Product Description:

The H33NRFA-LNN-NS-00 is a hybrid stepper motor produced by Kollmorgen within the H Hybrid Motors series. By turning discrete command pulses into controlled angular motion, it provides accurate position control for indexing tables, packaging lines, and automated assembly stations. The unit follows standard construction practices, uses a regular lead-wire connection with eight leads, and is built with three stator stacks for higher torque density. A NEMA mounting interface and a smooth shaft simplify mechanical integration with couplings, pulleys, or direct-drive loads.

With a step angle of 1.8 degrees, the motor advances in fixed increments, yielding 200 full steps per revolution for predictable positioning. Step accuracy stays within ±1.5%, so cumulative error remains low on multi-turn moves. The static holding torque reaches 666 oz-in, allowing the shaft to resist back-driving when power is removed. A rotor inertia of 0.025 oz-in-s² supports rapid starts and stops without excessive settling time. The frame conforms to NEMA 34 dimensions, and the 3.38-inch body diameter with a 5.06-inch maximum length fit typical motion spaces. Thrust capacities are rated at 180 lb axially and 35 lb radially to protect the bearings. Overall mass is 7.6 lb, and a thermal resistance of 2.0 °C/W describes the temperature rise per watt lost during continuous duty.

The electrical insulation system is rated Class B 130 °C, allowing the windings to endure high internal temperatures without breakdown. To limit leakage currents, the design maintains 100 megohms of resistance between conductive parts, and it tolerates up to 340 Vdc across the coil without flashover. Specified ambient limits of -20 °C to +40 °C keep thermal expansion and lubricant viscosity within safe ranges. Factory-installed conductors exit the housing as 12-inch minimum #22 AWG leads, giving enough length for routing inside enclosures.