The 9CD/12CD Pancake Servo Motors utilise a flat motor technology. These motors have continuous torque ratings up to 135 oz/in. They operate up to 4000 RPM and have an intergal tachometer as one option. They are also prepared for optical encoder mounting. Features: Rear shaft extension Prepared for encoder 9CD Pancake Servo Motor Dimensions 12CD Pancake Servo Motor Dimensions