PH Series

Ideal for precision servo applications, the PH Series ServoFit® Precision Gearhead is designed for applications requiring high torsional stiffness and tilting rigidity. This inline unit has a flange output and short motor adapter length for easy and secure motor mounting. The PH series speed reducer has a backlash of ≤3 arcmin and readily attaches to any servo motor.

Type Ratio Max. perm. acceleration torque [Nm] Weight [kg] Max. perm. input speed in cyclic operation [1/min] Backlash [arcmin] Torsional stiffness [Nm/arcmin]
PH321 5 – 10 50 – 65 1.7 – 2.3 6000 4 11 – 16
PH322 20 – 100 50 – 65 1.7 – 2.2 8000 4 12 – 15
PH421 4 – 10 100 – 130 3.9 – 4.6 5000 – 6000 3 21 – 39
PH422 16 – 100 100 – 130 4.6 – 5.2 6500 – 8000 3 20 – 29
PH521 4 – 10 250 – 320 6.6 – 8.3 5000 – 6000 3 55 – 98
PH522 16 – 100 250 – 320 8.1 – 8.8 6000 – 7000 3 52 – 71
PH721 4 – 10 500 – 700 12 – 16 4000 – 5000 3 117 – 185
PH722 16 – 100 500 – 700 15 – 16 5000 – 6500 3 112 – 150
PH821 4 – 10 1200 – 1700 35 3500 – 4000 3 317 – 634
PH822 16 – 100 1200 – 2000 40 – 44 4500 – 6000 3 305 – 484
PH932 12 – 60 4500 – 5000 71 – 75 3000 – 4500 3 1057 – 1240
PH1032 18 – 60 5551 – 7500 86 – 91 3000 – 4500 3 1602 – 1778