What Cause the Irregular Holes On Drum Brake Linings?
When the heavy-duty drum brake pad is riveted, if the diameter of the brake pad is found to be irregular, This brake pad has quality problems. Because the aperture is irregular, the brake pads are riveted.
After the completion, the inner diameter of the hole and the outer diameter of the rivet are unevenly bonded, and the rivet head portion and the friction material are Part of the contact area is uneven, and there will be brittle cracks after several brakes.
