Product Description:

The MAC90C-0-GD-C/110-A-0/MR119/S001 is an AC servo motor produced by Bosch Rexroth Indramat for the MAC AC Servo Motors series. Designed for analog drives, it converts current commands from legacy drive amplifiers into shaft motion for indexing tables, packaging axes, and other position-controlled tasks in industrial automation. Natural convection removes heat from the motor, allowing installation without forced-air cooling equipment. This cooling method also avoids the maintenance and additional wiring associated with an external fan.

At its nominal operating point, the rotor reaches 3000 rpm, providing a suitable velocity for moderate-speed gantries and feeders. Continuous torque at standstill is rated at 9.6 Nm, and the motor produces this torque with a continuous phase current of 24.8 A. The winding has a torque constant of 0.43 Nm/A, allowing the analog drive to regulate torque through the applied current. For rapid acceleration or disturbance rejection, the winding can accept a peak pulse current of 196 A. This temporary current capacity increases the available torque during short acceleration periods while accounting for the thermal limits of the motor’s insulation and windings.

The mechanical interface uses a centering pilot of 110 mm to align the flange with gearboxes or direct-drive mounts. Stator connections are arranged on side A, allowing cables to exit in a consistent direction within the machine frame. Dynamic response is influenced by a rotor inertia of 53 × 10⁻⁴ kg·m², which supports quick speed changes under closed-loop control. The copper windings have a resistance of 0.24 Ω and an inductance of 1.5 mH, affecting current rise time and analog amplifier gain settings. Heat from transient operation dissipates over a thermal time constant of 60 min, which must be considered when planning intermittent overload cycles. A standard tacho generator produces 3 V per 1000 rpm for velocity feedback to the drive amplifier. The motor has no blocking brake, so an external device or drive-applied torque must hold the connected load when the axis is stationary.