High‑Load Left‑Hand 45° Double‑Folded Lebus Winch Drum, Q345B Heavy‑Duty Welded Drum

1.Description

This winch drum is fabricated from Q345B steel, designed for Φ10.3 mm right‑hand wire rope with 30 winding turns. It adopts left‑hand 45° Double‑Folded Lebus groove. The groove bottom diameter is Φ246 mm and groove pitch is 10.5 mm. Observed from the motor‑mounted side, counter‑clockwise drum rotation corresponds to winch hoisting operation. The wire‑rope anchoring point is arranged on the motor‑mounted side. The drum’s maximum single‑rope pulling force reaches 2.8 tons. The effective groove length is 315 mm, overall drum length 371±0.5 mm. Ten M12‑6H threaded holes with tapping depth 24 are reserved on the motor‑mounting flange for motor assembly. Precision‑machined Lebus double‑folded grooves ensure tidy multi‑layer wire‑rope spooling, avoiding rope jumping and disorder winding. It is an integrated core component for small‑and‑medium‑size hoisting winches.

2.Parameter

3.Advantage

Engineered for compact‑size hoisting winch systems, this Q345B welded winch drum delivers reliable mechanical strength under frequent lifting cycles. Its precisely machined left‑hand 45° double‑folded Lebus groove enables stable multi‑layer rope spooling, effectively eliminating rope jumping, overlapping and extrusion damage to extend wire‑rope service life. Optimized structure layout sets the rope anchoring point at motor‑mounted side, matching counter‑clockwise hoisting rotation requirement perfectly. Rated for 2.8‑ton single‑rope load capacity, the drum maintains stable performance under repeated dynamic loads. Pre‑machined M12 mounting holes ensure high‑precision connection with drive motor for straightforward assembly. Robust Q345B steel construction offers good weldability and structural rigidity to resist deformation during daily hoisting operations.

4.Application

This double‑folded Lebus winch drum is purpose‑built for compact hoisting winches, small marine winches and mobile construction machinery where tidy multi‑layer rope spooling and compact installation dimension are a critical operational requirement. The left‑hand 45° Lebus double‑folded groove with 30 winding turns makes it particularly suitable for small‑size deck winches, where winch systems must handle frequent cyclic hoisting operations. In light‑duty marine equipment and mobile lifting machinery, the Lebus groove geometry ensures consistent spooling performance across the full depth of wrap. For operators seeking an integrated high‑strength drum body that combines 2.8‑ton single‑rope load capacity with precision rope management, this drum delivers field‑proven reliability in demanding light‑marine and mobile industrial environments.