The composite brake pad is shown in Figure 1 using composite materials, 4 small brake pads are installed on one brake pad holder, two brake pads are installed on one side. The brake pad can be fan-shaped, and three (or five) radial grooves are designed on a combined brake pad for heat dissipation and discharge of tiny dust particles after brake pad wear. The thickness of the brake pad is 35mm, the weight is 3.6Kg, the wear thickness is 30mm, and the wear limit mark is set at 5mm from the steel back of the gate to facilitate daily wear inspection. The average dynamic friction coefficient of the brake pad is 0.35 and the static friction coefficient is 0.3.

The back of the composite brake pad is with a 1.2mm~1.5mm thickness steel plate stamped and formed with a dovetail groove to increase the strength of the composite brake pad, at the same time serve as a connection between the brake pad and the brake pad holder. Through the holes in the steel back, after special treatment, the composite pad is firmly bonded to the steel back.

When are the Brake Pads need Replacement:

(1) The brake pad material is mismatched and causes noticeable damage to the brake rotor.

(2) The total area of detached, peeled, or initially cracked sections of the brake pad exceeds 2cm², or the steel backing has an area of depression greater than 1cm².

(3) The wear limit for the brake pad is defined as 9mm. If the remaining thickness of the brake pad after wear is less than 9mm (thickness at any location on the brake pad should not be less than 9mm).

(4) The brake pad shows abnormal wear, with a significantly faster wear rate compared to other brake pads.

(5) The uneven wear of the brake pad exceeds 3mm (difference between the thickest and thinnest areas).

(6) The thickness difference between the brake pads on both sides of the same brake rotor exceeds 3mm.

Kunshan Alex Railway Fastening Co.,ltd could provide customizing and exporting service for different types of composite brake pads. If you have any questions we are pleased to support at any time. Contact us today~