Product Description:

The K31HLLG-LNK-NS-01 is a stepper motor produced by Pacific Scientific for the K PowerPac Motors series. It accepts open-loop pulse commands and advances the shaft in fixed increments, serving feeders, labelers, and compact gantry stages that need repeatable positioning without feedback. SIGMAX construction raises magnetic flux, while the laminated rotor and straight-key shaft maintain stiffness during rapid starts. Heavy-duty NEMA mounting points let the unit bolt directly to standardized gearboxes and machine plates.

Built on the NEMA 34 frame standard, the motor occupies a 3.38-inch square envelope that simplifies interchange with other motion products of the same size. At standstill, it produces up to 5.9 Nm of holding torque, allowing fixtures to remain locked without mechanical brakes when current is applied. Each electrical step advances the rotor by 1.8°, so 200 full steps complete one revolution, a geometry that balances resolution with detent strength. The windings are insulated for a maximum working potential of 340 VDC, and their resistance exceeds 100 MΩ to minimize leakage paths. The motor operates in ambient temperatures from -20 °C to +40 °C, covering most factory environments without supplemental conditioning.

Electrical terminations follow a 4-lead series arrangement, providing flexibility for either series or parallel coil excitation when paired with two-phase drivers. Conductors exit through a conduit with a 1/2 in. NPSC pipe thread, which forms a splash-proof path to the internal terminal board, and the shaft seal further limits liquid ingress. Over the full travel, cumulative positioning error stays within ±1.5%, aligning with the accuracy requirements of indexers and light machining stages. The housing length is 94 mm, achieved with a single-stack stator, so the motor can fit behind panels where axial space is limited while still supporting the standard winding configuration and open-loop operation.