| Type of power source |
Type of load on the driven machine |
|
|
|
|
|
Uniform load |
Moderate shock-loads |
Heavy shock-loads |
|
Centrifugal pumps |
Piston compressors |
Excenter presses |
|
Fans |
Small piston pumps |
Draw benches |
|
Light conveyers |
Cutting machine tools |
Plane machines |
|
Turbo compressors |
Packeting machines |
Large piston compressors |
|
Agitators |
Wood working machines |
|
| Electric motor, turbine |
2 - 2,25 |
2,25 - 2,5 |
2,5 - 2,75 |
| Multiple cylinder piston engine |
2,25 - 2,5 |
2,5 - 2,75 |
2,75 - 3 |
| Single cylinder piston engine |
2,75 - 3 |
3 - 3,25 |
3,25 - 4 |
| When the coupling or bolt is intended for marine applications, the safety factor has to be selected according to the rules of the referred classification society |
