Cars and light, miniature and other medium-sized trucks below the brake shoes are widely used T-shaped section of the steel rolling or steel stamping - welding made of medium-sized and other large tonnage truck brake shoe with malleable cast iron, ductile iron, cast steel Or cast aluminum alloy and other materials made of cross-section with I-shaped, mountain-shaped and other forms.
The cross-sectional shape and size of the brake shoe shall be such that the rigidity of the brake shoe is good, but there are sometimes 1 to 2 radial grooves in the steel brake shoe web of a small car which makes the bending stiffness slightly so that the brake The friction between the shoe and the brake drum is uniform and reduces the braking screaming.
The thickness of the brake shoe web and the flange is related to the vehicle, about 3-5mm for the car, and about 5-8mm for the truck. The thickness of the friction lining, the car about 4.5-5mm, more than 8mm in the truck.
The friction linings may be caulked or adhered to the brake shoe, and after the connection, the outer surface of the friction liner is machined to a prescribed size and roughness. The bonding method allows the friction thickness of the friction lining to be large (which can be used to the limit thickness of only 1 to 1.5 mm), but it is difficult to update the friction plate and it is generally necessary to replace it as a whole with the brake. The riveted friction plate is easy to be replaced Noise is small, but the thickness can be limited by rivet outcrops, and more for the thickness of more than 6.5mm friction plate.