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M21NRXB-JNF-NS-00 by Pacific Scientific

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The M21NRXB-JNF-NS-00 is a Pacific Scientific stepper motor from the POWERMAX II M Motors series, featuring a NEMA 23 frame, 1.8-degree step angle and 200 full steps per revolution. With a 3.3 A phase current, 5.5 °C/W thermal resistance, ±1.5 % microstepping accuracy and operation from -20 °C to +40 °C, it delivers precise motion control and reliable performance.

Technical Specifications

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
5.5°C/Watt
Torque Range (standard)
79-111 oz-in / .55-.78 Nm
Winding Type
Unipolar and Bipolar

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