Product Description:

Pacific Scientific manufactures the N43HRLN-LDK-NS-00, a stepper motor in the POWERPAC N Stepper Motors series. Intended for indexing tables, gantry axes, and packaging equipment, it converts discrete pulses from a drive into fixed angular increments without closed-loop feedback. The motor uses standard construction practices, employs a laminated rotor, and has a double shaft with a straight key so loads can be coupled on either end while timing pulleys or encoders remain aligned to the keyway.

The motor uses a 4.325 in. square frame, which is classified as NEMA 42, and it mounts through heavy-duty flange holes that can withstand high radial loads. It provides 200 full steps per revolution, giving a basic resolution that supports open-loop positioning routines. A holding torque of 30.6 Nm helps prevent back-driving when the drive is energized but stationary, which is useful for vertical loads in conveyors or lifters. Motion precision comes from the incremental advance of 1.8° per step, which can reduce the need for mechanical reducers in many light-duty to medium-duty axes. Lead wires exit the housing in a regular four-lead series configuration, matching standard bipolar drives, and the lack of feedback components keeps wiring simpler.

The windings have an insulation resistance of 100 Megohms at ambient conditions and can tolerate up to 340 Vdc before dielectric breakdown occurs. The 201 mm body length and three-stack stator increase thermal mass, allowing steady operation without forced cooling. Step placement remains within ± 3% of the commanded position, so cumulative error stays low across multiple revolutions in pick-and-place or labeling systems. The design does not include a shaft seal, so the installation area should remain free of liquid contaminants, and the standard winding supports common bipolar drive currents.