For the two shafts of the universal coupling, due to manufacturing and installation errors, etc., the carrier and the temperature change will cause the relative position of the two shafts to change, and strict alignment is often not guaranteed.According to whether the coupling has elastic elements, whether it has the ability to compensate various relative displacements, that is, whether it can maintain the connection function and the purpose of the coupling under the condition of relative displacement, the coupling can be divided into rigid couplings, Flexible coupling and safety coupling.Coupling
Remarks on the main types, characteristics and their role in the function category in the transmission system.
Rigid couplings can only transmit motion and torque, and do not have other functions including flange couplings, sleeve couplings, and clamp couplings.
Flexible couplings Flexible couplings without elastic elements can not only transmit motion and torque, but also have different degrees of axial, radial and angular compensation performance, including gear couplings, universal couplings , Chain coupling, slider coupling, diaphragm coupling, etc.
The flexible coupling with elastic elements can transmit motion and torque; it has different degrees of axial, radial, and angular compensation performance; it also has different degrees of damping and buffering effects to improve the working performance of the transmission system, including Various non-metal elastic element flexible couplings and metal elastic element flexible couplings have different structures and great differences, and their roles in the transmission system are also different.
The safety coupling transmits movement and torque, and overload safety protection.Flexible safety couplings also have different degrees of compensation performance, including pin type, friction type, magnetic powder type, centrifugal type, hydraulic type and other safety couplings.