Product Description:

The K31HRLG-LDK-NS-00 is a stepper motor manufactured by Pacific Scientific and supplied within the K PowerPac Motors series. As a two-phase, open-loop positioning device, it advances a fixed increment each time the drive issues a command pulse, supporting indexers, incremental feeds, and light conveyor stations in industrial automation. The motor integrates a laminated rotor, a double shaft with a straight key, regular leadwires in a 4-lead series arrangement, and heavy-duty NEMA mounting provisions. Its compact frame and single-stack core allow installation where space is limited and repeatable step performance is required.

The motor delivers 5.9 Nm of static holding torque, enabling the load to remain locked when pulses stop. Each control step advances the rotor by 1.8°, giving 200 full steps per revolution for predictable indexing. A 3.38 in. square frame matches NEMA 34 face dimensions, while the overall body length is only 94 mm, reducing required installation depth. Positional error is limited to ±1.5%, helping maintain repeatability throughout the motion profile. The permitted ambient range of -20 °C to +40 °C covers most factory floor conditions without external cooling.

In electrical terms, the windings are rated for 340 Vdc insulation and withstand leakage paths greater than 100 Megohms, so the motor can be used on drives that deliver high bus voltages without compromising dielectric integrity. The enhanced SIGMAX construction improves magnetic flux density in the stator teeth, allowing the single-stack core to reach its torque value with standard current levels through the existing leadwire set. The lack of an internal shaft seal reduces friction, and the motor has no feedback device, which simplifies cabling in applications where position is verified by the controller rather than a built-in encoder.