CTP22NLF50SA11 Kollmorgen
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The Kollmorgen CTP22NLF50SA11 is a stepper motor from the CT Stepper Motors series, featuring a frame size of 23 and a 2-stack length for high torque performance. It has a maximum speed of 3000 RPM, supports a current rating of 5.0 Amps, and offers 200 steps per revolution with a step angle of 1.8 degrees. This motor can handle an axial shaft load of 50 lbs in both directions and has an insulation voltage rating of 340 VDC.
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Product Description:
The CTP22NLF50SA11 stepper motor is built by Kollmorgen and supplied under the CT Stepper Motors series for use in open-loop or microstepped positioning axes within automated machinery. As a member of the Cool Torque Performance Series, it delivers elevated torque density while maintaining compact dimensions that suit Size 23 (57 mm) mounting envelopes. In plant equipment, the motor converts pulsed drive currents into discrete shaft increments so actuators, indexers, or light conveyors can move to repeatable mechanical positions without feedback devices. This operating method supports controlled incremental motion when paired with a compatible stepper drive.
This model employs two electrical phases, each wound to draw a rated current of 5.0 A and provide a phase resistance of 0.52 ohms. Rotor movement advances by 1.8° per command pulse, resulting in 200 steps per revolution for straightforward motion calculations. Under bipolar excitation, the CTP winding set produces up to 2.54 N·m of holding torque, while a detent torque of 0.08 N·m limits drift when power is removed. The motor can accelerate loads to 3000 rpm, provided the driver voltage is sufficient to support current delivery at higher speeds. Its thermal resistance is 2.62 °C/W, allowing generated heat to pass from the windings through the motor housing. All windings reside in a two-stack stator that fits the NEMA 23 through-hole pattern, allowing installation on compatible legacy mounts. Four lead wires exit the frame for direct connection to the motor drive without an intermediate connector.
A radial bearing system supports an axial load of up to 50 lb in either direction and a radial load of 20 lb (9 kg) at the shaft center. This capacity allows belt tension or gear thrust to be applied without separate thrust plates. Coil dynamics are characterized by a winding inductance of 2.2 mH, which affects current rise time during high-speed stepping. The electrical insulation has a resistance of 100 megaohms and withstands test potentials up to 340 VDC. These electrical properties help isolate the energized windings from the motor frame during operation. The specially machined shaft mates with compatible couplings, while the lead arrangement simplifies routing through the machine and control cabinet.
