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What is the standard for scrapping hooks?
Nov 08, 2018

1, the opening degree of the hook of the truck crane is larger than the original size _ should be scrapped.

In addition, the crane hook should be scrapped when one of the following conditions occurs:

1) Crack.

2) The dangerous section wears up to 10% of the original size.

3) The opening degree is increased by 15% compared with the original size.

4) Torsional deformation exceeds 10°.

5) Plastic deformation of the dangerous section or the hook neck.

6) When the hook bushing wears up to 5% of the original size, the bushing should be scrapped.

7) When the plate hook mandrel wears up to 5% of the original size, the mandrel should be scrapped.


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