CTM22NLS12NAA00 Kollmorgen
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The Kollmorgen CTM22NLS12NAA00 is a stepper motor from the CT Stepper Motors series, featuring a size 23 frame and round smooth shaft. It offers 3.32 N-m of bipolar motor torque and supports 200 full steps per revolution. The motor supports six lead connections with a rated current of 1.2 A per phase and weighs 2.5 pounds.
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Product Description:
The CTM22NLS12NAA00 is a two-phase stepper motor manufactured by Kollmorgen and supplied in the CT Stepper Motors series, also known as the Cool Torque Maximum product line. Within an automation cell, it converts pulse trains from an indexer or PLC into discrete rotary motion, providing repeatable positioning without the need for an external feedback device. The motor is built on a 2-stack magnetic assembly to raise output torque and follows the Enhanced Series approach of combining high torque with good thermal efficiency for continuous industrial duty.
An electrical step of 1.8° gives the rotor 200 full steps per revolution, establishing basic resolution before microstepping. Each phase draws 1.2 A at standstill and presents a winding impedance of 8.26 Ω. The associated inductance is 14 mH, so current rises predictably when driven from a constant-voltage amplifier. Dielectric integrity is maintained to 340 VDC, and insulation measures 100 MΩ or higher when tested at that voltage. Thermal resistance is 2.62 °C/W, allowing the frame to dissipate heat into ambient air while keeping winding temperature within limit. The rotor inertia is 0.0068 oz-in-s², supporting rapid acceleration, and the overall weight is 2.5 lb, which helps with mounting on small gantries or conveyors. Electrical access is provided through six color-coded leads that support series, half-coil, or parallel connection patterns.
The motor generates a constant torque of 3.32 N·m in bipolar operation, enabling direct drive of moderate indexed loads. Mechanically, it withstands axial thrusts up to 50 lb in either direction and radial forces of 20 lb at the shaft center. The housing conforms to the Size 23 (5.7 cm) envelope and fastens with NEMA through-holes for interchange with legacy motors. A round smooth shaft simplifies coupling, and the rear face carries no secondary encoder or brake, which reduces overall depth. Lead-style electrical connections make the motor easy to wire into standard control cabinets.
