Product Description:

The MAC90A-0-RD-3C/110-A-0/S001 belongs to the MAC AC Servo Motors series from Bosch Rexroth Indramat. This three-phase permanent-magnet motor is intended for use with analog drive amplifiers, where the controller closes precise velocity and position loops. In automated machinery, it delivers commanded torque to conveyor sections, packaging axes, or material-handling gantries. Its integrated tacho generator supplies real-time speed information to the drive, allowing the controller to correct deviations caused by changing loads. This arrangement supports controlled acceleration, steady operation, and accurate positioning throughout repetitive machine cycles.

Under rated operating conditions, the rotor reaches a nominal speed of 3000 rpm. At standstill, the shaft can deliver 3.5 Nm while drawing a continuous current of 11.4 A. Short load surges are supported by a peak pulse current of 76 A. Mechanical centering on the gearbox flange is guided by a 110 mm pilot diameter that helps keep radial runout low. The built-in tacho produces 3 V per 1000 rpm, providing an analog speed signal to compatible controllers. A power cable with 1.5 mm² conductors connects the stator windings, and the winding inductance of 3.2 mH helps filter pulses from the drive. The windings have a phase resistance of 0.56 Ω, which contributes to the motor’s electrical and thermal behavior during continuous operation.

The housing is sealed to IP65, protecting the internal components against dust and low-pressure water jets. The rotor has an inertia of 20 × 10⁻⁴ kg·m², balancing responsive acceleration with controlled motion during rapid speed changes. The motor has a thermal time constant of 45 minutes, allowing short intermittent overloads before the winding temperature reaches its operating limit. Each ampere supplied to the stator produces a torque of 0.34 Nm/A, allowing the drive to convert current commands into predictable motor torque. Shielded cabling routed through gland plates helps reduce electrical interference in the analog feedback and power connections. The current regulators in the connected analog drive manage the winding current during acceleration, steady motion, and deceleration.