Product Description:

The CTM22NLF12NAA00 is a hybrid stepper motor produced by Kollmorgen within the CT Stepper Motors series and included in the Cool Torque Maximum Series. This two-phase unit converts digital pulse commands from microstepping drives into incremental motion for pick-and-place axes, small gantries, and indexing tables. By delivering discrete rotational steps, it reduces the need for closed-loop feedback in industrial automation where repeatable positioning is more important than continuous servo regulation.

The motor delivers holding and dynamic torque of 3.32 N-m in its CTM configuration, with a full-step increment of 1.8° per pulse. Electrical loading is limited to 1.2 A DC per phase, and each phase has 29 mH of inductance together with 8.40 Ω of resistance, which affects driver voltage requirements and current rise time. Four color-coded leads connect the coils in a bipolar arrangement, and the 2-stack lamination increases magnetic density within the Size 23 frame, which measures 5.7 cm. Rotor inertia is 0.000048 kg·m², while detent torque remains at 0.16 N-m to limit drift when the system is unpowered. Installation is through NEMA through holes, and no rear shaft extension is provided.

The smooth shaft diameter of 6.35 mm accepts couplings or pulleys and tolerates a radial load of 20 lbs (9 kg) at the center and an axial load of 50 lbs (23 kg) in either direction, allowing direct belt or gear attachment without additional bearings. A reinforced insulation system rated to 340 VDC protects the windings against inductive kickback. Phase insulation helps reduce core losses, and the total weight of 1.13 kg helps limit added mass on moving gantry axes. The round smooth shaft eliminates keyway stress, and the voltage and current combination is suitable for microstepping drives that follow the required step timing and resistance limits.