E31NRHB-LNN-NS-00 Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen E31NRHB-LNN-NS-00 is part of the E Hybrid Stepper Motors series and features a NEMA 34 frame size with a body length of 2.58 inches. This motor provides a holding torque of 316 oz-in and operates with a rated current per phase of 5.9 amps. It is designed with a smooth shaft that is 0.5 inches in diameter and weighs 3.2 pounds.
Internal Product Review
The E31NRHB-LNN-NS-00 is a Kollmorgen E Hybrid stepper motor built in a NEMA 34 frame with SIGMAX construction. A holding torque of 316 oz-in and 200 steps per revolution give the motor strong indexing capability and consistent positioning. Class B 130°C insulation and 100 Megohms insulation resistance support dependable operation, making the motor a very capable choice for precise motion service.
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Product Description:
The E31NRHB-LNN-NS-00 is a hybrid stepper motor from Kollmorgen’s E Hybrid Stepper Motors series. As a two-phase, brushless positioning device, it indexes mechanical loads in fixed angular increments so that automated machinery can achieve repeatable linear or rotary motion without closed-loop feedback. Its SIGMAX magnetic construction, smooth 0.500-inch shaft, and NEMA mounting face allow the unit to integrate directly with couplings, pulleys, or gear reducers in packaging lines, pick-and-place heads, or small gantry axes.
The motor occupies a NEMA 34 frame, giving it a 3.38-inch frame width and a bolt pattern compatible with common 86 mm drive brackets. A holding torque of 316 oz-in resists back-driving while the motor is energized, supporting vertical or load-locking applications. Each phase draws 5.9 A, so the drive electronics must supply sufficient peak current while keeping conductor losses within the Class B insulation limit. Motion resolution is set by the 1.8-degree full-step angle, producing 200 discrete steps per revolution. Microstepping controllers can subdivide that increment further to reduce vibration and improve in-position accuracy.
Thermal behavior is characterized by a dissipation factor of 3.9 °C/W, which helps predict winding temperature rise at the specified power loss. The electrical time constant is influenced by a phase inductance of 1.7 mH and a phase resistance of 0.24 ohms. These values affect the current slew rate and the voltage margin that the drive must provide at high stepping frequencies. Dynamic response also depends on the rotor inertia of 0.0083 oz-in-s², which permits quick acceleration without excessive torque demand. A total mass of 3.2 lb aids heat dissipation while remaining light enough for moving-axis installations. The motor also has an insulation resistance of 100 MΩ, a dielectric strength of 340 VDC, and an operating temperature range of -20 °C to 40 °C for use in standard industrial enclosures.
