Product Description:

The CTM32NLF73KAA00 is a hybrid stepper motor from Kollmorgen in the CT Stepper Motors series. It is intended for positioning and incremental motion in industrial automation, where pulse commands from open-loop or micro-stepping drives are converted into precise shaft movement for conveyors, indexers, and packaging axes. The motor is part of the Cool Torque Maximum range, so its magnetic design is aimed at producing high torque while limiting temperature rise during continuous duty. That combination makes it suitable for applications that need repeatable movement without the complexity of a servo feedback loop.

The electrical design uses two phases, each rated at 7.3 A, with a phase resistance of 0.41 Ω and a phase inductance of 2.7 mH. Those values affect current rise, drive matching, and the motor’s response during rapid indexing. A 1.8° step angle supports fine positioning with inherent step accuracy within ±3%. When energized, the rotor provides 1350 oz-in of holding torque, while the unpowered detent torque is 41 oz-in. Thermal performance includes a lamination stack heat path of 1.55 °C/W, and the two-stack construction helps raise power density. The insulation system maintains 100 megohms of resistance and withstands 340 VDC.

The motor mounts through NEMA 34 through-holes and uses a straight keyway shaft that accepts an axial load of 100 lbs in either direction, along with a radial load of 65 lbs at the shaft center. Each revolution is divided into 200 full steps, and the bipolar winding can develop up to 9.5 N-m of dynamic torque during acceleration bursts. Power is supplied through four pre-stripped leads, and the absence of a rear accessory leaves the back end clear for simpler cable routing. The motor has a mass of 6.6 lb, which adds useful thermal mass without making moving assemblies unnecessarily heavy. Rotor inertia is 0.0370 oz-in-s², which helps the axis start and stop quickly when the drive is tuned for short indexing moves.