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1 Front wheel hub 7 Bolt 13 Piston damping washer 2 Dust cover 8 Bolt 14 Bracket 3 Brake pad assy. 9 Left caliper housing 15 Lock screw 4 Dust boot 10 Piston 16 Brake disc 5 Guide rod 11 Piston gasket 17 Screw 6 Bleeder valve screw 12 Piston dust cover Structure of Front Wheel Disc Brake The rotating component of front brake is the brake disc, which is fixed onto the wheel hub The piston gasket installed in the caliper housing is elastically deformed when braking, and Characteristics of Front Wheel Disc Brake * Stable braking performance. The disc brake is generally free of the friction adding effect, so the friction factor makes very limited influence on the braking performance, and the * Good water stability, i.e., its efficiency decrease is small after being soaked in water. The brake lining of disc brake is with high unit pressure which is easy to squeeze out the water, * Lower possibility of forming the hot crack or hotspot under the high temperature than that of the brake drum provided that the brake disc is not too thick. * Smaller dimension and lighter weight than drum brake in case that their output moments of braking force are the same. * Extremely low thermal expansion in the thickness direction of brake disc, which isn't the same as the thermal expansion of brake drum to make the clearance of brake increase * Easy and automatic clearance regulation, and simple maintenance and repair operation. P-10 |