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What should I do with the brake of a 5-ton electric chain hoist?

As a commonly used lifting equipment, the 5-ton electric chain hoist has lost its braking function due to brake failure, including complete failure and partial failure. Complete failure means that the braking function has no effect at all, and the chain and heavy object are in a sliding state. So, what should the operator do if they suddenly encounter brake failure during use?
Brake failure is due to the hoist being out of service for too long, resulting in a decrease in braking capacity. In this case, the brake nut needs to be readjusted;

When this situation still occurs after adjustment, it is necessary to remove the brake ring and check whether there is any oil stains on the brake surface. The presence of oil stains can also reduce the friction coefficient and cause excessive sliding distance;
Loose or damaged brake rings can also reduce braking force. In this case, it is necessary to locate the location of poor contact and perform grinding. When grinding is not possible, components need to be replaced;
After prolonged use, the pressure spring of the brake may also experience a decrease in spring force. If the brake is not firm enough, you can also try replacing the spring.