Product Description:

The H33NREC-LDN-NS-00 is a hybrid stepper motor manufactured by Kollmorgen within the H Hybrid Motors series. This standard-construction unit has a 1.8-degree step angle and converts digital pulse streams from motion controllers into precise incremental rotation for positioning tasks in automated machinery. Its internal design combines permanent-magnet and variable-reluctance principles, giving it the detent torque and step accuracy needed for indexing conveyors, pick-and-place heads, and other mid-power axes.

Each phase draws 7.8 A, so the drive electronics must supply that continuous current to reach rated torque. Phase resistance of 0.29 Ohms and inductance of 1.6 mH influence current rise and resonance behavior during operation. The insulation system is rated for 340 Vdc and Class B operation, while insulation resistance to ground is 100 MΩ. A thermal path of 2.0 °C/Watt links the stator to ambient air, helping predict housing temperature from winding losses. Six leads in a standard leadwire bundle allow series or parallel wiring, and the three-stack rotor provides 200 steps per revolution with ±1.5% accuracy across an ambient range of -20 °C to +40 °C.

The motor uses the NEMA 34 frame standard and has a body diameter of 3.38 in, which supports installation on equipment designed for this mounting pattern. A smooth shaft delivers up to 466 oz-in of holding torque at standstill, and the rotor inertia of 0.025 oz-in-s² supports frequent start-stop motion with limited overshoot. The bearings support axial loads up to 180 lb and radial loads up to 35 lb, which suits belt-driven or geared arrangements. The motor weighs 7.6 lb, and the NEMA flange allows direct mounting to linear stages or gearheads without additional adapters.