Stress‑Relieved Welded Luffing Drum Assembly With Lebus Groove High‑Strength Q355B For 12mm Wire Rope

1.Description

This Lebus double‑folded rope groove luffing drum assembly (Model DN12‑D400‑L485) is a complete winch drum unit engineered for 12 mm wire rope multi‑layer winding. Fabricated from Q355B high‑strength steel plate, the drum undergoes post‑weld stress‑relief aging treatment to eliminate welding residual stress, improving structural stability under repeated heavy‑load operation.

The Lebus double‑folded rope groove features left‑hand 60° layout with 12.76 mm pitch. It guides wire rope to wind neatly across multiple layers, effectively solving common troubles including rope overlapping, rope biting and premature wire‑rope wear.

Supplied as a full‑finished assembly, it comes with shafts, end flanges and complete standard fasteners for direct installation. The surface is coated with zinc‑rich primer for reliable anti‑corrosion performance, suitable for outdoor and harsh construction‑site environments. Total product weight reaches 131KG.

2.Parameter

3.Advantage

The LBS grooved drum addresses difficulties arising from wire‑rope winding operations. When compared against plain smooth‑surface drums and conventional helical‑groove drums, the LBS groove delivers superior performance for multi‑layer wire‑rope coiling. Its proprietary groove profile enables steady and orderly rope spooling, while uniformly distributing load stress across every rope layer. This design mitigates wire‑rope deterioration, prolongs rope service lifespan, enhances overall equipment operational safety, and minimizes unplanned machine downtime caused by frequent rope‑replacement work.

4.Application

This drum assembly fits multiple heavy‑duty industrial sectors. It serves lifting & crane equipment including overhead lifting machines, tower cranes, gantry cranes and crawler crane winches. It also covers petroleum‑related facilities such as oil drilling rigs, tractor hoists, workover rigs, trailer‑mounted pumping units and logging winches.
Suitable for offshore maritime machinery: offshore oil crane winches, mooring, traction, man‑riding, anchor and hydrologic winches.
Besides, it matches construction‑site wall‑washing winches, winding hoists and windlasses, mining dispatching, prop‑pulling and sinking winches, as well as engineering cable winches, piling machines and hydraulic winches.