Product Description:

The MAC90C-0-GD-4C/110-A1/WI520LX/S01 is an AC servo motor built by Bosch Rexroth Indramat for the MAC AC Servo Motors series. As a motor for analog drives, it converts current supplied by conventional servo amplifiers into controlled rotary motion for positioning and velocity loops in industrial automation cells. The unit integrates a holding brake for vertical axes and shares mechanical dimensions common to the 90 frame size, allowing integration into existing machine layouts. This motor supports tasks such as indexing tables, pick-and-place gantries, and light machining spindles where repeatable torque and rapid acceleration are required.

During continuous operation, the rotor turns at a nominal speed of 3000 rpm, which matches common 50/60 Hz gear ratios. At standstill, the windings draw 24.8 A and produce 9.6 Nm of torque without exceeding thermal limits. Each ampere contributes torque at a rate of 0.43 Nm/A, so the controller can calculate current commands directly from the demanded shaft load. Short bursts can rise to 196 A, enabling rapid acceleration before feedback settles at the nominal setpoint. Electrical losses are reduced by a winding resistance of 0.24 Ω at 20 °C, while the 1.5 mH inductance shapes current rise time and filters high-frequency drive switching.

The housing is sealed to IP65, preventing dust ingress and low-pressure water jets from reaching the stator. A flange diameter of 130 mm with a concentric 110 mm pilot centers the motor on gearboxes or adapter plates, and the shaft has a 24 mm diameter with a keyed section for torque transmission. Rotor inertia is 53 × 10⁻⁴ kg·m², providing a balance between quick response and load stability, and the integral brake supplies 6.5 Nm to lock the shaft when power is removed. With a mass of 23 kg and a 60-minute thermal time constant, temperature rises slowly under cyclic loads, supporting continuous duty in enclosed cabinets.