Product Description:

The K42HRLM-LNK-NS-00 is a stepper motor built by Pacific Scientific for the K PowerPac Motors series. With a square frame and heavy-duty NEMA face mounting, the unit fits directly on indexing tables, packaging actuators, and positioning stages. It converts each electrical pulse into a fixed mechanical increment, letting the automation controller move a load without servo feedback and making it suitable for repeatable open-loop positioning tasks.

The motor delivers a holding torque of 28.2 Nm, allowing the shaft to remain stationary against significant static loads while the coils are energized. Each pulse advances the rotor by 1.8°, and cumulative positioning error is limited to ±1.5% of a full step, so indexing conveyors or valve actuators receive predictable travel. Standard windings operate safely from -20 °C to +40 °C, which suits typical factory conditions. Coil insulation withstands up to 340 VDC and has 100 megohms of resistance to ground, reducing leakage current when high-voltage microstepping drives are used. Because this version has no feedback device, position is inferred solely from commanded steps.

A 4.325 in. square frame matches common pilot dimensions for this motor size, while the housing length of 150 mm accommodates a long stator assembly. Enhanced SIGMAX construction concentrates magnetic flux in the laminated rotor, improving stiffness without raising inertia. Power enters through a regular lead-wire connection using a 4-lead series winding, which supports standard stepper drive wiring. The motor uses a single keyed shaft, and there is no shaft seal, so it should not be exposed to washdown conditions. Its magnetic structure uses two stacks for more uniform detent torque. All mounting dimensions comply with the NEMA 42 standard, allowing direct installation in equipment built for that frame size.