Product Description:

The H33NRHB-LDW-NS-00 is a hybrid stepper motor built by Kollmorgen within the H Hybrid Motors series. Designed for incremental positioning in packaging, indexing, and semiconductor handling, the unit converts pulsed drive currents into discrete angular motion without feedback devices. Its NEMA mounting pattern allows direct replacement of legacy stepper motors in industrial automation lines.

Electrically, the motor moves in increments of 1.8 degrees per command step, giving 200 full steps per revolution and a step accuracy of ±1.5%, so closed-loop sensors are often unnecessary. A static holding torque of 4.70 Nm secures loads when pulses stop, and it is produced while each phase draws the rated 5.4 A from the drive. Low coil impedance, shown by a phase resistance of 0.55 ohms and an inductance of 6.8 mH, allows rapid current rise for tight speed control. The thermal path from winding to case is 2.0 °C/W, and with ambient limits of -20 °C to +40 °C the motor can run in unconditioned plant areas. Three laminated stack sections and a mass of 3.45 kg balance torque density with inertia, while the smooth shaft helps minimize coupling wear.

Mechanical and insulation ratings match typical NEMA hardware. The housing corresponds to a NEMA 34 frame, so the 86 mm square face fits standard motor adapters. A maximum axial shaft load of 801 N and a radial limit of 156 N help protect the bearings during belt tensioning or thrust-type applications. Winding integrity is protected by a Class B, 130 °C insulation system that works with 100 MΩ insulation resistance and a 340 Vdc dielectric withstand. The motor uses regular leadwires, and four parallel leads simplify bipolar or parallel winding connections. The standard construction, NEMA mounting style, and smooth shaft support direct coupling to gearheads or lead screws.