Product Description:

The K42HLLK-LNK-NS-00 is a stepper motor manufactured by Pacific Scientific as part of the K PowerPac Motors series. Designed for open-loop positioning tasks, the unit uses enhanced SIGMAX construction to raise torque density while reducing detent ripple. It fits a NEMA 42 frame and uses a heavy-duty NEMA mounting flange for direct installation on machinery. Internally, a laminated rotor is arranged in two stacks and drives a single output shaft with a straight key for rigid coupling. A splashproof conduit feeds the terminal board, the motor uses a four-lead series wiring scheme, and the motor is supplied without a shaft seal.

With a holding torque of 28.2 Nm, the motor can maintain load position at standstill in properly matched applications. The housing uses a 4.325 in. square frame, which provides surface area for heat dissipation while keeping the footprint manageable. Electrical termination passes through a 1/2 in. NPSC pipe thread conduit, a common interface for sealed cable fittings and protected routing. The motor has an overall body length of 150 mm, which helps when checking available installation depth in compact equipment. An insulation resistance of 100 Megohms helps limit leakage current in humid or contaminated environments.

For dielectric strength, the windings tolerate up to 340 Vdc during high-potential testing. The rotor advances in discrete steps of 1.8°, and cumulative positional error remains within ±1.5%, which helps keep indexing motion predictable over repeated cycles. Continuous duty is allowed between −20 °C to +40 °C, so the motor can operate in typical indoor industrial conditions without added cooling hardware. This operating range supports steady use on machinery that requires reliable stepper performance throughout normal production shifts.