I have three Ametek DC brush motors with the info bellow:
* Voltage 38 VDC
* Torque Constant 44oz-in/amp
* Amperage 0.2 Amps (no load)
* Max Current 12 Amps
* Speed 1,150 RPM (no load)
* Rotation Reversible
* Mount 4 tapped holes in face on 3-1/4" square pattern
* Shaft 5/8" dia. x 1-1/4" smooth
* Rear shaft 3/16" dia. x 3/8" at rear
* Size 4" dia. x 4-1/2"
* Weight 7 lbs.
Price $189 obo for three motors.
More info of a similar motor can be found here:
http://www.lowcostcncretrofits.com/servo%20motors.html
