PHA Series

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 4500 – 5000 71 3000 – 4500 1 1046 – 1142