CTM21NLF10NAA00 Kollmorgen
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The Kollmorgen CTM21NLF10NAA00 stepper motor belongs to the CT Stepper Motors series and features a size 23 frame with a round smooth shaft and NEMA through holes for mounting. It provides a maximum torque of 1.84 N-m, supports axial shaft loads up to 50 lbs in both directions, and operates at a current rating of 1.0 Amp. The motor offers a step angle of 1.8 degrees, a maximum speed of 3000 RPM, and weighs 0.68 kg.
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Product Description:
The CTM21NLF10NAA00 is a hybrid stepper motor produced by Kollmorgen in the CT Stepper Motors family and the Cool Torque Maximum series. As an Enhanced Series design aimed at high torque and efficiency, the unit converts digital pulse trains from an indexer or drive into incremental mechanical motion for positioning tasks in pick-and-place, labeling, and small conveyor axes. Its NEMA 23 footprint fits standard mounting patterns while preserving the open-loop simplicity used in many compact automation cells. This format is well suited for repeatable indexing and feed moves where commanded steps correspond directly to shaft rotation.
Under bipolar excitation, the motor develops up to 1.84 N-m of holding torque while drawing a rated phase current of 1.0 A. That output is backed by a detent torque of 0.09 N-m, which helps keep the shaft stable when power is removed. The motor has a size 23 frame measuring 5.7 cm and a single-stack lamination core, so it mounts through standard NEMA through-holes and uses a round smooth shaft. Mechanical loading is rated for up to 50 lbs axially and 20 lbs radially at the shaft center, which suits moderate belt or lead-screw tension. Motion resolution is 200 steps/rev, and rotor speed can reach 3000 rpm for rapid index moves. Two phases are wired as four leads, which simplifies connection to the drive electronics.
Electrical integrity is maintained by 100 MΩ of insulation resistance and a 340 VDC insulation rating between the windings and frame. Dynamic performance is shaped by a phase inductance of 28 mH, a phase resistance of 9.4 ohms, and a rotor inertia of 0.000025 kg·m², which influence current rise time and acceleration capability. The basic step angle is 1.8°, matching common microstepping drives for smoother motion. At 0.68 kg, the motor adds minimal load to linear stages, and a thermal resistance of 3.57 °C/W helps limit winding temperature. This configuration is supplied without rear housing features, which keeps the back end of the motor straightforward for compact installations.
Frequently Asked Questions about CTM21NLF10NAA00:
Q: What is the maximum axial shaft load the CTM21NLF10NAA00 can handle?
A: The CTM21NLF10NAA00 stepper motor supports a maximum axial shaft load of 50 lbs (23 kg) in both directions.
Q: What is the bipolar motor torque rating of the CTM21NLF10NAA00?
A: This motor provides a bipolar torque of 1.84 N-m for CTM models and 1.41 N-m for CTP models.
Q: What is the frame size of the CTM21NLF10NAA00 stepper motor?
A: The CTM21NLF10NAA00 has a frame size of 23, measuring 5.7 cm.
Q: What is the maximum speed of the CTM21NLF10NAA00?
A: This model operates at a maximum speed of 3000 RPM.
Q: What is the step angle and step count per revolution for the CTM21NLF10NAA00?
A: It offers a step angle of 1.8°, providing 200 full steps per revolution.
