M21NRFC-LSS-HD-02 Pacific Scientific
Wake Industrial LLC is not an authorized distributor of this product.
Wake Industrial LLC is not an authorized distributor of this product.
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.
Internal Product Review
The M21NRFC-LSS-HD-02 is a Pacific Scientific POWERMAX II M stepper motor with a NEMA 23 frame and a 1.8-degree step angle. Enhanced construction and Class B 130°C insulation support dependable operation in demanding motion systems. The 500 LPR encoder with TTL quadrature plus index makes this unit a strong choice for accurate positioning.
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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.
