Product Description:

Kollmorgen manufactures the JR16M4CHLR-1, a low-profile brushed DC servo motor in the ServoDisc Pancake DC Motors series. The flat disc armature and frameless construction make the unit suitable for direct integration into rotary stages where compact axial length and rapid acceleration are required. In industrial automation, it converts drive current into controlled torque, allowing closed-loop positioning of tooling plates, vision turntables, or light-duty actuators.

The motor has a face diameter of 7.38 in and weighs 17.5 lb, allowing it to fit inside slim equipment bays while providing sufficient mass for thermal dissipation. At rated operating conditions, the terminals receive 84.2 V, the armature resistance is 0.530 Ω, and the continuous current is 13.9 A. At this operating point, the armature turns at 3000 rpm while delivering 993 W of mechanical output power. The back-EMF constant is 25.50 V/krpm, indicating the voltage generated for each speed increment and supporting predictable speed control. With a moment of inertia of 0.075 oz-in-s², the rotor responds quickly to changes in the commanded current. Static friction torque remains at 11.0 oz-in to minimize deadband during low-speed positioning and directional changes.

During transient operation, the unit may be driven up to 5000 rpm, a limit that protects the commutator and bearings from excessive mechanical stress. The drive can also supply a peak current of 148 A, allowing the motor to produce a maximum torque of 315 lb-in for short positioning moves. Continuous stall torque is rated at 28 lb-in, so the motor can maintain static holding torque while keeping its temperature rise within operating limits. The torque constant of 34.50 oz-in/A establishes the proportional relationship between armature current and shaft torque, supporting precise current-mode control. This relationship allows the controller to adjust output torque directly in response to changing motion commands and external loads.