CTM31NLF45KAA00 Kollmorgen
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The Kollmorgen CTM31NLF45KAA00 is a stepper motor from the CT Stepper Motors series, featuring a frame size of 34 and a body length of 2.54 inches. It provides a holding torque of 690 oz-in, operates with a rated current of 4.5 A at 3.6 VDC, and supports a full step angle of 1.8 degrees. The motor supports a maximum axial shaft load of 100 pounds in both directions and uses a straight keyway shaft type.
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Product Description:
The CTM31NLF45KAA00 is a hybrid stepper motor built by Kollmorgen as part of the CT Stepper Motors series. In automated assembly lines, it translates command pulses from indexers or micro-stepping drives into incremental shaft movement, allowing fixture positioning and light-load conveyance without an encoder. The motor belongs to the Cool Torque Maximum series, so its design emphasizes high torque density with improved thermal paths for efficient use in compact equipment.
Mechanically, the rotor is supported for axial forces up to 100 lbs in either direction and for radial side loads of 65 lbs at the shaft center, making it suitable for belt-tension or gear-train applications. The single-stack, size-34 frame houses a straight keyway shaft and mounts through NEMA through holes. Dynamic capacity includes a holding torque of 690 oz-in and a bipolar rated torque of 4.9 N-m when wired in a four-lead configuration. With two phases energized at a drive current of 4.5 A, the copper windings have an inductance of 4.3 mH and a resistance of 0.79 Ω, while each step advances the rotor by 1.8°; 200 full steps complete one revolution. Phase energization is routed through flexible leads, enabling direct connection to the drive.
Electrically, the stator insulation is rated for up to 340 VDC, while normal drive buses deliver 3.6 VDC at the specified current, giving the coil set a thermal load of 2.02 °C/W. The rotor’s detent system provides 30 oz-in of torque to resist back-driving when the coils are idle. A compact body length of 2.54 in keeps overall weight to 4.1 lb and limits inertia to 0.0185 oz-in-s², allowing rapid indexing with minimal overshoot. No accessories are fitted at the rear, which keeps the motor layout simple for installation. Lead wires supply the two phases for connection to a compatible stepper drive.
Frequently Asked Questions about CTM31NLF45KAA00:
Q: What is the holding torque of the CTM31NLF45KAA00 stepper motor?
A: The CTM31NLF45KAA00 stepper motor has a holding torque of 690 oz-in, supporting precise motion control requirements.
Q: What frame size does the CTM31NLF45KAA00 stepper motor have?
A: This motor features a frame size of Size 34, which measures approximately 8.5 cm.
Q: What is the maximum axial shaft load for the CTM31NLF45KAA00?
A: The axial shaft load is rated at 100 lbs (45 kg) in both directions for this model.
Q: What type of shaft does the CTM31NLF45KAA00 stepper motor provide?
A: The CTM31NLF45KAA00 uses a straight keyway type shaft for secure attachment to couplings or pulleys.
Q: How is the CTM31NLF45KAA00 stepper motor connected and mounted?
A: This stepper motor is designed with four lead connections and a NEMA through holes mounting style.
