Product Description:

The CTP31NLF72KAA00 stepper motor is built by Kollmorgen within the CT Stepper Motors series and is part of the Cool Torque Performance Series line. It is a size 34 unit with a single-stack rotor core that fits standard NEMA through-hole patterns, so existing brackets and bearing plates do not need alteration. Used in pick-and-place heads and small gantries, the motor delivers incremental motion through full-step commands, allowing PLCs to index loads accurately without a feedback device.

The windings are rated for a continuous supply of 7.2 A DC, and this current works with a terminal voltage of 2.4 VDC to keep the electrical design compact. Internal copper presents only 0.34 Ω of phase resistance, limiting I²R losses, while a phase inductance of 2.3 mH supports fast current rise during high-speed starts. Each electrical step equals a mechanical increment of 1.8°, so 200 full steps complete one revolution and simplify pulse scaling inside motion controllers. The 64.5 mm body length contains a rotor inertia of 1.31 kg-cm² that balances torque output and settling time. Four pre-terminated leads route power, and the dielectric system withstands 500 VAC for one second while maintaining 100 MΩ insulation resistance against a 340 VDC potential.

The motor uses a straight-keyed 12.7 mm shaft that withstands an axial thrust of 100 lbs in either direction and a radial load of 65 lbs at the shaft center. Static holding friction contributes only 0.16 N·m of detent torque, so the motor can micro-step smoothly at low speeds. Overall mass is 1.8 kg, which helps keep moving assemblies light while heat is dissipated through a 2.02 °C/W thermal path. A 73.03 mm pilot diameter centers the frame for accurate mounting on aluminum plates or steel weldments. This layout supports rigid installation without additional adapters.