Round steel wire rope and sheave diameter
The relationship between the diameter of round steel wire rope and the sheave diameter mainly lies in the impact of the diameter ratio on the service life of the steel wire rope and the specific application standards.
Release Time:
2025-07-02
The relationship between round-strand wire rope and sheave diameter mainly lies in the impact of the diameter ratio on the wire rope's lifespan and specific application standards.
Diameter requirements for wire rope wrapping around drums or sheaves
According to engineering safety regulations, when a wire rope wraps around a drum or sheave, the diameter of the drum or sheave is usually related to the wear and lifespan of the wire rope. International standards (such as ISO) and domestic standards (such as GB/T 5972) stipulate that the minimum diameter of the sheave or drum is generally 18 times the nominal diameter of the wire rope to ensure reduced wire rope bending stress and improved safety.
Characteristics of round-strand wire rope
Round-strand wire rope uses a line contact structure (such as Warrington type, Seale type) to achieve parallel arrangement of interlayer wires, reducing frictional resistance, and having better bending performance and load-bearing capacity than ordinary wire ropes. Its unit weight is 7-10% lighter than the same diameter of irregular strands, but due to the complex three-time twisting process, the production cost is higher. Common specifications cover diameters of 5-60mm, and materials include galvanized steel wire and fiber/steel core.
Standards for the ratio of traction sheave to wire rope diameter in elevators
In elevators, the ratio of traction sheave diameter to wire rope diameter significantly impacts elevator safety and performance. According to GB/T 7588-2003 and TSG T7007-2022, the ratio of the pitch circle diameter of the traction sheave to the nominal diameter of the wire rope should not be less than 40 to ensure safe elevator operation.
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2025-07-02
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