Lebus Split Drum Sleeve  For Φ22 Wire Rope  Left Hand 60° Lebus Groove

1.Product Description

Model JC-40T-9-3-0 split Lebus drum sleeve, welded assembly, for Φ22 steel wire rope. It adopts left-hand 60° Lebus broken-line groove design, with 120° parallel section and 60° transition sections on both sides. It is split after machining, easy to retrofit onto existing smooth drum without replacing the whole drum, to realize neat multi-layer wire rope spooling.

2.Product Parameter

3.Advantages

1. Achieve orderly multi-layer spooling, effectively prevent rope crossing, crushing and bird-nesting. Ordinary helical grooves are only suitable for single-layer winding. The Lebus design only changes layers at the 60° transition zones, while the 120° section keeps wire ropes parallel. The upper rope sits neatly in the gap between lower ropes, avoiding rope cutting, jamming and unexpected jumping.
2. Extend wire rope service life greatly and cut operational cost. Uniform contact stress reduces local squeezing, sharp bending and abrasion. The service life of wire rope can be improved by 30%~80%. It lowers the frequency of rope replacement and downtime caused by rope failure.
3. Split sleeve design for low-cost retrofitting. No need to replace the complete winch drum. It can be fitted on original smooth drums directly. Fast installation via plug weld holes and threaded holes. Ideal for renovation and upgrade of old winches with limited budget and short construction window.
4. Stable line pull and less dynamic impact to protect the whole drive system. Consistent rope arrangement reduces tension fluctuation and impact load during lifting and lowering. It protects hydraulic motors, gearboxes, brakes, bearings and lifting accessories from fatigue damage, lowering breakdown rate and maintenance cost.
5. Precision machined groove with stable profile and high wear resistance. Groove pitch, R radius and transition angle are precisely machined. Smooth surface prevents scratch on wire rope. Welded heavy-duty structure delivers high rigidity and shock resistance, keeping groove shape stable under continuous heavy load.
6. Increase effective rope capacity of the drum. Controlled multi-layer winding allows more rope to be stored on the same drum width without chaos, meeting the requirement of long cable retrieval where installation space is limited.
7. Improve winch control accuracy for automated systems. Less rope slipping and shifting ensures stable rope length counting. It works well with VFD and encoder-controlled winches, supporting precise positioning and controlled lowering.
8. Strong environmental adaptability. Robust structure works reliably under salt spray, dust, low temperature and humid conditions. It can be coated with anti-corrosion treatment for marine and outdoor heavy-duty applications.

4.Applications

Offshore winch, deck winch, logging winch, crane hoist, port mooring winch, mining hoist, piling machinery, oil & gas drilling rig lifting system.