PK Series

Drive unit made up of an input multistage angular gear unit and a robust planetary output stage. Robust solid shaft. Synchronous servo motor EZ. Extremely compact. Highest power per unit volume. Large torque. High dynamic.

Type Ratio Max. perm. acceleration torque [Nm] Stall torque at the gear unit output [Nm] Max. perm. input speed in cyclic operation [1/min] Backlash [arcmin] Torsional stiffness [Nm/arcmin]
P521_K1_ 12 – 235 68 – 300 25 – 226 4500 – 6000 4 – 5 23 – 26
P721_K1_ 28 – 393 158 – 650 58 – 484 4500 – 6000 3.5 – 4 46 – 47
P721_K2_ 12 – 278 226 – 700 87 – 507 4000 – 5500 4 – 4.5 39 – 47
P821_K2_ 28 – 486 332 – 1400 121 – 1071 4000 – 5500 3.5 132 – 134
P821_K3_ 12 – 279 463 – 1600 163 – 1172 3800 – 5000 4 – 4.5 89 – 132
P921_K4_ 28 – 390 1103 – 2700 458 – 2047 3500 – 5000 3.5 271

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