Product Description:

The CTM33NLF99KAA00 is a hybrid stepper motor built by Kollmorgen in the CT Stepper Motors series. Classified within the Cool Torque Maximum Series, this three-stack Size 34 (85 mm) unit converts discrete step commands into precise angular motion for positioning duties on CNC tables, labeling heads, and compact gantries. By delivering repeatable open-loop movement, the motor provides a practical alternative to servo axes while still meeting the speed and accuracy requirements found throughout industrial automation cells.

In electrical terms, the motor draws a rated phase current of 9.9 A/phase, a value that affects drive sizing and continuous copper loss. Its phase inductance of 1.6 mH and phase resistance of 0.24 Ω set the electrical time constant that limits slew rate and influences microstepping smoothness. A holding torque of 1930 oz-in keeps the rotor locked when energized, while a bipolar drive can develop 13.6 N·m of running torque in CTM versions for acceleration tasks. Each full step covers 1.8°, giving 200 positions per revolution with ±3% step accuracy, and the three-stack lamination height boosts flux without adding feedback hardware.

Mechanical limits support demanding loads. The shaft tolerates 100 lbs axially in either direction and 65 lbs radially at its center, helped by a straight keyway for rigid coupling. The frame, secured through NEMA through-hole mounts, weighs 9.3 lb and carries no rear accessories, which helps simplify enclosure layouts. Four lead connections streamline wiring. An insulation system rated for 340 VDC with 100 MΩ resistance guards against leakage, while 1.36 °C/W thermal resistance and 0.0555 oz-in-s² rotor inertia help keep temperature rise and settling time predictable. A 52 oz-in detent torque adds unpowered stability, and the enhanced series characteristic emphasizes maximum torque and efficiency.