Considerations for selecting couplings

1. Mechanical characteristics of the power machine

. Between the power machine and the working machine, the driving and driven ends are connected by one or several couplings of different types and specifications to form a shaft transmission system. Due to the different working principles and mechanisms of power machines, their mechanical characteristics vary greatly, which has different impacts on the transmission system. Different types of power machines, due to their different mechanical characteristics, should choose the corresponding power machine coefficientKW and select the best coupling suitable for the system. The type of power machine is the basic factor in selecting the type of coupling. The power of the power machine is one of the main bases for determining the performance of the coupling, which is proportional to the torque of the coupling.

2. The positive deflection correction ability

refers to the radial, angular and axial recovery capabilities of the elastic coupling, and the elastomer itself has the ability to withstand it. According to the connection accuracy and errors of the machinery and the situation of the use occasion itself, select couplings with different correction capabilities to correct mechanical errors and extend the service life of motors and screws or other transmission devices.

3. Load categories

Due to differences in structures and materials, the load capacity of the couplings used in the transmission system of each mechanical product varies greatly. Load categories are mainly different load categories formed for the impact, vibration, forward and reverse rotation, braking, frequent starts and other reasons of mechanical workload. The load category of the transmission system is the basic basis for selecting the type of coupling.

4. Allowable speed of the coupling

The allowable speed range of the coupling is calculated and determined based on the allowable linear speed and maximum outer edge size of couplings made of different materials. Different materials, varieties and specifications of couplings have different allowable speed ranges. Changing the material of the coupling can increase the allowable speed range of the coupling, depending on the different machinery category.

5. Working environment

Coupling is used in conjunction with various host products. The surrounding working environment is relatively complex, such as temperature, humidity, water, steam, dust, sand, oil, acid, alkali, corrosive media, salt water, radiation and other conditions. This is One of the important factors that must be considered when selecting a coupling. Depending on the environment, the coupling materials selected are also different.

技术支持：Edward Wu

编辑：Olivia Li