Shaft holes and connection dimensions for coupling

Shafting drive usually consists of one or more couplings connecting the main and driven shafts to form a shafting drive system to transmit rotation or motion. Coupling is mainly due to the motor, reducer and working machine shaft connection, its shaft hole form, connection form and size mainly depends on the type and size of the connected shaft, product design generally according to cylindrical and conical shaft depth standard design shaft, shaft depth standard is for shaft design.

A variety of different forms of coupling in the structural design and series design, based on the size of the transfer torque, the structure of the coupling and the strength of the hub, determine the size of the shaft hole of the coupling (large and small shaft hole) and the length of the shaft hole, each specification only one shaft hole length. In foreign countries, no matter which region of foreign countries all the production of coupling enterprises in different coupling standards, are only one shaft hole length of each specification of the coupling. Due to the misleading of GB/T3852, each specification of China's coupling product standard should have a variety of shaft hole length along with the change of the shaft hole, the foreign coupling standard into China's standard also add a variety of shaft hole length, it seems that only in this way is a complete transformation.