M21NRXB-LSS-NS-03 Pacific Scientific
NEMA 23 137 Ounce Inch Stepper Motor

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The M21NRXB-LSS-NS-03 by Pacific Scientific is part of the PowerMax II M Motor Series. The M21NRXB-LSS-NS-03 is a NEMA mounting motor featuring a holding torque of 0.97 Nm and a rated current of 4.6 Amps DC. It also holds a phase resistance of 1.28 ohms +/- 10 % and phase inductance of 0.32 mH Typical .

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Product Description:

The M21NRXB-LSS-NS-03 M series stepper motor features SIGMAX technology and is marketed under the POWERMAX II brand name. The hybrid motor features a polymer end bell with threaded inserts. This end bell is responsible for running the cooler as well as offering high flexibility in mounting the brake and encoder. It also enhances the life of the encoder with its cooler operation. The device has receptacle style termination. It features an angular accuracy of +/-1.5% of a full step with no load. The unit encompasses an insulation resistance of 100 Megohms at 25°C and 500VDC. The product is a good choice for applications with special acceleration requirements. The motor can be dispatched globally through our trustworthy delivery team.

The stepper motor has a size of 2.25 inches across flats corresponding to NEMA 23 size. The motor implements NEMA mounting style with one stack for the rotor. It has a standard laminated rotor, a regular construction style and a winding type of B. The unit has a step angle of 1.8°C. The product has a holding torque of 1.79Nm with both phases on and parallel to each other. The device is capable of operating at an ambient temperature range of -20°C to +40°C. The life of the large bearings is 400% more when compared to that of standard 22mm bearings.

The hybrid motor can be mounted using four mounting screws placed at an equal distance from each other. The device has rotor inertia of 0.025kgm2 x 10-3. It features high-speed efficiency and excellent thermal dissipation. The product is a good option for table drives because of the constant load. When the unit is used with a flexible coupling, it can be used for producing improved torque. The motor has a high torque to inertia ratio and economical design.

Connection Style
Regular/leadwire
Construction Type
Enhanced
Encoder Option
No Feedback
Frame Size
NEMA 23
Insulation Class
Class B, 130°C
Insulation Resistance
100 Megohms
Insulation Voltage Rating
340 Vdc
Max Holding Torque
137 oz-in
Mounting Style
NEMA
Number of Connections
Receptacle
Number of Stacks
1
Operating Temperature
-20°C to +40°C
Parallel Inductance
1.0 mH
Parallel Phase Current
4.6 A
Parallel Phase Resistance
0.32 Ω
Phases
2
Rotor Type
Standard
Step Accuracy %
+/- 1.5 %
Step Angle
1.8 degrees
Steps per Revolution
200
Winding Type
B
  • M21NRXBLSS-NS-03
  • M21-NRXB-LSS-NS-03
  • M21NRXBLSSNS03

Frequently Asked Questions about M21NRXB-LSS-NS-03:

Q: What are some notable features of the M21NRXB-LSS-NS-03 stepper motor?

A: The M21NRXB-LSS-NS-03 stepper motor, marketed under the POWERMAX II brand name, incorporates SIGMAX technology for enhanced performance. With an angular accuracy of +/-1.5% of a full step and receptacle style termination, it's well-suited for applications with unique acceleration needs.

Q: What is the holding torque of the M21NRXB-LSS-NS-03 stepper motor?

A: With a winding type of B, the M21NRXB-LSS-NS-03 stepper motor offers a holding torque of 1.79 Nm when both phases are on and parallel to each other, ensuring robust performance in varied operational conditions.

Q: What mounting style does the M21NRXB-LSS-NS-03 stepper motor employ?

A: The M21NRXB-LSS-NS-03 stepper motor implements the NEMA mounting style with a single stack for the rotor, offering standardized compatibility for diverse applications.

Q: What temperature range can the M21NRXB-LSS-NS-03 stepper motor operate within?

A: The M21NRXB-LSS-NS-03 stepper motor demonstrates versatility, capable of operating in an ambient temperature range from -20°C to +40°C, ensuring adaptability in various working environments.

Q: How does the M21NRXB-LSS-NS-03 stepper motor contribute to improved thermal dissipation?

A: With high-speed efficiency and a rotor inertia of 0.025kgm² x 10-3, the M21NRXB-LSS-NS-03 stepper motor ensures excellent thermal dissipation, making it an ideal choice for sustained operations with constant loads.


Internal Product Review

  • ‘‘The M21NRXB-LSS-NS-03 is a POWERMAX II stepper motor with SIGMAX technology, ideal for applications needing special acceleration. Featuring NEMA 23 size, it offers high torque, cooler operation, and extended bearing life, making it a reliable choice globally.’’

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