Product Description:

The MAC90C-0-GD-3-C/110-A-0/S01 is an AC servo motor built by Bosch Rexroth Indramat for the MAC AC Servo Motors series. The model is intended for analog drive systems in which velocity and position are regulated by a tachometer signal rather than a digital encoder. By converting electrical current into rotational motion, the motor provides closed-loop control for tooling spindles, pick-and-place axes, and similar automation tasks within the 3,000 rpm performance class.

At standstill, the motor can deliver a continuous torque of 9.6 Nm, sustained by a winding current of 24.8 A while its stator temperature remains within design limits. During motion, the drive can command the rotor up to its nominal speed of 3,000 rpm, which matches common gear ratios in packaging and assembly machinery. The electromagnetic design provides a torque constant of 0.43 Nm/A, so the analog controller can predict output torque directly from the phase current. For rapid indexing or acceleration, the windings tolerate a peak pulse current of 196 A, providing short bursts of additional torque without causing permanent thermal damage.

The housing carries an IP65 rating, sealing the stator against dust ingress and water jets encountered on open production floors. Mechanical coupling is supported by the 110 mm centering diameter and a second shaft end that accommodates the integrated tacho generator, which produces 3 V per 1,000 rpm for speed feedback. Dynamic behavior is influenced by a rotor inertia of 53 × 10⁻⁴ kg·m², allowing the axis to change speed quickly without causing control-loop instability. Copper losses are limited by a winding resistance of 0.24 Ω, while the 1.5 mH phase inductance smooths current ripple. The motor has a thermal time constant of 60 min, allowing its temperature to rise gradually while natural convection keeps the winding insulation within safe limits at installation altitudes up to 1,000 m.