Chain hoists main parts scrapped conditions

manual hoist accessories including hooks, wall panels, sprockets, flower keying gears, so siding, sheets and other gear, chain hoists to introduce you to the following main parts scrapped conditions, such as in case of retirement should be replaced.

    1) Lifting chain
A, chain wear ring diameter than the nominal size of 10%;
B, two links from the elongation of more than 3%,wire rope winch a single link from the elongation of more than 5%;
C, cracks or other harmful defects;
2) Gear
A, tooth thickness wear more than 10% of nominal size;
B, crack;
C, broken teeth;
3) friction plate wear more than 25% of the nominal size;
4) increased wear of the chain groove size, more than 10% of nominal size;
5) between the shaft and the bearing clearance is too large,chain block more than 15% of nominal size;
6) ratchet pawl and spring severe wear or corrosion;