Product Description:

The K33HRFG-LNK-NS-00 is a stepper motor manufactured by Pacific Scientific in the K PowerPac Motors series. Within automated machinery, the motor receives pulse commands from a drive and advances its shaft by fixed increments, providing precise open-loop motion for conveyors, dispensers, and similar positioning tasks. The design omits onboard feedback devices and relies on the inherent detent characteristics of its magnetic stack to hold position at rest. Heavy-duty mounting and leadwire terminations let the motor fit easily into control cabinets and mechanical frames.

It is built on a NEMA 34 frame that measures 3.38 inches on each side, giving a compact cross section that still accepts large bearing sets. Each full step rotates the shaft by 1.8°, and cumulative error stays within ±1.5% for repeatable indexing. The magnetic circuit and winding geometry develop a holding torque of 15.6 Nm, so the shaft resists back-driving when power remains applied. Insulation is rated at 100 megohms with a 500 V test, and the Class B system withstands up to 340 Vdc between windings and frame. Continuous service is specified from -20 °C to +40 °C, allowing installation in unconditioned production floors without derating.

Mechanical depth is 171 mm, a length achieved by combining 3 stacks of laminated rotor and stator sections. Pacific Scientific applies its enhanced SIGMAX construction, which inserts high-permeability flux collectors at the ends of each stack to improve torque density without increasing current. Electrical connection is through an 8-lead regular leadwire bundle, permitting series or parallel phase wiring for either high-voltage or high-current drive topologies. The motor uses standard windings, has no shaft seal, and employs a single straight-key shaft. The heavy-duty flange suits indexing tables, packaging slides, and compact presses.