Jiaozuo brake

Grinding method of disc brake

The disc brake shall grind each brake shoe to make the contact area reach more than 60% of the brake shoe volume. The grinding method is as follows:

1. Ensure that the brake disc is clean before grinding.

2. Predict the oil pressure value when sticking the brake shoe.

3. Predict the thickness of each brake shoe (brake block). To ensure the contact area of the brake shoe, reduce the grinding time, and ensure that the center line of the brake shoe and the brake cylinder is vertical after installation, the brake shoe can be removed first, and the brake shoe can be planed based on the contact surface between the brake shoe and the sliding sleeve until it is flat, and then assembled onto the brake.

4. Start the main motor for grinding the brake shoe (do not hang steel wire ropes or lift containers), and the positive pressure for grinding should generally not be too high, slightly 0.2-0.4 Pa lower than the oil pressure for grinding the brake shoe. The grinding of brake shoes should be carried out at low speed. When grinding, it is necessary to always pay attention to the temperature of the brake disc not exceeding 80 ℃ (measured with a temperature gauge) to avoid damaging the surface roughness of the brake disc. When the temperature exceeds the limit, stop grinding and wait for cooling before running. Operate intermittently in sequence until the contact area of the brake shoe meets the requirements.