M21NRFC-LSS-HD-02 Pacific Scientific
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The Pacific Scientific M21NRFC-LSS-HD-02 is part of the POWERMAX II M Motors series and features a NEMA 23 frame size with a motor body length of 2.06 inches. This enhanced construction step motor uses a standard rotor, supports 200 steps per revolution at 1.8 degrees per step, and has an insulation class B with a 130°C rating. It is equipped with a 500 LPR TTL quadrature encoder and operates within a temperature range of -20°C to 40°C.
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Product Description:
The M21NRFC-LSS-HD-02 is a two-phase stepper motor produced by Pacific Scientific within the POWERMAX II M Motors series. It is intended for closed-loop positioning and speed regulation in industrial automation where medium torque and integral feedback are required. The motor combines a NEMA-conforming mounting face with an onboard optical encoder, allowing precise motion control without the need for an external feedback device.
The motor has a full-step angle of 1.8 degrees, which provides 200 discrete steps per revolution, and its step accuracy is rated at ±1.5 % for repeatable indexing. A NEMA 23 frame and matching NEMA mounting style allow it to fit standard 23-frame mounting patterns, while a standard rotor and enhanced construction help keep inertia moderate. Feedback is supplied by a 500 LPR encoder that operates up to 100 kHz, and its TTL quadrature plus index output is powered from 5 VDC ±10% with current draw of no more than 85 mA. The windings use a type C arrangement and terminate as eight flying leads in a regular lead-wire connection scheme, so the coils can be connected in either series or parallel. A single magnetic stack, Class B 130 °C insulation, and a 340 Vdc dielectric withstand rating complete the main electrical characteristics.
The motor uses a shaft support diameter of 30 mm and has a maximum body length of 2.06 in, which helps it fit compact machine layouts. Continuous operation is supported across an ambient temperature range of -20 °C to +40 °C, making it suitable for typical industrial environments. The winding insulation maintains at least 100 Megohms of resistance when tested at the specified voltage, which helps limit leakage current and protect signal quality from the encoder. Its compact size and integrated feedback make it suitable for indexers, small conveyors, and semiconductor tooling axes where accurate closed-loop stepper performance is needed.
Frequently Asked Questions about M21NRFC-LSS-HD-02:
Q: What type of connection style is provided on the M21NRFC-LSS-HD-02 motor?
A: The M21NRFC-LSS-HD-02 uses a regular leadwire connection style with 8 flying leads for wiring.
Q: What frame size and bearing size does the M21NRFC-LSS-HD-02 offer?
A: This model features a NEMA 23 frame size and a 30 mm bearing for standard mounting compatibility.
Q: What encoder option is available on the M21NRFC-LSS-HD-02 motor?
A: The M21NRFC-LSS-HD-02 includes a 500 LPR encoder that outputs TTL quadrature signals with index.
Q: How many steps per revolution does the M21NRFC-LSS-HD-02 motor have?
A: This motor operates at a step angle of 1.8 degrees, providing 200 steps per revolution.
Q: What are the insulation specifications of the M21NRFC-LSS-HD-02 motor?
A: The insulation class of this unit is Class B, rated for operation up to 130°C with 100 Megohms resistance.
