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The basic parameters and main dimensions of ZL series couplings are made of a number of non-metallic pins, which are placed in the holes between the inner surface of the outer ring and the two half couplings. Torque is transmitted by the pins to realize the connection of the two half couplings.

Elastic pin-tooth coupling has the following characteristics:

(1) Compared with the gear coupling, the pin-tooth coupling with elastic column has simple structure, fewer components, more convenient manufacture and no gear processing machine tool. The transmission torque is large. At the same torque, the rotary diameter is smaller, smaller and lighter than the teeth coupling, which can partly replace the teeth coupling.

(2) The pin-tooth coupling with elastic column has the advantages of convenient maintenance and long service life. The nylon pin can be replaced when the baffle is removed. Nylon pin is a self-lubricating material. It does not need lubrication. It not only saves lubricating oil, but also purifies working environment.

(3) Elastic column pin-tooth coupling reduces vibration energy and noise. Elastic pin-tooth coupling is a kind of pin made of several non-metallic materials, which is placed in the orifice between the inner surface of the outer ring and the inner surface of the two-half coupling. Torque transfer through the pin can realize the connection of the two-half coupling. Elastic pin-tooth coupling has the capability of compensating the relative offset of the two axes and is suitable for medium and large power transmission. It is not suitable for working parts which require strict control of vibration and noise.