XINLAN analyzes the precautions for the selection of the expansion sleeve diaphragm coupling

CouplingThe principle of need should be considered based on the six aspects of speed, torque, assembly and disassembly, neutrality, cost, and environment.
The principle of coupling needs should be considered based on the six aspects of speed, torque, assembly and disassembly, neutrality, cost, and environment: the selection principle of expansion sleeve diaphragm coupling:

1. Choose the appropriate form: Determine the appropriate type according to the requirements of mechanical characteristics, such as transmission torque, stiffness requirements, vibration, impact, acid and alkali corrosion resistance, transmission accuracy, etc.
2. Calculate the torque
The maximum torque transmitted by the coupling should be less than the allowable torque value. *The determination of large torque should consider the acceleration and deceleration torque and overload torque required for machine braking.However, when the design data is insufficient or the analysis is difficult, and the maximum torque is not easy to determine, it can be selected according to the calculated torque.That is, the calculated torque does not exceed the allowable torque value.
Calculate torque Tc: use the following formula to calculate Tc=KT T=9550*(Pw/n) T=7020*(Ph/n) where T——theoretical torque, N*m
k——driving power, kw Ph——driving power, horsepower n——rotating speed, rpm
3. Select the type of shaft hole and key (or expansion coupling sleeve).

4. Determine the aperture range (Note: When the diameter of the driving and driven shafts are different, the coupling specifications should be selected according to the large end diameter)

5. Rotation speed n: n ↑, flexible coupling of non-metal elastic element;
6. Torque T: T ↑, choose rigid coupling, non-elastic element or flexible coupling with metal elastic element; T has impact vibration, choose flexible coupling with elastic element;
7. Assembly and disassembly: Considering the convenience of assembly and disassembly, choose a coupling that can directly move radially;
8. Alignment: For neutral alignment, choose a rigid coupling, and when compensation is needed, choose a flexible coupling;
9. Cost: Under the same conditions, try to choose a coupling with low price and simple maintenance;
10. Environment: If working at high temperatures, couplings with non-metallic components cannot be selected.