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E21NCHT-LNN-Ns-00 Kollmorgen

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The Kollmorgen E21NCHT-LNN-Ns-00 is part of the E Hybrid Stepper Motors series and features a NEMA 23 frame size with a 2.25 inch diameter. This motor has a 1.8 degree step angle, provides 200 steps per revolution, and uses a smooth single shaft with SIGMAX construction. It supports a system MS connector for connection, operates in temperatures from -20°C to +40°C, and offers insulation rated at Class B, 130°C with a resistance of 100 Megohms.

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Product Description:

The E21NCHT-LNN-Ns-00 hybrid stepper motor is produced by Kollmorgen as part of the E Hybrid Stepper Motors series. This two-phase unit translates pulse commands from a microstepping drive into incremental torque, providing open-loop positioning for index tables, labeling heads, or small gantries in industrial automation. Its hybrid construction combines permanent-magnet and variable-reluctance technologies, providing finer resolution than traditional permanent-magnet stepper motors without requiring a closed-loop servo system.

Its frame diameter of 2.25 in provides a compact envelope for installations with limited space. Each commanded step rotates the shaft by 1.8 degrees, producing 200 full steps per revolution, while motion accuracy remains within ±1.5%. SIGMAX construction channels magnetic flux toward the rotor teeth, supporting high torque at low speeds. Thermal protection is provided by a 130 °C Class B insulation system rated for a 340 VDC dielectric withstand test and 100 megohms of insulation resistance. The motor operates within a temperature range of -20 °C to +40 °C, allowing use in installations without active motor cooling when ambient conditions remain within these limits.

The integral System MS connector presents the motor phases in a four-lead parallel configuration, supporting direct connection to a compatible stepper drive. A single magnetic stack and laminated rotor help reduce detent torque and improve damping during microstepping operation. Installation uses the NEMA 23 bolt pattern, allowing the motor to fit mounting surfaces prepared for that standard frame size. Mechanical output is provided through a single smooth shaft, which accepts clamping couplings without requiring a keyway or flat. No shaft seal is supplied, so the installation should protect the bearing interface from dust, liquids, and other contaminants. Couplings can seat directly against the shaft shoulder, helping maintain consistent alignment between the motor and the driven mechanism.

Connection Style
System MS Connector
Feedback
No Feedback
Frame Diameter
2.25 in
Frame Size
NEMA 23
Insulation Class
Class B, 130°C
Insulation Resistance
100 Megohms
Insulation Voltage Rating
340 Vdc
Motor Construction
SIGMAX construction
Mounting Style
NEMA
Number of Connections
4 lead parallel
Number of Stacks
1
Operating Temperature
-20°C to +40°C
Rotor Type
Laminated
Shaft Configuration
Single
Shaft Modifications
Smooth Shaft
Shaft Seal
None
Step Accuracy %
+/- 1.5 %
Step Angle
1.8 degrees
Steps per Revolution
200
Winding Type
Max. torque at low speed

Frequently Asked Questions about E21NCHT-LNN-Ns-00:

Q: What type of electrical connection does the E21NCHT-LNN-Ns-00 stepper motor have?

A: The E21NCHT-LNN-Ns-00 uses a System MS Connector for its electrical connection.

Q: What frame size and diameter does the E21NCHT-LNN-Ns-00 stepper motor use?

A: This model features a NEMA 23 frame size with a 2.25 inch diameter housing.

Q: What are the step angle and steps per revolution specifications of the E21NCHT-LNN-Ns-00?

A: The E21NCHT-LNN-Ns-00 operates with a step angle of 1.8 degrees, achieving 200 steps per revolution.

Q: Does the E21NCHT-LNN-Ns-00 stepper motor include feedback?

A: The E21NCHT-LNN-Ns-00 stepper motor is designed without feedback capability.

Q: What is the shaft configuration for the E21NCHT-LNN-Ns-00 stepper motor?

A: This motor uses a smooth, single shaft without a shaft seal.


Internal Product Review

  • ‘‘The E21NCHT-LNN-Ns-00 is a Kollmorgen E Hybrid stepper motor with a NEMA 23 frame and a System MS connector. From a motion-control standpoint, the 1.8-degree step angle and 200 steps per revolution support precise, consistent positioning. SIGMAX construction and winding optimized for maximum torque at low speed make this unit a strong choice for demanding indexing applications.’’

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