Product Description:

The MAC90C-0-GD-4-C/110-A-0/WI520/S01 is an AC servo motor manufactured by Bosch Rexroth Indramat within the MAC AC Servo Motors series. Intended for analog drives, it provides controlled rotary motion for positioning axes in automated equipment. Heat is removed through natural convection, and the motor is supplied without a blocking brake, so external mechanical devices must secure the load when power is off. Combined tacho feedback and a standard incremental encoder supply both velocity and position data to the drive, while the standard tacho generator outputs 3 V per 1000 rpm for speed monitoring. This feedback arrangement lets the connected controller track shaft rotation in real time without separate external transducers. All power conductors enter on side A, which can simplify cable routing where the machine layout favors one connection direction.

A continuous stall current of 24.8 A generates a continuous stall torque of 9.6 Nm, enabling the shaft to hold static loads indefinitely within rated temperature limits. During operation, the rotor tracks a nominal speed of 3000 rpm, matching common drive reference frequencies in servo systems. Torque scales with phase current according to a constant of 0.43 Nm/A, which helps the amplifier translate commanded current into predictable mechanical output during load changes. Copper losses are limited by a winding resistance of 0.24 Ω, supporting efficient duty cycles in packaging lines, gantries, and material-handling equipment. These electrical characteristics also support stable low-speed control during repeated start-and-stop motion.

Short bursts of acceleration are handled by a peak pulse current of 196 A, which the associated amplifier can deliver without exceeding thermal or magnetic limits. Precise mechanical alignment is simplified by a centering diameter of 110 mm that registers the housing concentrically to the machine frame. That fit helps preserve coupling alignment and reduces unwanted stress on bearings and connected hardware. A winding inductance of 1.5 mH moderates di/dt, reducing current ripple and aiding stable current regulation. A thermal time constant of 60 min means internal temperature rises gradually during load changes, so the motor can absorb brief overload periods before the winding reaches steady-state temperature.