Product Description:

The MAC90C-0-KD-4-C/110-B-0/WI522LX belongs to the MAC AC Servo Motors series manufactured by Bosch Rexroth Indramat. It is a permanent-magnet AC servo motor intended for analog drive systems where speed and torque must be regulated precisely in automated machinery. Within such installations, the servo converts electrical commands from the drive into mechanical rotation while its tachogenerator and mounted encoder return real-time speed information for the control loop.

At standstill, this motor can produce 10.4 Nm of continuous torque while drawing a continuous phase current of 17.0 A; these figures describe the thermal load that the winding can tolerate without exceeding the Class F insulation limits. The shaft reaches a nominal speed of 2000 rpm, a value that balances magnetic flux, back EMF, and bearing life in typical positioning axes. A torque constant of 0.68 Nm/A links drive current to shaft torque, enabling straightforward current-loop scaling. The tacho generator supplies 3 V/1000 rpm, giving the analog controller a proportional speed signal, while the incremental encoder fitted in the standard mount supplies additional resolution for position capture. Copper losses are influenced by the stator’s 3.6 mH phase inductance, which shapes current ripple and affects the response of the current regulator.

Dynamic events are handled by a peak pulse current of 125 A, allowing short bursts of accelerating torque without demagnetizing the rotor. The rotating assembly carries a moment of inertia of 0.0053 kg·m², so the motor accelerates moderately fast while still damping load disturbances. Natural-convection cooling and a cast housing give the unit a thermal time constant of 60 min, meaning long duty cycles are possible before temperature equilibrium is reached. The overall mass is 23 kg, and a centering diameter of 110 mm simplifies alignment with compatible gearboxes and machine frames.