Product Description:

The P21NSHS-LNS-NS-02 is a two-phase hybrid stepper motor manufactured by Pacific Scientific within the POWERMAX II P Motors series. As a NEMA 23 unit, it converts digital pulse trains from indexers or motion controllers into incremental rotary movement for precise positioning in automated pick-and-place equipment, labeling heads, and small conveyors. Its single-stack construction keeps the overall length compact, and the absence of an onboard encoder leaves position verification to the host controller when open-loop operation is sufficient.

With a fundamental step angle of 1.8 degrees, the motor yields 200 discrete positions per revolution, and the stated ±1.5% accuracy limits cumulative error during multi-turn moves. Because two phases are energized through a four-lead parallel connection, copper loss remains moderate while the Class B, 130 °C winding insulation tolerates sustained heating. The windings withstand up to 340 Vdc dielectric test voltage, and the neodymium-iron-boron rotor provides high flux density for elevated torque per frame. Operation is specified from -20 °C to +40 °C, and a rotor inertia of 0.000010 kg·m² helps the load accelerate quickly with controlled dynamic response.

Mechanically, the motor follows the NEMA 23 outline, with a housing width of 2.25 inches and a flange that accepts a 30 mm bearing to support axial loads from couplings or pulleys. Face mounting uses a 2.625 in bolt circle with 0.200-inch clearance holes, and a pilot measuring 1.500 inches in diameter by 0.055 inches in depth supports concentric alignment. The motor uses a single-shaft configuration that simplifies coupling, and the standard rotor keeps the layout straightforward. An insulation resistance of 100 megohms adds protection against leakage current in humid environments, and the mounting hardware follows the NEMA pattern for standard bracket alignment.