Product Description:

The CTP11ELF17MAA00 is a hybrid stepper motor manufactured by Kollmorgen as part of the CT Stepper Motors series. Within industrial automation, this motor converts sequenced current pulses from a drive into incremental shaft rotation for indexing tables, small actuators, and other positioning stages that require open-loop accuracy without feedback devices. Leads provide four connections to the two phases, supporting standard bipolar or unipolar wiring.

The motor develops a holding torque of 0.44 N-m in bipolar drive mode, giving it enough margin for moderate load inertia during start-stop duty. Each revolution is subdivided into 200 full steps, and the inherent step angle of 1.8° sets the basic resolution available to a pulse train. Current limits are set at 1.7 A DC, while a coil rating of 3.6 VDC supports use with low-voltage micro-stepping amplifiers. The phase inductance is 4.2 mH, so the driver must apply adequate current rise to maintain torque at higher pulse rates. Frame size 17 construction, English-tapped mounting, and a metric shaft simplify integration with NEMA-compatible brackets. Axial loading of up to 6 lb in push or 15 lb in pull, along with a radial limit of 15 lb at the shaft center, helps protect the bearings during belt or gear coupling.

The low rotor inertia of 0.05 kg·cm² allows rapid acceleration, and a detent torque of 0.018 N-m helps hold position when the coils are de-energized. Thermal paths are modeled by a resistance of 5.44 °C/W, so housing temperature can be estimated from power dissipation during continuous operation. Electrical losses are governed by a winding resistance of 2.12 Ω, which, together with the rated current, affects steady-state copper heating. Insulation is verified at 100 MΩ and 80 VDC, and the single-stack design keeps the net weight to 0.26 kg for carriage-mounted applications where low mass is important.