Product Description:

The CTP21NLF10NAA00 is a hybrid stepper motor manufactured by Kollmorgen within the CT Stepper Motors series and identified internally as part of the Cool Torque Performance Series, a line tuned for elevated holding and dynamic torque. In packaging machinery, indexing tables, and laboratory automation, the unit converts digital step commands into discrete shaft movement so position can be repeated without an encoder. Kollmorgen combines the High Torque Performance Series magnetic circuit with a compact NEMA 23 frame to supply consistent rotary motion for light-to-medium industrial axes.

Electrically, the CTP winding delivers a bipolar torque of 1.41 N·m, achieved while each phase is limited to 1.0 A by the drive. The coils present 9.40 ohms of phase resistance and 38 mH of phase inductance, figures that shape current rise time and influence driver voltage during rapid step sequences. With a full-step angle of 1.8°, the rotor advances in 200 discrete steps per revolution, enabling precise incremental moves without closed-loop feedback. A single-stack lamination core keeps rotor inertia to 0.000025 kg·m², and the 0.64 kg overall weight eases mounting on smaller linear stages.

The smooth round shaft measures 6.35 mm in diameter and tolerates up to 50 lbs (23 kg) of axial load in either direction plus 20 lbs (9 kg) of radial force at the center, supporting timing pulley or coupler installations. The NEMA 23 frame, which is 5.7 cm square, attaches through standard through-holes, and the single-stack lamination keeps the motor depth compact. Four lead wires provide phase connections, and the rear remains unobstructed because no additional hardware is fitted. The windings are insulated for 340 VDC, and a thermal resistance of 3.57 °C/watt guides airflow or heat sink choices during sustained high-torque operation characteristic of the series.