Product Description:

The H31NLHC-LNS-NS-02 is a hybrid stepper motor produced by Kollmorgen in the H Hybrid Motors series. This two-phase unit blends permanent-magnet and variable-reluctance principles to generate incremental motion without feedback sensors. It is used in indexing tables, pick-and-place axes, and light conveyors, where drive pulses translate directly into predictable shaft rotation. Standard construction, a smooth shaft, and NEMA mounting holes allow straightforward integration with existing machinery. Because it operates without an encoder, position depends on commanded step count and available torque during motion.

Mechanical fit is based on the NEMA 34 frame, so it can replace or upgrade other 4.25-inch square motors without bracket changes. The rotor can oppose load torque up to 1.58 Nm, which is the maximum static load when holding current is applied. Each phase is excited at 3.0 A through 0.94 Ω windings to create the magnetic field that produces 200 full steps per revolution. Current rise time depends on a phase inductance of 6.4 mH, which limits usable step frequency and affects drive tuning. Every control pulse advances the shaft by 1.8 degrees, which simplifies position calculations to integer step counts in open-loop control schemes.

The operating envelope spans -20°C to +40°C, allowing installation in unconditioned panels. Axial thrusts up to 801 N can be applied along the shaft, while belt or gear side loads must remain below 156 N to help preserve bearing life. Splash-proof leads exit through a 1/2-inch NPS conduit connector and terminate on an internal board, which helps keep debris out of the housing. Class B insulation, 100 MΩ resistance, and a 340 Vdc dielectric rating protect the windings from voltage spikes. With rotor inertia of 0.0083 oz-in-s² and an overall weight of 1.45 kg, the motor supports moderate acceleration without adding excessive mass to moving structures.