E31NRHT-LNN-NS-00 Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen E31NRHT-LNN-NS-00 is part of the E Hybrid Stepper Motors series and features a NEMA 34 frame size with NEMA mounting style. It delivers a holding torque of 337 oz-in, rated current per phase of 5.4 Amps, and uses SIGMAX motor construction for maximum torque at low speed. This stepper motor has a step angle of 1.8 degrees, a smooth shaft, and weighs 3.2 pounds.
Internal Product Review
The E31NRHT-LNN-NS-00 is a Kollmorgen hybrid stepper motor with a NEMA 34 frame and 337 oz-in holding torque. A 1.8-degree step angle and ±1.5% step accuracy support confident positioning in low-speed indexing applications. Regular leadwire connection and max-torque-at-low-speed winding make the motor a strong choice for dependable motion control.
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Product Description:
The E31NRHT-LNN-NS-00 is a hybrid stepper motor produced by Kollmorgen for the E Hybrid Stepper Motors series. This two-phase motor converts pulse commands from an indexer or microstepping drive into precise rotary motion. It is suitable for positioning tables, labeling heads, and light pick-and-place axes in industrial automation.
This model occupies a NEMA 34 frame and develops a holding torque of 337 oz-in, allowing the shaft to remain locked while the coils are energized. Motion is generated through a single magnetic stack and SIGMAX construction that concentrates magnetic flux for high low-speed torque. The rotor advances in 200 discrete steps per revolution, with each step covering 1.8 degrees at an accuracy of ±1.5%, so indexing errors remain minimal without feedback. The coils are wound for low-speed pullout performance and draw 5.4 A per phase. The copper path has a resistance of 0.29 ohms and an inductance of 2.5 mH, providing a time constant compatible with high-current microstepping drives. Four parallel leads exit through a standard lead-wire connection, simplifying the electrical hookup. Thermal management is supported by a 3.9 °C/W body-to-ambient thermal path, while the Class B insulation system permits the winding temperature to reach 130 °C without insulation breakdown.
The motor operates at ambient temperatures from -20 °C to +40 °C and accepts axial shaft loads up to 180 lb, while radial loads are limited to 35 lb for moderate belt tension or thrust-screw applications. A rotor inertia of 0.0083 oz-in-s² balances quick acceleration with resistance to resonance, while the total mass is 3.2 lb for manageable machine mounting. The 2.58-inch body length fits compact machinery envelopes, and a smooth shaft simplifies coupler installation with the NEMA mounting arrangement. Electrical insulation provides 100 MΩ of resistance and a dielectric rating of 340 VDC, supporting operation when the drive applies high chopping voltages.
