The winding component, supplied separately from the winch
A hoist drum winds and stores the lifting wire rope on a rotating barrel between flanges. The procurement item here is the drum component or its replaceable grooved sleeve. The rope construction, groove pattern and installed approach geometry determine whether that component is suitable for the intended winding arrangement.
Separately supplied wire-rope hoist drums: barrel/core, flanges and rope-specific grooved sleeves, with shaft/support interfaces identified on the component drawing. Complete hoisting winches and their drives/brakes are on 7772; paired main/auxiliary crane hoists on 7804; rope tension sensing mechanisms on 8434. Chain wheels and complete winch packages are outside this component scope.
01
LeBus supplies grooved cylindrical sleeves fitted over an existing or new drum core. Its product description explains that split sleeves can be welded or bolted onto the core, allowing a worn sleeve to be replaced separately from the complete drum assembly. Identify which of these items the quotation includes, and the attachment arrangement for the particular core. [1]
The grooves are made for a specified rope size and guide its movement across the drum width. A sleeve quotation therefore needs the core dimensions, flange arrangement and rope specification; a nominal barrel diameter alone does not define the winding surface. The supporting drum, flange and shaft interfaces still need their own component drawing and load verification. [1]
02
verope distinguishes ungrooved or helically grooved single-layer drums from helical or Lebus-type multilayer drums. It identifies rope flexibility, radial stability and the drum-to-rope diameter ratio as influences on spooling quality. It also explains that rope lay and drum winding direction must be considered together, with the reeving or most-used layer taken into account for multilayer winding. [2]
The published groove descriptions use different proportions. LeBus describes cross winding over approximately 20% of the drum circumference and parallel wraps over 80%. verope describes a parallel portion covering one-third of the circumference followed by an inclined portion of about one-sixth, at 3°. These source descriptions are retained separately; obtain the proposed groove drawing from the drum supplier rather than treating them as interchangeable dimensions. [1] [2]
Roland Verreet’s March 2003 CASAR paper illustrates why the effective rope diameter matters: an undersized rope relative to the drum pitch can shift the crossover zone away from the intended alignment, producing rope displacement and damage. The paper also discusses matching spooling aids to the effective rope diameter. Its examples explain a mechanism, rather than establishing a current universal diameter tolerance or service-life rating. [3]
LeBus specifies perpendicular drum flanges even under load, adequate rope tension to keep the rope seated, a centred fixed approach point and a rope that retains its round shape under loading. Include the installed approach arrangement and loaded flange behaviour in the drum review. A groove pattern by itself does not qualify the complete lifting system. [1]
03
Paste it into your enquiry below or into an email to a maker, then replace every bracket.
Delivery: [bare drum assembly or split grooved sleeve; included flanges/shaft interfaces] Rope: [construction; lay; nominal and measured diameter; load-dependent diameter information] Winding: [single/multilayer; required stored length; groove drawing; working layer range] Installation: [shaft/support drawing; approach point; fleet-angle arrangement; flange behaviour under load] Replacement sleeve: [core drawing; attachment method; dimensional inspection] Evidence: [component structural verification; rope/drum matching review; inspection and acceptance requirements]
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LeBus describes a split grooved sleeve fitted over a drum core by welding or bolting. It replaces the winding surface within a specified installation; the quotation must identify whether the core, flanges and shaft interfaces are included. [1]
The CASAR paper shows how a rope that is too small for the drum pitch can displace the crossover zone. verope also identifies rope radial stability and drum geometry as influences on spooling. Match the proposed rope and groove drawing as a pair. [3] [2]
Sources checked 2026-10-18. The sleeve manufacturer and rope supplier describe their own winding arrangements. The historical CASAR paper explains multilayer spooling mechanisms; its examples are not used as current regulatory or universal drum ratings.
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