N31HREK-LNK-NS-00 Pacific Scientific
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The Pacific Scientific N31HREK-LNK-NS-00 is a stepper motor from the POWERPAC N Stepper Motors series and features a 3.38 inch square NEMA 34 frame with a heavy duty mounting type. It has a holding torque of 4.6 Nm, 200 full steps per revolution with a step angle of 1.8 degrees, and uses a single straight key shaft design. This motor offers a 6 lead regular leadwire connection style and has a standard laminated rotor construction.
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Product Description:
The N31HREK-LNK-NS-00 is a stepper motor produced by Pacific Scientific and supplied within the POWERPAC N Stepper Motors series. Designed for industrial automation, the motor translates pulse trains from a microstepping or full-step drive into incremental shaft movement, allowing machines to index tooling, feed material, or actuate valves without closed-loop electronics. By matching torque to load inertia through proper gearing, it offers a simple means of achieving repeatable positioning tasks on conveyors, packaging platforms, and assembly fixtures.
Its mechanical envelope follows the NEMA 34 frame standard, giving it a 3.38 in. square face that mates with heavy-duty NEMA pilot rings and bolt patterns. With a 1.8° step angle, the rotor advances in 200 full steps per revolution, permitting predictable indexing without closed-loop feedback. The single shaft has a straight key and is supported by a laminated rotor and a one-stack magnetic core, generating a holding torque of 4.6 Nm when both phases are locked. Standard construction and standard windings balance thermal rise against dynamic torque so the motor can run from midrange current-limited drives without excessive heating.
The body measures 94 mm in length, so it fits compact installations while preserving magnetic path depth. The insulation resistance is rated at 100 megohms, and the electrical insulation withstands up to 340 VDC to protect the coils against drive transients. For wiring flexibility, a six-lead harness exits through a regular lead-wire connection, enabling unipolar or bipolar wiring at the terminal block. Static positioning error stays within ±3%, providing repeatable angular accuracy for pick-and-place heads. Because the unit is built without a shaft seal, friction remains low. The motor does not include encoder feedback, and its standard construction keeps the assembly weight moderate.
