M21NSXA-LNN-NS-02 Pacific Scientific
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The Pacific Scientific M21NSXA-LNN-NS-02 is an enhanced construction stepper motor from the POWERMAX II M Motors series, featuring a NEMA 23 frame size and single smooth shaft configuration. It operates with a step angle of 1.8 degrees and 200 steps per revolution, and is rated for insulation class B at 130°C with a maximum insulation voltage of 340 VDC.
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Product Description:
The M21NSXA-LNN-NS-02 hybrid stepper motor is produced by Pacific Scientific as part of the POWERMAX II M Motors series. Intended for precise indexing, the motor converts pulse trains from drives or PLC outputs into controlled incremental motion for conveyors, labelers, and miniature gantry axes. Its enhanced construction type increases mechanical stiffness, and the NEMA mounting style lets the frame bolt directly to standardized 23-frame brackets. By eliminating a feedback device, the unit provides a simple motion source for moderate-duty automation tasks that still require repeatable positioning.
The motor occupies a NEMA 23 frame, giving a 56 mm square front face that matches common brackets. Each excitation step turns the rotor by 1.8 degrees, and a total of 200 steps per revolution means one command pulse equals 0.005 turns, which simplifies angle calculation. Position error is held within ± 1.5 %, which is suitable for indexing tables and syringe pumps. The electromagnetic circuit uses a 2-phase arrangement that follows winding type A, allowing standard Pacific Scientific drives to energize the coils without additional setup changes. One magnetic stack minimizes axial length, while the standard rotor design works with a single smooth shaft to reduce bearing side load. Wiring terminates on a receptacle, and no encoder is installed.
The insulation system is rated Class B, 130°C, so the windings can tolerate continuous operation at elevated temperatures without premature degradation. Coil-to-frame resistance measures 100 Megohms, and the assembly withstands up to 340 Vdc test potential, providing margin over typical low-voltage stepper drives. The motor can operate at ambient temperatures from -20°C to +40°C, which supports use in unconditioned plant areas. Enhanced construction improves heat transfer from the single stack, and resin-impregnated windings help stabilize the A-type coils during thermal cycling. The smooth, single-ended shaft simplifies coupling alignment, while the NEMA receptacle connection makes cable attachment straightforward.
Frequently Asked Questions about M21NSXA-LNN-NS-02:
Q: What is the step angle specification for the M21NSXA-LNN-NS-02 motor?
A: The M21NSXA-LNN-NS-02 motor features a 1.8-degree step angle, providing precise positioning for each movement.
Q: Does the M21NSXA-LNN-NS-02 motor come with an encoder for feedback?
A: This model does not include an encoder or other feedback device for position monitoring.
Q: What frame size does the M21NSXA-LNN-NS-02 motor utilize?
A: The frame size for the M21NSXA-LNN-NS-02 is standardized at NEMA 23.
Q: What type of shaft configuration does the M21NSXA-LNN-NS-02 have?
A: The shaft on this motor is smooth and designed in a single configuration.
Q: What is the allowable operating temperature range for the M21NSXA-LNN-NS-02?
A: This motor operates safely within temperatures ranging from -20°C to +40°C.
