Product Description:

The MAC090-1-GD-4-C/110-A-0 is an AC servo motor manufactured by Bosch Rexroth Indramat within the MAC AC Servo Motors series. Designed for analog drives, it delivers closed-loop torque and velocity to machine tools, packaging stations, and material-handling axes that still rely on ±10 V command signals. Its layout suits applications that need direct motor mounting and stable response from a traditional analog control architecture.

The motor has a nominal speed of 3000 rpm. At standstill, it can hold 9.6 Nm while drawing 24.8 A, so the associated amplifier must supply that current without overheating. The torque constant of 0.43 Nm/A provides a linear relationship between armature current and produced torque, which helps simplify analog loop gain calculations. A phase resistance of 0.24 Ω contributes to copper losses, and the 1.5 mH winding inductance shapes current ripple under PWM carriers. Rotor inertia of 53 × 10⁻⁴ kg·m² balances rapid acceleration with load stability during reversals. Velocity feedback is provided by a built-in tacho generator rated at 0.0286 Vs/rad. The motor uses a 110 mm pilot and a 24 mm shaft for direct coupling to standard gearheads, and it comes without a blocking brake, so external locking is required where power-off holding is necessary. Its 60-minute thermal time constant indicates a gradual temperature rise during prolonged duty cycles.

For short bursts above the continuous operating range, the stator can accept a peak pulse current of 196 A, which gives the drive extra acceleration capability before thermal limits intervene. The enclosure has an IP65 rating that prevents dust ingress and guards against low-pressure water jets, so the motor can be mounted outside sealed cabinets. Its 23 kg mass affects mounting hardware selection and also adds thermal inertia during operation. This combination is useful where the motor is installed directly on machine frames that may be exposed to dust or light washdown conditions.