Product Description:

The H31NRFT-LNN-NS-00 is a hybrid stepper motor manufactured by Kollmorgen as part of the H Hybrid Motors series. This component pairs with stepper drives to deliver discrete angular increments for indexing tables, light actuators, and other automated machinery. It is intended for repeatable motion in applications that do not require feedback devices for position verification, and it can translate commanded step sequences into consistent angular movement across repeated cycles.

This motor uses a NEMA 34 frame for direct attachment to standard mounts. It produces a holding torque of 236 oz-in (1.67 N·m), allowing it to keep loads stationary between steps. Each full step equals a 1.8-degree rotation, and with 200 steps per revolution, the device supports precise incremental moves with a step accuracy of ±1.5%. Eight phase conductors exit the housing through a regular lead-wire connection, and the 8-lead topology allows series or parallel winding connections to suit current requirements for low-speed torque. The motor uses 12-inch leads to reach drive terminals, and its 2.58-inch body length keeps the overall envelope compact. A single stack, a smooth shaft, and standard NEMA-style mounting help keep mechanical integration straightforward.

The windings use Class B insulation rated to 130 °C and withstand an insulation voltage of 340 Vdc while maintaining at least 100 MΩ resistance to ground. Ambient operation is permitted from -20 °C to +40 °C, and heat leaves the frame through a thermal path of 3.9 °C/Watt to help keep the stator within its temperature limit. The rotor's reflected inertia of 0.0083 oz-in-s² supports rapid acceleration with light loads, and the unit mass of 3.2 lb (1.45 kg) helps limit structural loading on small gantries. These thermal and electrical limits support low-speed, high-torque operation in compact control cabinets.