Overview
The CMI 17EP070-1652 planetary gearhead is an integrated motion control assembly combining a stepper motor (model 4118L-25SD-06) with a precision planetary gearbox. This compact unit delivers enhanced torque while maintaining the precise stepping accuracy required in industrial and automation applications. Planetary gearheads reduce output speed while amplifying motor torque, making them ideal for applications with limited space that demand both precision and power.
Key Features
- Integrated planetary gearbox with stepper motor for space-efficient design
- Low backlash operation ensures precise positioning and repeatability
- Compact NEMA 17-compatible form factor ideal for confined installations
- High torque output relative to motor size—suited for load-heavy applications
- Stepped motion control with reduced vibration compared to direct-drive alternatives
- Suitable for both industrial OEM and custom motion control integrations
Technical Specifications
The CMI 17EP070-1652 planetary gearhead system is engineered for precision and reliability. Verify exact electrical ratings, gear ratio, output torque, and mounting dimensions with your application requirements or contact a CMI distributor. Standard NEMA 17 stepper motor compatibility is typical for this product line, though specific winding and current specifications should be confirmed prior to procurement.
Typical Applications
- CNC and machining: Precision tool positioning and spindle control
- Robotics: Joint actuation with high torque in compact spaces
- 3D printing and additive manufacturing: Extruder drive and axis control
- Automated assembly: Part feeding, indexing, and positioning
- Laboratory and instrumentation: Sample manipulation and measurement systems
- Motion control stages: Precision linear and rotary positioning tables
Compatibility & Replacements
Compatible With
- Standard stepper motor drivers and controllers (NEMA 17 compatible wiring)
- Microcontrollers with stepper/pulse-and-direction motion control (Arduino, PLC, CNC boards)
- Industrial automation platforms requiring precise low-speed torque
- Motion control software supporting standard stepper motor interfaces
Replaces / Drop-In Replacement For
The CMI 17EP070-1652 is designed as a direct replacement for equivalent CMI planetary gearhead stepper motor assemblies. For compatibility with competing planetary gearhead models from other manufacturers, verify mechanical mounting, electrical connectors, gear ratio, and torque specifications with your system integrator before ordering.
Works With
- Standard stepper motor microstepping drivers (DRV8825, A4988, and industrial equivalents)
- PLC motion control modules with pulse-train outputs
- CNC control software and motion planning firmware
- Industrial motion control networks (EtherCAT, PROFNET drivers with stepper support)
- Custom firmware and open-source motor control libraries


















