Product Description:

The CTM22NLF50NAA00 is a two-phase stepper motor manufactured by Kollmorgen for the CT Stepper Motors series under the Cool Torque Maximum family. By advancing its rotor in discrete increments, the unit supplies repeatable open-loop position control for automated dispensers, indexing conveyors, and valve actuators used throughout industrial automation. Its design is well suited to applications that need precise step positioning in a compact motor package.

Mechanical loading begins with an axial capacity of 50 lbs in either direction and a radial limit of 20 lbs at the shaft center, figures that help protect the round smooth shaft from premature bearing wear. The NEMA Size 23 frame is built in a 2-stack length so torque density is increased without enlarging the mounting footprint, and the through-hole threads follow the NEMA pattern for straightforward bracket attachment. Four color-coded leads provide the electrical interface, and the windings draw 5.0 A per phase through a 0.52 Ω ±10% resistance. A low 1.6 mH inductance allows rapid current rise, while the insulation system withstands 340 VDC and maintains 100 MΩ to ground. Under bipolar drive, the rotor develops a static holding torque of 470 oz-in and a dynamic running torque of 3.32 N·m, all delivered in 200 full-step increments of 1.8° with two energized phases.

Torque smoothness between commanded positions is aided by a detent value of 22 oz-in, allowing light loads to hold position when the drive is inactive. The coil set is optimized for a rated supply of 2.6 VDC, and heat generated at that operating point leaves the frame at a rate of 2.62 °C/W. A low rotor inertia of 0.0068 oz-in-s² supports fast acceleration and complements the Enhanced Series goal of high torque and efficiency. No rear accessories are fitted, so couplings can seat directly against the body, and the two-phase architecture remains unobstructed by additional hardware.