K42HLFM-LNK-NS-00 Pacific Scientific
Wake Industrial LLC is not an authorized distributor of this product.
The Pacific Scientific K42HLFM-LNK-NS-00 is a stepper motor from the K PowerPac Motors series, featuring a NEMA 42 heavy duty mounting type and a 4.325-inch square frame. It provides 28.2 Nm holding torque, has a single straight key shaft, and uses standard winding with an insulation voltage rating of 340 VDC. The motor employs enhanced SIGMAX construction and operates over a temperature range from -20°C to +40°C.
Internal Product Review
The K42HLFM-LNK-NS-00 is a Pacific Scientific stepper motor from the K PowerPac Motors series, built with enhanced SIGMAX construction and a heavy-duty NEMA mount. NEMA 42 framing and 28.2 Nm holding torque give the motor strong positioning capability for demanding motion applications. A 1.8° step angle highlights accurate, dependable stepping performance.
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Product Description:
The K42HLFM-LNK-NS-00 is a stepper motor manufactured by Pacific Scientific within the K PowerPac Motors series. Built on the large NEMA 42 frame, it translates discrete pulse commands from a drive into controlled incremental shaft movements. Machines use this motor to index packaging cutters, route printed circuit boards, and position material feeds in open-loop industrial automation.
The motor produces a holding torque of 28.2 Nm, allowing it to maintain position against static loads common in indexing presses and pick-and-place axes. Its step angle is 1.8°, so 200 full steps complete one mechanical revolution, enabling fine angular resolution without external encoders. The square frame measures 4.325 in. across, and the laminated rotor design reduces cogging while keeping inertia predictable for open-loop tuning. The heavy-duty NEMA mounting flange mates directly with gearboxes that share this pattern, and the magnetic circuit uses two stacks to increase flux density. Splash-proof wiring passes through a 1/2 in. NPSC conduit thread to a terminal board, and the 8-lead winding arrangement allows either series or parallel connection for different drive voltages. The insulation resistance is rated at 100 megohms to limit leakage current, and the motor operates within a temperature range of -20 °C to +40 °C. The standard winding, 150 mm body length, and ±1.5% step accuracy balance speed capability with positioning consistency, while the single shaft with a straight key simplifies coupling. There is no shaft seal, so the installation must prevent coolant washdown from contacting the bearings.
The enhanced SIGMAX construction increases magnetic flux at the pole tips, delivering higher torque density without changing the motor envelope. Electrical insulation withstands up to 340 VDC between the windings and housing, allowing the motor to connect to high-bus-voltage chopper drives while maintaining dielectric protection. Because the unit has no feedback device, motion verification depends solely on commanded step counts; this arrangement simplifies wiring and suits applications with well-characterized load dynamics.
