During the use of the crane, the mechanical parts inevitably follow the wear law and appear visible wear. The cause of the same fault may not be a one-to-one relationship. Therefore, the fault should be carefully analyzed, and the cause should be accurately found and solved. The following conditions occur on the crane pulley:
[1] uneven pulley pulley wear;
[2] The pulley mandrel wear amount is 3 to 5% of the nominal diameter;
[3] The pulley does not move;
[4] The pulley is tilted and loose;
[5] Pulley crack or rim break.

Processing method
[1] The wear of the wheel groove wall is 1/10 of the original thickness, and the radial wear amount should be replaced when the wire diameter is 1/4;
[2]Strengthen lubrication, overhaul, and need to be replaced if the fault is serious

[3] Loosen the positioning parts on the shaft, or the wire rope jumps for maintenance and replacement.

[4] Overhaul
[5] Replace

Precaution
[1] Check whether the material is uniform, whether the installation meets the requirements, and whether the rope and the wheel are in good contact;
[2] Regularly check the mandrel and wire rope wear;
[3] Regularly check whether the positioning parts on the shaft are loose and whether the wire ropes are skipped;
[4] Regularly check the wear of the pulley.