Product Description:

The CTP11ELF07MAA00 is a two-phase stepper motor manufactured by Kollmorgen within the CT Stepper Motors series. In automated positioning or metering stations, it converts pulse trains from a controller into precise angular movement and supplies open-loop motion without additional feedback devices. The unit is part of the Cool Torque Performance Series, which raises output density so that a compact Size 17 frame can deliver useful torque while maintaining stable operating temperatures during continuous duty cycles.

Its mechanical envelope is a Size 17 / 4.2 cm square frame with a 40.9 mm body length, so it fits standard NEMA 17 mounts. The magnetic circuit delivers a holding torque of 0.44 N·m, which helps prevent back-driving when the windings are fully energized. At the electrical rating, the coils draw 0.68 A/phase from an 8.5 VDC supply, a modest demand that helps simplify driver thermal management. A winding inductance of 26 mH affects current rise time, so higher inductance smooths ripple but can slow high-speed step response. A phase resistance of 12.5 Ω ±10% sets the steady-state current limit once chopping control settles.

Fine positioning is delivered in discrete increments of 1.8°, yielding 200 full steps per revolution that align with common CNC and pick-and-place indexing schemes. The shaft tolerates axial loads of 6 lbs (2.7 kg) push / 15 lbs (6.8 kg) pull, while the bearings can withstand a 15 lb side load at the shaft center without accelerated wear. Heat generated by copper loss exits through the housing along a thermal path rated at 5.44 °C/W, so temperature rise remains predictable when the motor is mounted to an aluminum plate. A detent torque of 0.018 N·m helps retain position with power removed, and a rotor inertia of 0.05 kg-cm² supports quick acceleration in light-load stages while keeping resonance manageable.