Product Description:

The U12DNU-F/PA1130 is a permanent-magnet servomotor produced by Kollmorgen within the PLATINUM U Servomotors series. It is intended for closed-loop motion axes where precise torque delivery and consistent velocity are required for packaging, electronic assembly, and general automation tasks. When paired with a compatible digital drive, the unit converts electrical power to mechanical rotation for indexing, positioning, or continuous speed regulation in industrial machinery. The compact frame and brushless construction support low-maintenance operation inside control enclosures and on articulated stages.

At its rated operating point, the motor accepts a terminal voltage of 62.7 V and draws a continuous current of 7.9 A. Under these electrical conditions, the rotor can sustain a continuous stall torque of 195 oz-in while spinning up to 3000 rpm without forced cooling. The back-EMF constant is 18.50 V/KRPM, which helps match DC bus levels to commanded speed. Electrical losses are limited by a phase resistance of 0.750 ohms and a torque constant of 25.03 oz-in/A, providing linear current-to-torque conversion. The motor delivers 179 oz-in of continuous torque when the winding temperature is maintained at 25 °C and 158 oz-in at 40 °C, supporting predictable thermal behavior across typical cabinet conditions.

In dynamic segments of a cycle, the drive may command a peak current of 84 A, enabling the rotor to generate a momentary torque of 2076 oz-in for rapid acceleration or quick load-disturbance correction. This short-term capability complements the continuous thermal ratings and allows the shaft to deliver a mechanical power output of 396 W within the envelope of the motor's magnetic core. These peak values can be used to evaluate inertia ratios and gear reduction while staying within the motor's short-duration operating limits.