Product Description:

The CTM31NLS35KAA00 is a hybrid stepper motor built by Kollmorgen for the CT Stepper Motors series and included in the Cool Torque Maximum Series. Its hybrid construction supports accurate incremental motion with repeatable positioning in compact automation systems. This design provides high torque and thermal efficiency for indexing tables, labeling equipment, and other motion tasks that tolerate open-loop control while still demanding precise step resolution.

Electrically, the motor can develop up to 4.9 N·m of pull-out torque when excited in bipolar configuration, giving it the force to accelerate moderate loads without stalling. The windings are rated for a continuous phase current of 3.5 A, so the selected driver must support that current level. Coil insulation withstands up to 340 VDC, providing dielectric margin for systems that use rectified mains supplies or higher bus voltages. The body follows a Size 34 frame, which is about 85 mm square, allowing direct interchange with common NEMA 34 mounts and gearheads in existing machine layouts. For wiring flexibility, the design uses a unipolar topology, allowing single-ended or bipolar series drive modes by rearranging the flying leads.

Mechanically, the shaft accepts up to 100 lbs of axial thrust in either direction and tolerates a radial overhung load of 65 lbs at the centerline. These load limits support pulleys, couplings, or belt tension applied directly to the motor. Connection to the drive is through six color-coded leads, which simplifies wiring without specialized connectors. The motor uses NEMA through-hole mounting, and the straight keyway shaft profile improves torque transmission to couplers while resisting slip. Additional notes include a single-stack lamination for shorter axial length, no rear accessory housing, and clearly marked phase conductors in black, orange, red, and yellow.