M21NRXC-LSN-NS-05 Pacific Scientific
Wake Industrial LLC is not an authorized distributor of this product.
The Pacific Scientific M21NRXC-LSN-NS-05 is part of the POWERMAX II M Motors series and features NEMA 23 frame size with a smooth shaft. This motor operates at a maximum speed of 3000 RPM, with a detent torque of 0.066 N·m and step accuracy of ±1.5 percent. It has Class B insulation, supports an operating temperature from -20°C to +40°C, and uses a regular leadwire connection style.
Internal Product Review
The M21NRXC-LSN-NS-05 is a POWERMAX II M step motor with a NEMA 23 frame and enhanced construction. A 1.8-degree step angle and ±1.5% step accuracy support consistent positioning in indexing and light automation duty. A maximum speed of 3000 RPM makes the unit a strong performer for fast, dependable motion control.
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Product Description:
The M21NRXC-LSN-NS-05 stepper motor is manufactured by Pacific Scientific as part of the POWERMAX II M Motors series. This NEMA-frame unit provides incremental, open-loop rotation so machine controllers can index tooling, conveyors, or vision stages without using shaft feedback. By converting pulse trains into proportional motion, it handles low-to-mid-torque positioning tasks in automated equipment.
The motor uses a single stack on a NEMA 23 frame, giving it a compact cross-section, while its overall body measures 52.3 mm long. Each electrical cycle advances the rotor by 1.8 degrees, so one revolution requires 200 commanded steps, a ratio that simplifies integer positioning algorithms. A maximum mechanical speed of 3000 rpm allows rapid moves when resolution can be traded for throughput. The two-phase type C winding generates the magnetic field, and the enhanced construction improves thermal paths around the stator. Standard lead wires terminate at a receptacle, supporting connections to panel-mounted terminal strips. The smooth shaft is supported by the standard rotor design, and the NEMA face pattern allows direct mounting to gearheads or brackets.
When the motor is not energized, a detent torque of 0.066 N·m helps resist light external disturbances between driven sequences. Positional repeatability is supported by a step accuracy of ± 1.5%, helping keep cumulative error within mechanical tolerance limits. Continuous operation is permitted from -20 °C to +40 °C, and a thermal resistance of 5.5 °C/W indicates the winding temperature rise relative to dissipated power. Class B insulation withstands a winding temperature of 130 °C. The insulation system also provides 100 megohms of resistance and withstands a 340 VDC dielectric test. These thermal and electrical properties support operation near the motor’s rated current while protecting the windings from excessive heat and electrical stress.
