Product Description

U9M4H is a U series servo motor from Kollmorgen’s ServoDisc product line. These motors are designed for applications that require motors with a low profile. The motor’s design, specifically the flat disc armature, enables a low profile, making it ideal for applications that have space constraints and require superior performance. This series of motors supports a number of options, including integrated or external tachometers and optical encoders for feedback. In addition, operators can order the motors with fail-safe brakes for additional operating safety. This series of servo motors requires a motor controller, and Kollmorgen’s EM19 linear amplifiers and KXA Plus amplifiers can be used with them. These are ironless motors with low inertia for fast acceleration and low energy consumption. The brushes used on the motors have a long operating lifespan.

Peak output torque of the U9M4H motor is 513 N-cm. Its operating speed is 3000 RPM and it can sustain speeds of up to 6000 RPM. The continuous torque depends on ambient temperature: it is 57 N-cm and 51 N-cm at 25 and 40 degrees Celsius respectively. Power output rating of the U9M4H motor is 179 Watts. Its continuous stall torque is 46 N-cm and its cogging torque is 0. The terminal voltage rating for the servo motor is 31.9 Volts. Continuous current rating of the servo motor is 8.6 amps and the peak current it can sustain is 72 Amps. Rating for the continuous current at stall is 6.8 Amps. Moment of inertia of the rotor is 0.31 kg m2, which enables fast response times. Length of the motor is only 2.39 inches and its weight is 2.4 kilograms. Only professionals should operate the motor.