E21NCHT-LNS-NS-02 Kollmorgen
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The Kollmorgen E21NCHT-LNS-NS-02 is a hybrid stepper motor in the E Hybrid Stepper Motors series with a NEMA 23 frame size and a frame diameter of 2.25 inches. It features SIGMAX construction, a smooth shaft, and a system MS connector with four lead parallel connection. The motor operates at a step angle of 1.8 degrees with 200 steps per revolution and offers maximum torque at low speed.
Internal Product Review
The E21NCHT-LNS-NS-02 is a Kollmorgen E Hybrid stepper motor built in a NEMA 23 frame with a System MS connector. A 1.8-degree step angle and ±1.5% step accuracy give motion systems consistent indexing and predictable positioning. Low-speed torque optimization and a smooth shaft make the unit an excellent fit for precise, reliable stepper service.
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Product Description:
The E21NCHT-LNS-NS-02 is a hybrid stepper motor produced by Kollmorgen in the E Hybrid Stepper Motors series. As an incremental actuator, it converts command pulses from indexers or microstepping drives into controlled rotary motion for positioning tables, indexing conveyors, and metering pumps in industrial automation. SIGMAX magnetic construction concentrates flux in the air gap, increasing low-speed torque while retaining the open-loop simplicity that makes stepper technology suitable for repeatable tasks that do not require feedback.
Its step angle is 1.8 degrees, so each command step advances the shaft by that mechanical angle. With 200 steps per revolution, the motor can deliver fine positional increments, and a step accuracy of ±1.5% keeps positioning error low enough for most pick-and-place operations. The square frame follows the NEMA 23 envelope and measures 2.25 inches across the mounting face, allowing installation in standardized brackets. Phase conductors terminate in a System MS connector, and four parallel leads provide low winding impedance so modern high-current drives can use the motor’s available holding torque. A single rotor-stator stack, a laminated rotor core, and a smooth shaft create a compact package that connects easily to couplings or timing pulleys. The motor has no feedback device, eliminating the need for encoder wiring in open-loop systems.
Electrical insulation supports durable operation, with resistance to ground remaining at 100 megohms. A dielectric withstand rating of 340 VDC protects the windings against high-voltage insulation stress. Continuous operation is permitted from -20 °C to +40 °C, covering most factory conditions without auxiliary cooling. Class B insulation materials tolerate internal temperatures up to 130 °C, helping protect the windings during sustained operation. The mounting flange supports rigid attachment to a machine frame, while the low-speed winding characteristics provide the static torque needed to hold loads in open-loop positioning systems.
