Brake guide pin and brake piston lubricating device for automobiles and motorcycles

The utility model relates to the technical field of braking, in particular to an automobile and motorcycle brake guide pin and brake piston lubricating device which comprises a brake caliper body, a brake cavity is formed in the bottom of the brake caliper body, a brake disc is rotatably installed in the brake cavity, wheel cylinder cavities are formed in the inner walls of the left side and the right side of the brake cavity respectively, and the wheel cylinder cavities are communicated with the brake caliper body. And wheel cylinder pistons are movably installed in the left wheel cylinder cavity and the right wheel cylinder cavity correspondingly, wheel cylinder reserved grooves are fixedly formed in the lower surfaces of the two wheel cylinder pistons correspondingly, wheel cylinder graphite rods are movably installed in the two wheel cylinder reserved grooves correspondingly, and a guide cavity is fixedly formed in one side of the brake caliper body. According to the automobile and motorcycle brake guide