| Power source |
Type of load on driven machine |
|
Group 1 |
Group 2 |
Group 3 |
|
Even loads |
Moderate shock loads |
Heavy shock loads |
| Electric motors, turbines |
1,00 - 1,25 |
1,25 - 1,50 |
1,50 - 1,75 |
| Multi-cylinder piston engines |
1,25 - 1,50 |
1,50 - 1,75 |
1,75 - 2,00 |
| Single cylinder piston engines |
1,75 - 2,00 |
2,00 - 2,25 |
2,25 - 3,00 |
|
Electrical generators |
Piston compressors |
Ecc. presses, punching machines |
|
Centrifugal pumps |
Small piston pumps |
Drawbacks |
|
Fans |
Machine tools |
Planing machines for metals |
|
Light Conveyors |
Packaging machines |
Large piston compressors |
|
Turbo-compressors |
Woodworking machines |
Pneumatic tools freq. activated |
|
Agitators |
|
|
