild Kit and may be purchased separately.
General Information
GENERAL INFORMATION
IMPORTANT: Information contained in this catalogue is for the presentation of pertinent illustrative and specification data for use in the selection of suitable RENFROE® products consistent with the use intended by RENFROE. Refer to Operator’s Manuals for information on application, operation and maintenance of each particular model or product.
Photographs of products shown in this catalogue which may include examples of applications are for illustrative
purposes only. Please refer to the Operator’s Manuals for approved applications of RENFROE products.
OPERATOR’S MANUALS: PRIOR TO PURCHASE AND/OR USE OF ANY RENFROE PRODUCT, EACH PURCHASER AND OPERATOR SHOULD READ AND UNDERSTAND FULLY ALL OF THE PERTINENT INSTRUCTIONS AND RECOMMENDATIONS CONTAINED IN THE OPERATOR’S MANUALS FOR THE PARTICULAR PRODUCT INVOLVED.
THE OPERATOR’S MANUAL:
Manuals contain recommended application, operation and maintenance instructions for all RENFROE products listed in this catalogue. A copy of the Operator’s Manual pertaining to each such product is attached to the product
or enclosed within the shipping carton with each product. In addition, Operator’s Manuals may be obtained from authorized RENFROE Distributors or by contacting us directly
TRAINING AIDS: RENFROE provides upon request and at no charge posters, inspection kits containing coded inspection tags, and maintenance inspection record forms.
RENFROE factory representatives are also available upon
request to assist with training end-users in the proper
use, maintenance, and inspection of RENFROE products.
General Information
INSPECTION AND REBUILD: RENFROE Factory Representatives are available upon request to inspect RENFROE products in use at Plant sites or such other reasonable locations where such products are in use. RENFROE products may be returned to the factory for inspection and rebuild in accordance with an established
fee schedule. Neither operators nor maintenance personnel of the user of such products should engage in any modification of any RENFROE product for any reason.
Installation of parts and Rebuild Kits should be effected only in accordance with instructions included within the
Operator’s Manual and as furnished with each RENFROE
Rebuild Kit.
ENGINEERING SERVICE: Our Engineering Department is ready to assist in the solution of special problems and its service is available at all times to our customers.
DELAYS: J. C. RENFROE & SONS is not liable for any delays in manufacturing or shipping caused by fire, strikes, lockouts, war, insurrections, inability to secure materials, government interference or regulations, delays in transportation, or other circumstances beyond reasonable control.
EXCLUSION OF WARRANTY
THERE EXISTS NO WARRANTIES NEITHER EXPRESSED NOR IMPLIED WHICH EXTEND BEYOND THE DESCRIPTIONS OR
STATEMENTS CONTAINED IN THE FACE OR ANY PART HEREOF.
KITS ARE AVAILABLE FOR THE FOLLOWING MODELS:
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Vertical Clamps
• Model FR
• Model J
• Model JP
• Model JA
• Model JPA
Stainless Steel Gripping Surfaces
Horizontal Clamps
• Model HR
• Model HDR
• Model M
• Model WHSR
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• Model LJ
• Model SCP
• Model SCPA
• Model TL
• Model TLA
J.C. Renfroe offers a full line of quality, dependable bridge and mobile crane blocks.
What raises Renfroe above the competition is out in-house engineering staff that thinks outside the blocks. At Renfroe, we can work with you to develop unique designs and custom specifications to produce blocks for any project. OEM's can work directly with our engineers in the design and manufacture of blocks to accommodate specific applications. Over the past 75 year, we have built our business on customizing products ranging from lifting clamps to sheaves. So, we can "knock off" a block for you too
Renfroe Sheaves
Renfroe Sheaves
Model “M” (Machined Sheave) – 3 inches up to 24 inches (Made in USA)
Available In Imperial And Metric Wire Rope Sizes
Renfroe Advantages:
-
Flexibility in our manufacturing process means we can produce a single sheave without a considerable cost impact.
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Flexibility = Better Lead Time
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Induction groove hardening available.
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Technology, manufacturing flexibility, quality and dependability – all of these features are standard in every J.C. Renfroe product.
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Because of our technology and manufacturing flexibility, we can produce special configurations (dimensions) without the long lead times and without increased costs associated with standard manufacturing techniques.
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Proven technology (worldwide).
Sheave Sizes Available From J.C. Renfroe
Wire Rope To Sheave
Dimensions
Wire Rope To Sheave Dimensions
Above information is needed in order for us
to be able to manufacture a sheave for you.
If Bushings or Bearings are needed, please contact your distributor or the Renfroe factory and provide specific information. If you want us to quote and/or provide bearings, you must give us the bearing manufacturer name, and part numbers.
Wire Rope To Sheave Dimensions
Wire Rope To Sheave Dimensions
Standard Sheaves With Dimensions (Machine Made)
DIMENSIONS OF SHEAVES
Standard Sheaves With Dimensions (Machine Made)
Model S Synthetic Sheaves
MDS Cast Nylon 6
(Other Materials Available)
Features and Benefits
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Lighter than Steel Sheaves
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Good Rigidity and Hardness
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High Impact Value
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Corrosion Resistant
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Low to No Moisture Absorption
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Good Resistance to Chemicals
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Dimensionally Stable
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Wide Variety of Dimensions Available
Applications
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Overhead Traveling Bridge Cranes
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Mobile Cranes
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Port Cranes
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Offshore Cranes and Platforms
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Conveyor Systems
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And Many More
Sales Policy & Sheave Definitions
Bearing Policy
Please contact the Renfroe Plant for spec ordering of bearings.
Please contact us directly for our Sales policy.
Sales Policy
Sales Policy
Commercial Surface Quality – the surface condition associated with the normal methods of production of raw materials and machined surfaces.
Design Factor – a measure of the theoretical reserve capacity, which is determined by dividing the ultimate load by the working load limit.
Proof Load – the average force to which a product is subjected before deformation occurs.
Proof Test – a test conducted on a product to determine injurious material or manufacturing defects.
Shock Load – a force that results from the rapid application of a force or a rapid movement of a static load.
Static Load – the load resulting from a constant applied force or load.
Ultimate Load – the average load or force at which a product fails or no longer supports the load.
Working Load – the maximum mass or force for which the product is authorized to support in a particular service.
Working Load Limit (also known as WLL, Rated Load Value and Resultant) – the maximum mass or force for which the product is authorized to support in general service when the pull is applied with respect to the centerpiece of the product.
Sheave Inquiry & Order Form
Sheave Inquiry & Order Form
Renfroe Sheaves
Instructions
For Installation,
Operations And
Maintenance
Sheave Installation, Operation & Maintenance
General:
These instructions are applicable to wire rope sheaves and hook blocks supplied as complete units, either with bearings or bushings.
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Stocking of delivered parts:
Our customers have to make sure that the parts supplied by our firm are stored in a dry and temperate place.
When wire rope sheaves are stored outside, the bearings or bushings and the spaces in the hubs have to be completely filled with grease in order to prevent the formation of condensed water. The lubrication holes, in case of sealed or shielded bearings have to be closed by grease. In cases of
bearings, without seals or shields, please take the necessary precautions, in order to avoid the dirt, the humidity and the other foreign objects between the opened bearings.
The non-machined and primed surfaces should be protected in order to avoid corrosion.
In cases when the wire rope sheaves are already installed in the plant, and if an extended length of time passes between the installation of the assembly and the start of the running, the pulley grooves must be lubricated sufficiently in order to
avoid oxidation.
Installation:
In the case of wire rope sheaves, please check before the installation to assure the diameter of the shaft is in the tolerance range h 6. Then grease the wire rope sheaves making sure that the cavities between the bearings are also completely filled with grease. The grease should be seen exiting the assembly.
Do lubricate the shaft (Mo S2) in order to avoid damage to the shaft and then install the sheave. If several pulleys are assembled consecutively on the same shaft, make sure that there is separation between the bushings, and the bushings are lubricated.
If it is not required in another way, the greasing of the pulley must be done centrally through the shaft by axial and radial holes of lubrication. For correct lubrication, the gap between the bearings in the sheave must be on the center of the hole for lubrication in the shaft. This pertains to all the wire rope sheaves which are equipped with bearings.
In case of wire rope sheaves with bushings, grease and install. Prior to the start of the running, check if the bushings work with a smooth action.
In the case of sheave assemblies, please take special care in not damaging the seals or shields. For the model with cylindrical bearings with lip seals SL04 … PX, the spacer must be designed in such a way that they are situated in front of the seals and they cannot push them when greasing. Please
make sure that the suitable installation is assured.
Concerns for all the wire rope sheaves:
Without calling attention to the type of bearing chosen, re-lubrication of each wire rope sheave must be possible. This is not necessary in the case of bearings with 2 RS seals with charge of permanent grease and if the working conditions permit it.
As general norm, all the bearing assemblies are
only preserved, and must be fully lubricated before
putting into service.
Sheave Installation, Operation & Maintenance
Working and maintenance:
The wire rope sheaves with bearings have to be greased again in maximum intervals of 3-6 months (must be determined by user based on their usage). Please make sure that the old grease is completely eliminated from the bearings. Grease until the fresh
grease appears. Clean the lube fittings before greasing so that no foreign material enters the bearings.
In case of wire rope sheaves with friction bushings, lubricate at least every four weeks.
Lubricants:
Use only grease of high quality with base of saponified lithium, suitable for working temperatures from -20 (C) / -4 (F) degrees to more than +100 (C) / 212 (F) degrees.
For working at low temperature, the grease must be of good quality for a range for less than -40 (C) / -40 (F) degrees to more than +100 (C) / 212 (F) degrees.
Instructions of service and control for cable grooves:
The cable grooves of each sheave must be covered by viscous grease before putting them in service. This condition of greasing must be controlled continuously during the working of the crane. This also implies that all the cables must be greased. In order to protect the cable groove from undue wear, the fleet angle of the cable in working conditions should never exceed 2º.
The movement of the cable must be adjusted in a way that in the start and the end of each operation, any cable sliding, which may cause undue wear of the cables and the cable grooves, should not happen. You must give a good initial tension to the cables in order to avoid the axial and the radial deformation in the cable groove.
The cable grooves must be inspected frequently for wear, (to be determined by user based of severity of service).
Bridge Crane Blocks
Renfroe Blocks
3 Ton to 50 Ton Made in USA
RENFROE SINGLE SHEAVE BRIDGE CRANE BLOCKS
RENFROE TWO SHEAVE BRIDGE CRANE BLOCKS
DIN Hook
DIN Hook Block
DIMENSIONS (mm).
Mobile Crane Blocks
Mobile Crane Block
Available up to 1000 Ton capacity 3 Ton to 50 Ton Made in USA
MOBILE CRANE BLOCK DATA
Mobile Crane Block Data
Mobile Crane Block Data
Mobile Crane Block Data
Block Maintenance And Inspection
Renfroe Blocks
The following are the minimum suggested maintenance practices we recommend based upon normal use.
Product application, environment and use may dictate a more stringent inspection and maintenance program.
Inspect for:
1. Wear on pins, axles, rope grooves, side plates,
bearings, bushings, and fittings. Excessive wear
may be cause to replace parts or remove block
from service.
2. Misalignment or wobble in sheaves.
3. Deformation in side plates, pins, axle fitting
attachment points. Deformation may be cause
to remove block from service.
4. Deformation or corrosion of hook and nut threads.
5. Weld corrosion or weld cracking on welded side
plates.
6. Proper fit, deformation and operation of the
hook latch.
7. Security of nuts, bolts, and other locking methods,
especially after reassembly following a repair or
inspection.
8. Deformation and wear of hook.
Lubrication Schedule:
Lubricate at regular intervals to prevent damage to the bearing. Lubrication intervals are difficult to determine. If plant practice or experience with other applications is not available, consult your lubricant supplier.
Block Inquiry & Order Form
WARNING:
BEFORE PUTTING
TOOL IN SERVICE,
TAKE THE TOOL OR
THIS BOOKLET TO
YOUR IMMEDIATE
SUPERVISOR.
Operator’s Manual
This Operator’s Manual covers the Application, Operation and Maintenance of this RENFROE product. Operator’s Manuals for other current RENFROE products are available upon request.
Block Operator’s Manual
Block Operator’s Manual
THIS PUBLICATION SUPERSEDES ALL PREVIOUSLY PUBLISHED AND/OR DISTRIBUTED INFORMATION BY MANUFACTURER AND/OR ITS DISTRIBUTORS WITH RESPECT TO APPLICABLE RENFROE PRODUCTS AND SUBJECT MATTER DESCRIBED OR CONTAINED HEREIN.
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WARNING:
Prior to selection, operation and/or maintenance of RENFROE products, read and understand the information provided in this manual. The understanding and use of the Definitions are important in determining the limitations and proper application of RENFROE products. Failure to review and utilize recommended
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applications, operation and maintenance instructions may result in serious injury, or death to operator and others.
NOTICE OF EXCLUSION OF WARRANTY
RENFROE HAS HEREIN SET FORTH IN CONSPICUOUS LANGUAGE AN EXCLUSION OF ANY WARRANTY EITHER EXPRESSED OR IMPLIED, WHICH IS NOT SPECIFICALLY
AND PARTICULARLY CONTAINED HEREIN. PLEASE REFER TO THAT STATEMENT FOR REPRESENTATIONS AND WARRANTIES OF PRODUCTS MANUFACTURED BY J.C.
RENFROE & SONS.
CRANE BLOCK AND SHEAVE ASSEMBLY
WARNING, USE & MAINTENANCE INFORMATION
WARNING
Failure to use this product properly could result in injury or death. Read, understand and follow these instructions to insure the proper use, selection and maintenance of this product
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A crane block system should be rigged by a qualified person as defined by ANSI/ASME B.30.
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Instruct workers to keep hands and body away from block sheaves and swivels — and away from "pinch points" where rope touches block parts and or loads.
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Use only genuine Renfroe parts as replacement.
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Read, understand and follow these instructions to select, use and maintain tackle block systems.
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When ordering a Renfroe product, the ultimate responsibility for selecting the correct product lies with the end user since only the end user has the knowledge of the application and the environment in which the product will be used. Read these instructions carefully and completely.
-
NEVER side load a Renfroe product.
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The hook latch must NEVER support the load. Always make sure the hook supports the load.
-
Never use the yielding point of the hook as a “gauge” of it’s capacity.
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NEVER weld on any Renfroe product.
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NEVER modify any Renfroe product.
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Do not immerse standard Renfroe products in water. In the event the stencilling is worn and not legible or the tag containing the model, capacity or other pertinent information is missing, do no not use block until it has been properly labelled. Renfroe will replace the tag at no charge.
MODEL:
Bridge Crane Block
Failure to use this product properly could result in injury or death. Read, understand and follow these instructions to insure the proper use, selection and maintenance of this product.
Application
Renfroe crane block systems are used in a wide range of applications, each of which has specifications and technical requirements that are unique to that application. When ordering a Renfroe product, the ultimate responsibility for selecting the correct product lies with the end user since only the end user has the knowledge of the application and the
environment in which the product will be used. Read these instructions carefully and completely. If you do not understand all words, diagrams, and definitions in this literature contact Renfroe for assistance. Ratings shown in Renfroe literature are based on the products being in a new and unused condition.
Features, Advantages and Benefits of a Renfroe Crane Block
Block Operator’s Manual
Full and total responsibility for inspection, maintenance and the continued use of the product, lies solely with the owner/user. Product application, environment and manner of use may imply a more thorough inspection and maintenance
program is needed. It is the responsibility of the owner/user to assure that all government and industry guidelines are met.
Inspect for:
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Wear on pins, axles, rope grooves, side plates, bearings, bushings and fittings. Excessive wear is cause to replace parts or remove block from service.
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Deformation in side plates, pins, axle fitting attachment points. Deformation is cause to remove block from service.
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Deformation or corrosion of hook and nut threads.
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Weld corrosion or weld cracking.
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Hook latch for proper fit, deformation and operation.
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Security of nuts, bolts and other locking methods, especially after reassembly following a repair or inspection.
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Check for deformation of hook and for wear.
Any hook or fitting with a crack, gouge or distortion should be removed from service immediately.
LUBRICATION SCHEDULE:
Lubricate at regular intervals to prevent damage to the bearing.
Lubrication intervals are difficult to determine. If plant practice or experience with other applications is not available, consult your lubricant supplier.
INSTRUCTIONS FOR INSTALLATION,
WORKING AND MAINTENANCE
General:
The present instructions are applicable to wire pulleys and blocks supplied as complete units, either with bearings or bushings.
WORKING LOAD LIMIT – The maximum force or mass that the product is authorized to support when used within the guidelines of the severity of service rating. The term applies only to static loads held firmly in direct tension.
The working Load Limits of this Renfroe product should never be exceeded regardless of the strength of the wire rope being used.
The Working Load Limits apply only to new products shipped from the factory.
Age, type of service and environmental conditions can subsequently affect these limits, and periodic inspections should be performed to assure the product will perform in accord with existing regulations.
Caution:
Activities such as, but not limited to, pile driving can have adverse effects upon the life of the product.
Inspect your equipment regularly for excessive wear. When using wedge sockets, note that two precautions should be taken.
1. Make sure that a sudden jolt or impact does not dislodge a wedge. When installing wire rope, always pre-load the wedge with wire rope in place. Check frequently to re-tighten or
reposition as necessary.
2. Make allowance for the crimping effect common with all types of wedge sockets. Experience shows that it will reduce the Safe Working Limit of a line by 20 percent.
TERMINOLOGY
STATIC LOAD - The load resulting from a constantly applied force or load.
WORKING LOAD LIMIT – The maximum force or mass that the product is authorized to support when used within the guidelines of the severity of service rating. The term applies only to static loads held firmly in direct tension. Working Load Limit is used interchangeably with the following terms:
• WLL
• Safe Working Load
• SWL
• Resultant Safe Working Load
WLL of the Crane Block System – The WLL of a Renfroe Block applies only to the block. The WLL of a crane block system can be limited by other parts of the system such as the WLL of the
wire rope.
PROOF LOAD – The average load to which a product may be subjected before visible deformation occurs.
PROOF TEST – A test applied to a product solely to determine the manufacturing integrity of the product.
SHOCK LOAD – A significantly increased load factor caused by the sudden shift, jerk or impacting of the load.
ULTIMATE LOAD – The average load or force at which the product fails, or no longer supports the load.
DESIGN FACTOR – A theoretical reserve capability; usually computed by dividing the ultimate load by the working load limit.
SHORT TON – The avoirdupois weight on which Renfroe product capacities are based. Commonly used throughout the United States and Canada, the term implies a weight of 2,000
pounds and differs from the “long ton”, which amounts to 2,240 pounds.
METRIC TON A unit of mass equal to 2,205
pounds.
Block Operator’s Manual
FLEET ANGLE –The fleet angle is the angle formed between the rope running to or from the extreme left or right of the drum and a line drawn from the center of the sheave normal to the axis of the drum. (See Illustration A next page) For optimum efficiency, the angle here should not exceed 1 1/2 degrees for a smooth drum, or 2 degrees for a grooved drum. If the fleet angle is larger than the recommended limits, it can cause bad winding on smooth drums and rubbing against the flanges of the grooves. Too small a fleet angle should also be avoided since it will cause the rope to pile up against the flange head.
BLOCK – A term applied to a wire rope sheave enclosed in side plates and fitted with some attachment such as a hook or shackle.
SHEAVE – A grooved pulley for wire rope.
GROOVES – Depressions – helical or parallel – in the surface of a sheave or drum that are shaped to position and support the rope.
TREAD DIAMETER – The measurement from the deepest point of the sheave groove on one side of the sheave to the deepest point of the sheave groove on the other side (See Illustration B
next page)
PITCH DIAMETER – A true measurement of the bend of the rope around the sheave
WIRE ROPE – A plurality of wire strands helically laid about an axis
DRUM – A cylindrical barrel, either of uniform or tapering diameter, on which rope is wound either for operation or storage; its surface may be smooth or grooved.
HOOK SWIVEL – The platform from which the hook is housed and suspended from the shaft.
Block Operator’s Manual
Sheave Diameter
and its Effect on
Wire Rope Strength.
When wire rope is bent, it’s strength is reduced.
Refer to the chart to determine the effect of bend radius on wire rope strength when selecting a sheave diameter.
Ratio A:
Divide Sheave Dia. by Wire Rope Dia. to find Ratio.
Compare this ratio to the table to determine the strength efficiency of the wire rope.
Example: 10”÷.50” = 20 -> 91% strength
efficiency compared to catalogue strength.
MAINTENANCE AND INSPECTION
Block Operator’s Manual
INSTRUCTIONS FOR SERVICE AND
CONTROL OF SHEAVE GROOVES:
The sheave grooves of each sheave must be covered by grease before putting them into service. This condition of greasing must be controlled continuously during the working of the crane. This also implies that all the wire ropes must be greased. In order to protect the sheave groove from undue wear, be sure not to allow the fleet
angle to exceed 2 degrees.
The working of the wire rope must be fitted in a way that in the start and the end of each operation, any rope sliding which may cause undue wear of the rope and the sheaves does not happen. You must give a good initial tension to the ropes in order to avoid the axial and the radial deformation in the sheave groove.
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In case you find excessive wear, the sheave must be replaced by a new one.
In case of sheaves assembled horizontally, there are holes placed in the cover assemblies. These holes must be cleaned every 3 months in order to avoid water collection in the concavity of these sheaves.
EXCLUSION OF
WARRANTY
Block Operator’s Manual
THERE EXISTS NO
WARRANTIES NEITHER
EXPRESSED NOR IMPLIED
WHICH EXTEND BEYOND
THE DESCRIPTIONS OR
STATEMENTS CONTAINED
IN THE FACE OR ANY PART
HEREOF.
Now you can watch your weight with the new weighing hook block that displays to the nearest pound what you're lifting, carrying or weighing. Reassuring? Certainly. Renfroe? Obviously.
And you can be assured our weighing blocks feature the same quality, dependability and proof testing as all of our Renfroe products.
Accuracy is within 0.1% of the actual load weight
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Failure of a load cell doesn't make the load all
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Large digital display
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Possibility of transmission of weight via radio to a remote display, a computer or to a printer
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Available for any capacity from 1 ton to 300 tons
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No height loss
LOAD WEIGHING
& MOTORIZED ROTATION
CRANE BLOCKS
FOR BRIDGE CRANES
Load Weighing & Crane Blocks
1 SHEAVE STANDARD
4 SHEAVE 55 TON
4 SHEAVE MOTORIZED
2 SHEAVE STANDARD
2 SHEAVE SPECIAL
4 SHEAVE SPECIAL
4 SHEAVE STANDARD
6 SHEAVE MOTORIZED
ROTATION
For Foundry Application
Weight Transmitted via
Radio Signal to Remote
Display
Fast, accurate weight readings are essential requirements in order for buyers to be assured they are receiving what they ordered. Shippers can verify they are shipping the correct amount of product to their customers to avoid over or under weight shipments. Also you can control material flow within your facility.
Available In Capacities 1 Ton to 300 Ton
The Weighing Block has the same configuration as a conventional Bridge Crane Block, but it incorporates a highly reliable load cell with a precision of +/- 0.1%. It has a digital display 1” (26mm) tall for easy reading at a distance. It can
be supplied with a larger display 1 3/4” or 2 3/8” (45mm/ 60 mm) or a larger 5” (130mm) digital display mounted on the crane within a 300 ft. radius.
Advantages:
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Direct reading of the load weight, avoiding repeated trips to centrally located scales.
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No head room loss. Compact unit.
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Totally independent of crane system.
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Precise load weighing, +/- 0.1% accurate.
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Electronic components are protected.
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A failure of the load cell does not release the load, and does not affect the normal operation of the block.
• Automatic weighing system.
• Robust design, built for safety.
Standard:
• Interior use, normal environment.
• Digital screen 1, 1 3/4 or 2 3/8 inch (26, 45 or
60mm) depending on block size.
• Remote control for functions (ON/OFF, TARE).
• TARE 100% of nominal load.
• Totally independent, powered by batteries.
• Separate battery charger (supplied only with
units that have interchangeable batteries).
• 24 hour battery life for display.
• Indicator for low battery charge.
Optional:
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Interior use, severe environment, foundry or corrosive atmosphere.
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Heavy/continuous duty rating.
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Remote readout, wired or radio.
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Radio connection to computer or printer.
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ask memory.
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Continuous 110, 220 or 380V AC power supplied by cable reel.
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Maximum tension indicator.
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Replace that old Bridge Crane Block with a new Load Weighing Block. Work Safer, Know Your Exact Load.
Block Operator’s Manual
RENFROE LOAD WEIGHING BLOCK
SINGLE SHEAVE
Renfroe Load Weighing Block
RENFROE LOAD WEIGHING BLOCK
2 SHEAVE
Renfroe Load Weighing Block
RENFROE LOAD WEIGHING BLOCK
MOTORIZED ROTATION
Renfroe Load Weighing Block
RENFROE LOAD WEIGHING BLOCK
4 SHEAVE
Renfroe Load Weighing Block
Just as with any Renfroe product, we have our reputation, experience and our proven dependability hanging from every lifting and rigging product we manufacture. And now we’re proud to offer a new line of snatch blocks, from hook to shackle to tailboard, featuring the same quality and proof testing, as all of our Renfroe products. Reach for our new snatch block with the reassurance that it’s Renfroe.
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Forged alloy heat-treated hooks and shackles, which will not break but straighten out before failure
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Openings that allow rope insertion while block is suspended
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Swivel pin stop will stay in swivel while reeving
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Safety latch prevents disconnection from anchor point
Renfroe Snatch Blocks
SNATCH
BLOCKS
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Forged alloy heat treated hooks
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Forged alloy heat treated shackles
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Can be furnished with bronze bushings or roller bearings
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Furnished with hook latch
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Pressure lube fitting (7 1/2 through 15 Ton)
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Opening feature permits insertion of rope while block is suspended
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Hook and shackle blocks have bolt retaining system to assure no lost bolts
For further information please contact your nearest Renfroe distributor or J. C. Renfroe & Sons.
Renfroe Snatch Blocks
Snatch Blocks with HOOKS
SNATCH BLOCKS
Snatch Blocks with SHACKLES
Snatch Blocks with TAILBOARD
Renfroe Snatch Blocks
HOOK ASSEMBLY DIMENSIONS
SNATCH BLOCK ASSEMBLY DIMENSIONS
Renfroe Snatch Blocks
SHACKLE ASSEMBLY DIMENSIONS
SNATCH BLOCK ASSEMBLY DIMENSIONS
Renfroe Snatch Blocks
TAILBOARD ASSEMBLY DIMENSIONS
SNATCH BLOCK ASSEMBLY DIMENSIONS
Tackle Block Use & Maintenance Information
TACKLE BLOCK USE &
MAINTENANCE INFORMATION
GENERAL WARNINGS
Failure to use this product properly could result in injury or death. Read, understand and follow these
instructions to insure the proper use, selection and maintenance of this product.
IMPORTANT
Renfroe tackle block systems are used in a wide range of applications each of which has specifications and technical requirements that are unique to that application.
NOT FOR LIFTING PERSONNEL!!!
When ordering a Renfroe product the ultimate responsibility for selecting the correct product lies with the end user since only he has the knowledge of the application and its environment. Read these instructions carefully and completely. If you do not understand all words and definitions in this literature, call Renfroe for assistance.
Ratings shown in Renfroe literature are based on the products being in “as new” condition.
Working Load Limit (WLL) ratings indicate the maximum load a product can carry under given operating conditions. Shock loading and other conditions must be taken into account when selecting products for use in tackle block systems.
Regular inspections must be conducted to determine whether use can be continued at the Working Load Limit (WLL) stated in the literature, or withdrawn from service.
NEVER side load a Renfroe product. The hook latch must NEVER support the load. Always make sure the hook supports the load. NEVER weld on any Renfroe product. NEVER modify any Renfroe product.
TERMINOLOGY
Static Load - The load resulting from a constantly applied force or weight.
Working Load Limit – The maximum load that the product is authorized to support in general service. Working Load Limit is used interchangeably with the following terms:
• WLL • Working Load Limit
• SWL • Safe Working Load
WLL of the Tackle Block System – The WLL of a Renfroe Block applies only to the block. The WLL of a tackle block system can be limited by other parts of the system such as the WLL of the wire rope.
Proof Load – The average load to which a product may be subjected before permanent deformation occurs; the load applied in the performance of a proof test.
Proof Test – A test applied to a product solely to determine the conformity of materials and manufacturing to design parameters.
Shock Load – A sudden increased load caused by the sudden shift, jerk, or impacting of the load.
Ultimate Load – The average load or force at which the product fails, or no longer supports the load.
Tackle Block Use & Maintenance Information
GENERAL WARNINGS
TERMINOLOGY
Design Factor – A theoretical reserve capability; usually computed by dividing the ultimate load by the working load limit.
Short Ton – The weight on which Renfroe product capacities are based. Commonly used throughout the United States and Canada, the term implies a weight of 2,000 pounds and differs from the “long ton,” which amounts to 2,240 pounds.
Block – A term applied to a wire rope sheave enclosed in side plates and fitted with some attachment such as a hook or shackle.
Sheave – A grooved pulley for wire rope.
Grooves – Depressions – helical or parallel – in the surface of a sheave or drum that are shaped to position and support the rope.
Wire Rope – A plurality of wire strands helically laid about an axis.
MAINTENANCE AND INSPECTION
Full and total responsibility for inspection, maintenance and the continued use of the product, lies solely with the owner/user. Product application, environment and manner of use may imply a more thorough inspection and maintenance program is needed. It is the responsibility of the owner/user to assure that all government and industry guidelines are met.
Inspect for:
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Wear on pins, axles, rope grooves, side plates, bearings, bushings and fittings. Excessive wear is cause to replace parts or remove block from service.
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Misalignment or wobble in sheaves.
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Deformation in side plates, pins, axle fitting attachment points. Deformation is cause to remove block from service
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Deformation or corrosion of hook and nut threads.
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Weld corrosion or weld cracking.
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Proper fit, deformation and operation of the hook latch.
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Security of nuts, bolts and other locking methods, especially after reassembly following a repair or inspection.
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Deformation of hook and for wear.
LUBRICATION SCHEDULE
Lubricate at regular intervals to prevent damage to the bearing. Lubrication intervals are difficult to determine. If plant practice or experience with other applications is not available, consult your lubricant supplier.
ROLLER BEARING SWIVELS
If you got them any faster, they’d have wings! Our Roller Bearing Swivels are proof tested to handle any
job, any application. We’ll have it winging your way before you hang up the phone!
6 CONFIGURATIONS FOR ANY JOB
Eye & Hook Eye & Jaw Eye & Eye Jaw & Hook Jaw & Jaw Jaw & Eye
• Hex Shaped for Maximum Strength
• Made of Alloy Steel
• Zinc Plated to Protect from Corrosion
• Roller Bearings
• Sealed to Retain Lubricant
ROLLER BEARING AND ANGULARCONTACT BEARING
SWIVELS
Renfroe Swivels
Roller Bearing Swivels
• Streamlined Design
• Designed for High Rotational Speeds and Longer Ropes and Cables
• Made from Aircraft Grade Steel and Heat Treated for Extra Strength
• Zinc Plated to Protect from Corrosion
• Sealed to Retain Lubricant
• Two or More Angular Contact Ball Bearings
Angular Contact Bearing Swivels
Renfroe Swivels
SWIVEL PART NUMBERS
ANGULAR CONTACT BEARING
ROLLER BEARING
Renfroe Swivels
ANGULAR CONTACT BEARING
SWIVEL DIMENSIONS
ANGULAR CONTACT BEARING SWIVEL DIMENSIONS
Renfroe Swivels
ROLLER BEARING SWIVEL DIMENSIONS
ROLLER BEARING SWIVEL DIMENSIONS
Always one step ahead where safety matters most — Renfroe delivers the load limiter that will not allow an overload to proceed. Reassuring? Certainly. Every Renfroe product has to outperform the specification it was designed to meet. That's
why you should always say “yes” to Renfroe.
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Preconfigured for desired maximum load
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Easy to adjust – easily installed on fixed
end of wire rope -
Small dimensions
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Suitable for any EOT crane or lifting device with a fixed end wire rope (new or retrofit)
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Accuracy within +/- 1%
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The load limiter has been designed to prevent overloads that happen with hoisting equipment using wire rope, such as cranes, bridge cranes, lifts and industrial elevators.
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Overloads are dangerous and may damage the equipment because the operator is not aware that the load is greater than the working load of the hoisting equipment.
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The load limiter is manufactured with a flexible steel body that withstands heavy loads.
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Suitable for any EOT crane or lifting device with a fixed end wire rope (new or retrofit).
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Perfect for open air installations.
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Temperature range -22 degrees to 140 degrees Fahrenheit (-30 to +60 Celsius).
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Accuracy +/- 1%.
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Dimensionally small and quickly installed without removing the wire rope.
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Delivered ready to install, preset to your load requirement.
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Available in cable diameters 3/16” to 1 1/8” (5 to 30 mm).
Load Limiter With Tensiometer
Renfroe Swivels
SPECIAL INDUSTRIAL SUPPLIES PTY LTD.
Tel National: 0861040506
Tel International: +27117925226
Cell: +27832514312
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Unit 21, Acacia Industrial Park
17 Arbeid Avenue, Strydom Park.
South Africa.
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