Product Description:

The CTP20NLF07NAA00 is a hybrid stepper motor manufactured by Kollmorgen as part of the CT Stepper Motors series, specifically the Cool Torque Performance Series subset. Built on the Size 23 frame with a short stack, the unit converts discrete pulse commands from an indexer or micro-stepping drive into precise rotary motion for positioning axes, small pumps, and material-handling fixtures in industrial automation. A NEMA through-hole flange simplifies mounting, and a four-lead connection style supports bipolar drive topologies without an integrated rear option.

Its electromagnetic characteristics set the drive sizing envelope. The motor develops a bipolar holding torque of 0.71 N·m, enough for moderate feed screws or light conveyors. Each full step advances the shaft by 1.8°, allowing 200 full-step positions per revolution before any electronic subdivision is applied. Winding inductance is 41 mH, so the current rises comparatively slowly and benefits from chopper drives that apply higher bus voltages during step transitions. A per-phase draw of 0.68 A DC keeps power dissipation low for dense panel installations, while the copper loops exhibit 17.1 ohms of resistance at 40 °C, influencing steady-state heating and drive voltage selection.

Mechanical limits complement the electrical profile. A smooth, round shaft with a diameter of 6.35 mm and a length of 20.57 mm passes through the front bearing to accept couplings or pulleys. The assembly tolerates axial forces up to 50 lbs in either direction and radial loads of 20 lbs applied at the shaft center, widening the choice of belt or gear drive options. Rotor inertia is only 0.000018 kg·m², supporting fast start-stop duty cycles without excessive settling time. For insulation integrity, the windings are rated for 340 VDC, providing ample margin for modern high-voltage micro-stepping drives operating from rectified 120- or 240-volt mains.