Product Description:

The CTP20NLS09NAA00 is a hybrid stepper motor manufactured by Kollmorgen for the CT Stepper Motors series. Designed for incremental positioning in packaging, electronics assembly, and light material-handling equipment, it converts pulse commands from indexers or microstep drives into measured rotary motion without feedback. Its hybrid stepper construction supports predictable open-loop movement, making it suitable for indexing tasks that need repeatable starts, stops, and short travel increments.

Its frame corresponds to size 23 (5.7 cm), and the housing length is 41.2 mm, producing a 0.45 kg assembly suited for tight machine compartments. When driven in bipolar mode, the motor develops 0.71 N·m of holding torque with a rated phase current of 0.87 A DC. Six factory-terminated leads allow full-, half-, or series connections, giving flexibility when matching the motor to different drive requirements. Phase inductance is 12 mH, and coil resistance is 10.5 Ω, which helps keep current behavior and copper losses predictable. Through the round smooth shaft, the unit supports axial thrust up to 50 lbs (23 kg) in either direction, and the NEMA through-hole mounting pattern supports straightforward integration with gearheads or brackets.

Dynamic performance is supported by a rotor inertia of 0.000018 kg·m², enabling rapid starts and stops with limited overshoot when 200 full steps per revolution are commanded. Heat generated in the windings leaves the stator path at 3.99 °C/W, allowing rated operation without auxiliary cooling under normal installation conditions. The winding has a dielectric withstand rating of 340 VDC. A 1.8° mechanical step angle sets the motor's basic position increment, and microstepping can divide that movement into smaller commanded steps. The shaft tolerates a 20 lbs (9 kg) radial load at center, and the short-stack body with a rear face free of hardware leaves room for encoder or brake addition when the machine layout calls for it. This layout supports compact motion axes that need repeatable indexing without a large motor envelope.