E31NCHT-LNW-NS-00 Kollmorgen
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The Kollmorgen E31NCHT-LNW-NS-00 is a hybrid stepper motor from the E Hybrid Stepper Motors series with a NEMA 34 frame size and mounting style. It delivers a holding torque of 2.38 Newton-meters and has a phase current rating of 5.4 Amps. The motor features SIGMAX construction, an axial shaft load of 801 Newtons, and insulation class B rated to 130°C.
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Product Description:
The E31NCHT-LNW-NS-00 hybrid stepper motor is built by Kollmorgen for the E Hybrid Stepper Motors series. As a two-phase incremental motion device, it converts digital pulse trains into precise shaft rotation, making it suitable for indexing tables, packaging axes, and semiconductor handling equipment. The motor delivers constant incremental motion without position feedback, simplifying drive electronics in many automation platforms. Its open-loop operation allows the shaft position to follow commanded steps when the applied load remains within the available torque range.
Electrical performance centers on a holding torque of 2.38 N-m, achieved through Kollmorgen’s SIGMAX rotor-stator geometry and a single magnetic stack. Each phase is energized at 5.4 A, and the copper windings have a phase resistance of 0.29 ohms and a phase inductance of 2.5 mH. These electrical values determine the drive voltage requirements and current rise time during step commands. With a nominal step angle of 1.8 degrees, the motor generates 200 full steps per revolution with a step accuracy of ±1.5%, while a low rotor inertia of 0.0083 oz-in-s² permits rapid acceleration. The winding is optimized for maximum torque at low speed, and the four-lead parallel connection supports bipolar operation with a compatible stepper drive. The motor uses a standard NEMA 34 frame for mounting in compatible machinery.
The smooth shaft tolerates an axial load of 801 N and a radial load of 156 N, allowing direct coupling to gears or pulleys. Heat generated by the windings is conducted through the housing with a thermal resistance of 3.9 °C/W. The unit can operate from -20 °C to +40 °C without derating. Its Class B, 130 °C insulation works with an insulation resistance of 100 MΩ and a dielectric withstand voltage of 340 VDC to protect against electrical breakdown. The mounting face follows the NEMA pattern, while a System MS connector provides the electrical interface. The smooth shaft accommodates clamp-style couplings used to transfer torque to connected machine components.
