This Lebus grooved sleeve integrates precision machining, high‑strength material performance and practical modular structure to deliver outstanding comprehensive performance for heavy‑duty lifting equipment. Adopting a high‑precision left‑hand 60° Lebus groove structure, it can effectively guide the regular winding and arrangement of wire ropes, thoroughly avoid common problems such as rope jumping, disordered winding and extrusion wear, and significantly extend the service life of matching wire ropes. Made of high‑quality Q355D high‑strength steel with a thick‑plate integral forming structure, the product features excellent overall rigidity and impact resistance, stable structural performance under long‑term alternating heavy loads, and no easy deformation, fully adapting to harsh and high‑intensity lifting working conditions. Equipped with a standard bolt‑on modular installation method, the sleeve can be independently disassembled and replaced after wear and aging without replacing the entire drum body, which greatly reduces equipment maintenance costs and shortens operational downtime. In addition, the surface is treated with epoxy zinc‑rich primer, which provides excellent rust prevention and corrosion resistance, enabling stable operation in humid, dusty and complex outdoor construction environments. With strictly controlled dimensional tolerance and precise machining of mounting holes, inner and outer diameters and groove profiles, the product boasts high assembly accuracy and good interchangeability, realizing fast and reliable matching installation with standard smooth drums.