Product Description:

The MAC090C-0-GD-3-C110-A-1 is an AC servo motor produced by Bosch Rexroth Indramat for the MAC AC Servo Motors series. As a motor for analog drives, it translates current reference signals from drive amplifiers into controlled mechanical output for positioning, conveyance, and indexing tasks in industrial automation. The unit uses natural convection for heat removal, and its 90 mm frame fits flanges that require compact installation while maintaining rated performance. This arrangement suits machine axes that need stable speed control and repeatable motion during continuous industrial use.

Electrically, the MAC090C variant with winding code GD delivers a continuous shaft output of 9.6 Nm when the stator carries a continuous current of 24.8 A. At its nominal speed of 3000 min⁻¹, the motor sustains that torque without excessive heating because the copper circuit presents a winding inductance of 1.5 mH and a resistance of 0.24 Ω. The torque constant of 0.43 Nm/A allows the controller to relate current commands to expected acceleration. Standard tacho quality is matched to a tachogenerator constant of 3 V per 1000 min⁻¹, providing analog velocity feedback for closed-loop regulation. A DC 24 V supply within ±10% energizes the brake coil, and the thermal design uses a 60-minute time constant to indicate how quickly the stator reaches steady temperature during continuous operation.

A centering diameter of 110 mm positions the flange precisely, and rotor inertia is 53 × 10⁻⁴ kg·m², supporting moderate start-stop duty cycles. For short transients, the drive can apply up to 196 A of peak pulse current, while the spring-applied brake holds the shaft with 6.5 Nm of torque when power is removed. The housing carries a sealing grade of IP65 against dust and water jets. Speed feedback is routed through tachofeedback mounted on the second shaft end, eliminating external encoders and preserving alignment accuracy. This internal feedback arrangement also helps keep the motor package compact and simplifies integration with compatible analog drive systems.