Product Description:

The K42HCHM-LNK-NS-00 is a stepper motor built by Pacific Scientific for the K PowerPac Motors series. Designed for open-loop positioning duties in packaging, printing, and material-handling cells, it relies on time-sequenced current pulses rather than feedback devices to hold or index loads. Its SIGMAX enhanced construction, laminated rotor, and two-stack internal geometry allow high torque from a compact square frame. A heavy-duty NEMA face simplifies attachment to industrial gearheads or adapter plates, while the single straight-key shaft transfers motion to belts, screws, or couplings.

The motor is built on a NEMA 42 frame, giving a 4.325-inch housing that matches standard American flanges. At rated current, the rotor can hold 28.2 Nm of static torque, letting the axis resist external loads when energized. Each electrical step moves the shaft 1.8°, so 200 steps equal one revolution. The ambient range of -20 °C to +40 °C allows operation in unheated areas without derating. The windings carry 340 Vdc insulation, which supports higher bus voltages while maintaining 100 MΩ resistance to ground.

The electrical interface is a System MS connector that routes the four phase conductors in a 4-lead parallel arrangement. This wiring choice halves phase resistance so higher-current drives can reach full torque at low speeds. Overall motor length is 150 mm, allowing installation where cabinet depth is limited. Mechanical accuracy is indicated by a step error of ±1.5 %, which is adequate for conveyors and labelers that tolerate fractional-degree deviation. The motor ships without a shaft seal, relies on standard class-B windings, and offers a single straight-key shaft. External gasketing is required where washdown protection is needed, and because there is no encoder, the drive must use open-loop current vectors to energize the windings.