Shaft couplings are use in machinery for numerous function, the most common use of which are the following:
- To give for connection of shafts of units that is contrived singly for example a motor and generator and to give for disconnection for maintenance or alternations.
- To reduce the transmission of shock loads as of one shaft to a further.
- To give for misalignment of shafts or to set up mechanical elasticity.
- To initiate protection beside overloads.
- It must have no projecting parts.
a. Clamp or split-muff or compression coupling
b. Sleeve or muff coupling.
c. Flange coupling. 2. Flexible Coupling Flexible coupling is use to attach two shafts have equally lateral and angular misalignment. Types of flexible coupling are given below.
a. Bushed pin type coupling
b. Oldham coupling
c. Universal coupling Requirements of a Good Shaft Coupling The requirement of good shaft coupling is given below.
- It must decrease the transmission of shock loads as of one shaft to another shaft.
- It must pass on full power as of one shaft to other shaft with no losses.
- It must clutch the shafts in perfect position.
- It must be simple to connect or disconnect.
- If must contain no projecting parts.
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