Product Description:

The CTP31NLS22KAA00 is a two-phase stepper motor produced by Kollmorgen for the CT Stepper Motors series and offered in the Cool Torque Performance line, which emphasizes high torque output. Designed for open-loop positioning in indexing tables, conveyors, and small actuators, the unit arrives with six leads for flexible series or parallel wiring and a NEMA through-hole mount that mates directly to common machine flanges. A straight keyway shaft, a rear section without added devices, and a net weight of 1.8 kg help streamline mechanical integration. The lead configuration also gives the connected drive more flexibility when matching the winding connection to the available supply and the required operating range.

The motor uses a Size 34 / 8.5 cm frame and delivers a static holding torque of 3.3 N-m. Under bipolar excitation, it draws 2.2 A DC per phase at 7.1 V, with a phase resistance of 3.21 Ω and a winding inductance of 13 mH; these electrical values influence current rise time and mid-band behavior. Its two phases produce 200 full steps per revolution with a step accuracy of ±3%, while rotor inertia of 1.31 kg-cm² supports rapid acceleration. The motor’s thermal path is rated at 2.02 °C/W, and insulation resistance of 100 MΩ is paired with a 340 VDC withstand level. When driven in low-resistance bipolar mode, it can supply 4.0 N-m of dynamic torque, while 4.9 N-m is available from the CTM version.

Mechanical loading is supported by an 100 lbs (45 kg) axial capability in either thrust direction and a 65 lbs (29 kg) radial limit at the shaft center. Continuous service is allowed across −20 to +40 °C ambient temperatures, and a detent torque of 0.16 N-m helps resist drift when the drive is idle. Each command step advances the rotor by 1.8°, and the single-stack construction keeps the overall length compact while maintaining stiffness. This combination suits belt, screw, and direct-coupled loads that remain within the stated limits, especially where repeatable incremental motion is needed without added rear-mounted accessories.