The brake failure of a chain hoist may be caused by various reasons. The following are some common causes and corresponding troubleshooting methods:

1、 Reason for brake malfunction

Brake pad wear:

Long term or improper use can lead to severe wear of brake pads, thereby reducing braking performance.

Improper adjustment of brake system:

Improper adjustment of the clearance and position of various components of the brake system (such as brake shoes, rocker arms, etc.) can affect the braking effect.

Insufficient or excessive lubrication:

Some components of the brake system, such as the rocker arm shaft, require regular lubrication. Insufficient lubrication can lead to increased wear of the components, while excessive lubrication may contaminate the brake pads and reduce braking performance.

Brake system contamination:

The brake system may be corroded by pollutants such as dust and oil, which can reduce the friction between the brake pads and brake drums (or brake discs), thereby affecting the braking effect.

Mechanical malfunction:

Some mechanical components of the brake system, such as pull rods, springs, etc., may experience fractures, deformations, and other malfunctions, leading to brake failure.

Hydraulic system failure (if the chain hoist adopts a hydraulic brake system):

Insufficient oil, oil contamination, pipeline leakage, or pump failure in hydraulic systems can all lead to a decrease or failure in braking performance.

2、 Troubleshooting methods

Check the wear of brake pads:

Regularly check the wear level of brake pads, and replace them promptly if they are severely worn.

Adjust the brake system:

According to the user manual or relevant standards of the chain hoist, adjust the clearance and position of each component of the brake system to ensure good braking performance.

Maintain appropriate lubrication:

Regularly inspect and lubricate the lubrication components of the brake system to ensure sufficient lubrication and not excessive.

Clean the brake system:

Regularly clean the brake system to remove dust, oil, and other pollutants, and maintain cleanliness and friction between the brake pads and brake drums (or brake discs).

Check and replace faulty components:

When mechanical components of the brake system are found to have faults such as breakage or deformation, they should be replaced in a timely manner.

Check the hydraulic system (if applicable):

Check the oil volume, oil quality, pipeline connections, and pump body working status in the hydraulic system, and promptly handle any abnormalities.

Professional maintenance:

If none of the above methods can solve the brake failure, it is recommended to contact professional maintenance personnel for inspection and repair.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment