How to modify vane air motor performance ?
There are two methods of altering the power of an air motor: Throttling or pressure regulation. The best approach depends on the conditions of the individual application.
When selecting an air motor for a specific application, the first step is to establish the 'working point'. This is the combination of the desired operating speed for the motor and the torque required at that point.
The free speed and torque can be reduced by up to half on Chicago Pneumatic motors. The air motor can be operated at any point in the color-coded area
Throttling
Throttling is synonymous with air flow control and affects speed more than torque.
Air supply reduction |
Air exhaust reduction |
Reduces speed |
Reduces speed |
Decrease air consumption |
Keeps a good starting torque |
Reduces starting torque |
Keeps stability |
May impact functioning stability |
|
Pressure regulation
If a pressure regulator is used, it is always fitted into the air inlet of the motor. A pressure regulator is suitable if the stall torque is to be changed but a high starting torque is less important.
Motor performance with other air pressures
Correction factors
| Air pressure | Output | Speed | Torque | Air consumption |
|
| Bar | Psi | ||||
| 7 | 101 | 1.13 | 1.01 | 1.09 | 1.11 |
| 6 | 87 | 0.94 | 0.99 | 0.95 |
0.96 |
| 5 | 73 | 0.71 | 0.93 | 0.79 | 0.77 |
| 4 | 58 | 0.51 | 0.85 | 0.63 | 0.61 |
| 3 | 44 | 0.33 | 0.75 | 0.48 | 0.44 |
On which markets are air motors used?
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