Harmonic drive™ gearing actuators are an integral package consisting of an encoder, brush or brushless servo motor and a precision harmonic drive™ gearhead. Used in highly demanding industrial robot and servo systems, harmonic drive™ actuators can provide precision motion control and high torque capacity in very compact packages. Encoders and tachometers are built integral with the motor to make the axial length a minimum. Harmonic drive™ gearing is lubricated with a special grease providing low maintenance and prolonged service life. more... See more text