The brake drum wear limit refers to the thickness of the brake drum that gradually decreases due to friction and wear during use. When the brake drum is worn to the extreme limit (for example, the limit value of the brake drum with a diameter of 180mm is φ180mm), it needs to be replaced.

The production process of the brake drum includes: 1) sand mold preparation: clay sand mold is used and the sand mold is placed in a sand box; 2) pouring: molten metal is injected into the sand mold to form a casting; 3) cleaning: removing sand grains and impurities on the surface of the casting; 4) welding: connecting the casting with other parts of the brake drum; 5) inspection: quality inspection of the casting; 6) surface treatment: surface treatment of castings, such as painting or plating; 7) Packing: pack the brake drum and prepare for transportation

When the temperature of the brake drum is too high, the following measures can be taken: 1. Open the water drench to reduce the temperature of the wheel hub; 2. If the vehicle does not have a water drench, the driver can stop and rest and wait for the brake drum to cool down naturally; 3. Repair the brake cylinder to solve the problem of brake drag; 4. Replace the brake drum spring and repair the damaged spring; 5. Adjust the brake pad gap to ensure that the left and right brake drum are consistent; 6. Add gear oil, solve the problem of poor lubrication; 7. Check and adjust the gap between the brake drum and the brake pad.

The out-of-roundness and radial runout of the brake drum working surface should also be strictly controlled to ensure braking performance. Alibaba provides a large number of brake drum products, including brake discs and brake drums for Mercedes-Benz, Audi, BMW and other cars, as well as brake drums for commercial vehicles such as trucks, trailers, and trailers.