The demand for shock absorbers (Shock Absorber; Damper) is that the spring cannot stabilize immediately, that is to say, after the spring is compressed and then released, it will continue to expand and contract for a period of time, so the shock absorber can absorb the bumps encountered by the wheel

1. The sprocket should be installed on the shaft without skew and swing. In the same transmission assembly, the end faces of the two sprockets should be in the same plane. When the center distance of the sprockets is less than 0.5 meters, the allowable deviation is 1 mm; when the center distance of