The PHA Series ServoFit® Precision Gearhead is designed for applications requiring smooth and precise movement. This inline unit is the advanced version of our PH series, making it the most accurate and efficient flanged planetary gearhead available.
| Type | Ratio | Max. perm. acceleration torque [Nm] | Weight [kg] | Max. perm. input speed in cyclic operation [1/min] | Backlash [arcmin] | Torsional stiffness [Nm/arcmin] |
|---|---|---|---|---|---|---|
| PHA321 | 5 – 10 | 50 – 65 | 1.4 – 2.3 | 6000 | 2 | 11 – 15 |
| PHA322 | 20 – 100 | 50 – 65 | 1.7 | 8000 | 2 | 12 – 15 |
| PHA421 | 4 – 10 | 100 – 130 | 3.9 – 4.6 | 5000 – 6000 | 1 | 21 – 35 |
| PHA422 | 16 – 100 | 100 – 130 | 4.5 – 5.2 | 6500 – 8000 | 1 | 20 – 29 |
| PHA521 | 4 – 10 | 250 – 320 | 6.6 – 8.3 | 5000 – 6000 | 1 | 53 – 85 |
| PHA522 | 16 – 100 | 250 – 320 | 8.1 – 8.8 | 6000 – 7000 | 1 | 52 – 70 |
| PHA721 | 4 – 10 | 500 – 700 | 12 – 16 | 4000 – 5000 | 1 | 113 – 167 |
| PHA722 | 16 – 100 | 500 – 700 | 15 – 16 | 5000 – 6500 | 1 | 112 – 148 |
| PHA821 | 4 – 10 | 1200 – 1700 | 35 | 3500 – 4000 | 1 | 302 – 433 |
| PHA822 | 16 – 100 | 1200 – 2000 | 40 – 44 | 4500 – 6000 | 1 | 304 – 479 |
| PHA932 | 12 – 60 | 3701 – 5000 | 71 | 3000 – 4500 | 1 | 1046 – 1142 |
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