Product Description:

The MAC90C-0-GD-3-C/110-A-0 servo motor from Bosch Rexroth Indramat belongs to the MAC AC Servo Motors series. It is classified as a motor for analog drives. In industrial automation, this unit pairs with analog drive amplifiers to provide closed-loop positioning and velocity regulation on machine-tool axes and handling modules. With its three-phase stator and permanent-magnet rotor, the motor converts electrical energy into mechanical rotation for medium-inertia loads.

The flange has a centering diameter of 110 mm, allowing direct coupling to gearboxes or mounting brackets with minimal radial misalignment. At standstill, the windings can sustain 24.8 A continuously and produce a holding torque of 9.6 Nm without exceeding the permissible temperature rise. Heat is removed solely through natural convection, so airflow around the housing must not be restricted. During rated operation, the rotor reaches 3000 rpm, a speed compatible with many ball-screw drives. Electrical characteristics include a winding inductance of 1.5 mH and a resistance of 0.24 Ω, and this combination shapes current ripple and influences the required drive voltage. Power leads must be at least 2.5 mm² to limit conductor heating and voltage drop.

Dynamic behavior includes a peak pulse current of 196 A, which supports rapid acceleration when matched with the 53 × 10⁻⁴ kg·m² rotor inertia and the 20.2 A per-phase running current. The second shaft end has an IP65 rating, allowing installation in areas exposed to dust or splashed emulsions. A thermal time constant of 60 minutes shows that the stator warms gradually, while the 23 kg mass helps absorb heat during load changes. The torque constant of 0.43 Nm/A supports straightforward current-based control algorithms used in analog amplifiers.