M21NRXB-JNF-NS-00

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The M21NRXB-JNF-NS-00 stepper motor is manufactured by Pacific Scientific. It delivers 95 oz-in holding torque and operates within temperatures from -20°C to +40°C. With a phase current of 3.3 Amps and a Class B insulation rating, this motor provides precise motion control ideal for robotics, CNC, and industrial applications.

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Product Description:

The M21NRXB-JNF-NS-00 Stepper Motor is manufactured with a NEMA 23 frame size. It supports unipolar and bipolar windings. With a full step angle of 1.8 degrees, it delivers accurate and reliable rotational movement. This motor is built to operate efficiently in various industrial and automation environments.

This Pacific Scientific M21NRXB-JNF-NS-00 stepper motor provides 200 full steps across each revolution for exact positioning needs. In microstepping mode, the step accuracy reaches ± 1.5 % and full step mode maintains ± 3 %. This motor functions effectively throughout temperatures between – 20 °C to + 40 °C which accommodates various environmental settings. The thermal resistance when this model is mounted amounts to 5.5°C/Watt. This stepper motor has a Class B insulation rating which ensures operation up to 130 °C maximum temperature. This stepper motor has an insulation voltage of 340 VDC and an insulation resistance that measures 100 megohms. With a weight of 1.5 lbs (0.68 kg), this POWERMAX II M Motor becomes suitable for integration in small scale systems. The mechanical strength of this motor system reaches 20 lbs radial resistance (89 N) and 13 lbs axial resistance (58 N) to operate reliably under heavy loads.

The M21NRXB-JNF-NS-00 stepper motor delivers a holding torque of 95 oz-in (0.67 Nm) while performing operations to achieve stability. This motor can handle a phase current of 3.3 Amps DC with phase resistance set at 0.65 ohms. Its electrical characteristics support both low power usage and low heat emission functionality. This stepper motor finds its perfect use in robotics and CNC machinery for its ability to enable regulated movements. This stepper motor is available at Wake Industrial. We offers one year replacement warranty on the purchase of this motor.

Frame Size
NEMA 23
Full Step Angle
1.8 Degrees
Full Step Mode Accuracy
± 3%
Full Steps per Revolution
200 Full Steps
Microstepping Mode Accuracy
± 1.5%
Operating Temperature Range
-20 °C to +40 °C
Rated Current Applied
Windings at 130°C, motor in still air at 40°C
Rotor Configuration
1 rotor stack
Small Signal Inductance
Measured with impedance bridge at 1kHz, 1 amp
Thermal Resistance
Measured with motor hanging in still air
Thermal Resistance
5.5°C/Watt
Torque Range (standard)
79-111 oz-in / .55-.78 Nm
Winding Type
Unipolar and Bipolar

Frequently Asked Questions about M21NRXB-JNF-NS-00:

Q: What is the step accuracy of the Pacific Scientific M21NRXB-JNF-NS-00 stepper motor?

A: The M21NRXB-JNF-NS-00 offers a step accuracy of ± 1.5 % in microstepping mode. In full step mode, the step accuracy is maintained at ± 3 %.

Q: How much torque can the M21NRXB-JNF-NS-00 motor handle?

A: The Pacific Scientific M21NRXB-JNF-NS-00 stepper motor delivers a holding torque of 95 oz-in (0.67 Nm). This ensures precise and reliable rotational movement for demanding applications.

Q: What is the operating temperature range for the M21NRXB-JNF-NS-00 stepper motor?

A: The M21NRXB-JNF-NS-00 functions effectively in temperatures from -20 °C to +40 °C. This broad range accommodates diverse environmental conditions for consistent performance.

Q: How does the M21NRXB-JNF-NS-00 motor handle heavy loads?

A: The M21NRXB-JNF-NS-00 has a mechanical strength of 20 lbs radial resistance and 13 lbs axial resistance. It is built to perform reliably under heavy load conditions.

Q: What are the electrical characteristics of the M21NRXB-JNF-NS-00 stepper motor?

A: The M21NRXB-JNF-NS-00 motor handles a phase current of 3.3 Amps DC and features a phase resistance of 0.65 ohms. These characteristics enable low power consumption and minimal heat emission.


Internal Product Review

  • ‘‘The M21NRXB-JNF-NS-00 stepper motor features 200 full steps per revolution, a holding torque of 95 oz-in, and operates efficiently in a range of -20°C to +40°C. It is designed for low heat emission. It provides accurate positioning in robotics and CNC machinery with an insulation rating of Class B.’’

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