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LIFTING - CALDWELL DM34 Dura-Mod 

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Dura-Mod DM34 Metric Ton System

Caldwell’s 34 ton Two Lifting Point Bolted Modular Spreader
beam can be configured in spreads of 3 to 32 feet.

  • Quickly configure a spreader beam to match your lift requirements.

  • Knock-down design is easily transported.

  • Unique pivoting drop link.

  • Spreader, end fittings & drop links are all INSTOCK items.

  • Capacity ratings can be provided that meet ASME B30.20, BTH-1, DESIGN CATEGORY B, CLASS 0 or ASME B30.20, BTH-1, DESIGN CATEGORY A, CLASS 0.

  • Combinations of 1 to 5 spreader sections can be used to create custom spreader beam lengths.

  • Custom designed systems available.

  • Additional spread lengths and sizes coming.

DM34 - System Items & Weights

Bolts, Nuts and Washers can be reused as long as
Anti-Seize Thread coating is used.


Note: Slings and shackles are not provided as part of this
assembly. Synthetic textile, chain and wire rope slings
may be used. Consult your sling supplier as part of your
lifting plan.

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Specifications

DM34 - Capacity VS. Span

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  • Determine the spread length required for the lift.

  • Select the components to be assembled from the right-hand columns of the chart.

  • The assembly area must be clean and level.

  • All components must be checked for damage and clean mating surfaces.

  • Use soft slings on the lifting lugs to position the sections. NEVER use a forklift to carry the beam.

  • Position the longest section in the middle of the assembly area (laid on flats to avoid rolling).

  • Attach the required components as evenly as possible on each end to achieve the correct length for the job.

  • Attach the end units.

  • Install new bolt, washer, washer and nut at each hole. Torque in a star pattern to 100 ft. lb. with Anti-Seize coating on threads.

Correct
Assembly Procedure:

  • Select the correct length slings from the load chart to give the required sling-angle.

  • Place the links in the end units with the large hole up. Install the shackles, drop links and top slings with the heavier capacity shackle to the top.

  • Attach to the crane hook and lift the spreader beam off the ground.

  • Connect the shackles and lower slings to the drop links.

  • Connect the lower slings to the load.

  • A through check of the assembly should be made by a competent person prior to commencing the lift.

  • Confirm all lifting devices are free from any damage.

  • Verify slings are not twisted.

  • Verify bottom sling angles do not exceed 5 degrees from vertical.

  • Verify all fasteners are tightened properly.

  • Use length and sling angle chart information to verify spreader system capacity. Component capacity and spreader system capacity are different.

  • Confirm the combined weight of the spreader system and the load does not exceed the crane’s rated capacity.

  • Always place the longest spreader section in the middle of the assembly.

  • Never use more than 5 spreader sections in an assembly.

  • Only lift loads from the end shackles. Never from the spreader tubes or flanges.

  • Verify the travel path is clear of any people andobstructions.

Safety
Information:

  • Never lift loads over people.

  • Obey stop signals from anyone.

  • Confirm the load is ready for lifting or transporting.

  • Ensure the load can withstand forces applied by the lifter.

  • Do not modify the lifter.

  • Verify each operator is qualified in proper lifting and rigging.

  • Confirm all lifting devices are correctly, completely, seated in the hoist hook.

  • Lift or transport only properly balanced loads using a vertical lift.

  • Accelerate and decelerate the lifter and load slowly and smoothly – avoid swinging the load

  • Do not drag loads on the ground.

  • Do not leave a suspended load unattended.

  • Bolts, Nuts and Washers can be reused as long as anti-seize thread coating is used and torque in a star pattern to 100 ft. lb.