Product Description:

The OP-11217-001 is a flat-armature DC servo motor manufactured by Kollmorgen as part of the ServoDisc Pancake DC Motors series. This frameless unit supplies bidirectional torque in low-profile stages, pick-and-place heads, and semiconductor process actuators. In industrial automation, it converts regulated DC power into controllable rotary motion that can be regulated through closed-loop control by a drive amplifier using the built-in tachometer output.

The mechanical envelope measures 139.7 mm in outer diameter and extends 53.6 mm along the shaft axis, allowing direct mounting inside compact platens. The internal copper and iron stack produces a rotor inertia of 1.84 kg-cm², allowing acceleration requirements to be calculated without excessive drive-current surges. Electrical losses are governed by a terminal resistance of 0.750 Ω, which affects thermal rise under a steady load. When the rotor turns, it develops a back electromotive force of 10.60 V/krpm, which the drive electronics use to set voltage limits and estimate speed. The torque constant is 10.13 N-cm/A, allowing controllers to convert a commanded torque into an exact current reference.

At the nominal operating point, the motor delivers 81 N-cm of shaft torque while drawing 8.71 A from a 40.4 V supply. Under these conditions, the armature rotates at 3000 rpm and produces a mechanical output of 254 W. The design supports a continuous stall torque of 78 N-cm for static holding tasks and can reach a peak torque of 852 N-cm during short acceleration bursts. Its maximum speed is 6000 rpm, and the integrated tachometer supplies 5.30 V/krpm for velocity feedback to the servo drive. The total assembled weight is 3.6 kg, which permits integration on moving axes without a significant mass penalty.