N31HRHL-LNK-NS-00 Pacific Scientific
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The Pacific Scientific N31HRHL-LNK-NS-00 is a stepper motor in the POWERPAC N Stepper Motors series with a NEMA 34 frame and a 3.38 inch square dimension. It features a holding torque of 4.6 Nm, 200 full steps per revolution, and operates with a 4 lead parallel configuration. This motor has a single straight key shaft, a standard construction type, and a heavy duty NEMA mounting style.
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Product Description:
The N31HRHL-LNK-NS-00 belongs to the POWERPAC N Stepper Motors series manufactured by Pacific Scientific. As a hybrid stepper motor, it produces incremental rotary motion for indexers, pick-and-place stations, and other open-loop positioning tasks in industrial automation. Its controlled angular movement supports applications that require repeatable positioning without a feedback device.
This model delivers a holding torque of 4.6 Nm, allowing the shaft to remain stationary when current is applied but no motion is commanded. Each electrical sequence advances the rotor by 1.8°, resulting in 200 steps per revolution. Positional deviation remains within ±3% of a commanded step, which supports consistent movement during repeated indexing cycles. The body has a length of 94 mm and uses a one-stack magnetic structure with a laminated rotor that reduces eddy-current loss while maintaining moderate inertia. Power is supplied through a conventional lead-wire exit, and the four-lead parallel configuration supports compatible series or parallel driver connections. The winding insulation is rated for 340 V DC, and its insulation resistance is 100 megohms. Standard Class B insulation materials accommodate a winding temperature rise of up to 100 °C.
The frame follows the NEMA 34 outline and measures 3.38 inches square, allowing installation with gearheads, couplings, and heavy-duty brackets made for the same mounting format. The motor has a single shaft with a straight key for positive engagement with compatible mechanical components. It is supplied without a shaft seal, so an external guard may be appropriate where the shaft could be exposed to liquid. The standard winding supports connection to conventional stepper drives through the installed lead wires. No onboard encoder is included because the motor is intended for open-loop operation with a suitable motion controller. Microstepping drives can regulate the phase current to provide smoother movement and reduced vibration between full-step positions.
