Fully assembled and aligned Au57-66M motor/controller with 100:1 precision spur gear head. Output torque is 1,700 oz-in maximum, and resolution is .0045 degree per half step. Backlash is zero if running in one direction, and approximately 0.4 degree when reversing direction.

This gear head adds 1.59" to the 57-66M stepper motor/controller, and it is 60mm (2.36") square. The output shaft is 8.00mm diameter x 1.29 long, with a .275 flat dimension.

The stepper motor and controller, power supply, RS232 serial port and 6 foot RS232 cable, and I/O cable are included in this low price.

The Au57-66M can drive up to 10 amps, 3 amps being normal.  Click here for drawing and details drawing.

Gold plated connectors, printed circuit boards, and covers for ultimate reliability, heat flow, and performance.  Key specifications etched in real 24K gold on top cover.

Easily change direction, number of steps, speed, acceleration, torque, and other important controls.

On-board RS232 serial communication port.

RS232, 6 input pins (2 analog), and 1 output pin for external motion control. Use the included I/O cable for easy connections to your switches.  
 
Now Includes internal integrated optical encoder, produces postive feedback, saves space, wire, increases reliability, and makes your products superior.

These controllers are microminiature and exceptionally small, see the motor/controller drawings for dimensions.

Our controllers run "right out of the box" by typing a \'w\' then \'G\'. Gear ratio of 3:1 available for $459 and 2 week lead time.