Product Description:

The MAC90B-0-PD/110-0 is produced by Bosch Rexroth Indramat for the MAC AC Servo Motors series. It is designed for analog drives and serves as the rotary element in position or velocity control loops for machine tools, packaging stations, and material-handling axes. Control electronics issue proportional current commands, and the motor responds with accurate torque generation for reliable closed-loop motion in industrial automation.

A centering shoulder of 110 mm with a j6 tolerance aligns the motor on a mounting flange, while the 24 mm output shaft with a k6 tolerance transfers torque to couplings or gearboxes. Under continuous stall conditions, the unit delivers 7.2 Nm while drawing 11.9 A. Its rotor inertia of 0.0036 kg·m² moderates speed changes to support stable regulation. Rated operation reaches 2000 rpm, with heat dissipated through natural convection. The electromagnetic circuit produces torque in proportion to current at a constant of 0.67 Nm/A. The windings have an inductance of 5.1 mH and a resistance of 0.97 Ω, allowing the connected drive to regulate current predictably. The enclosure has an IP65 rating, providing dust-tight protection and resistance to water jets for direct machine installation. Incremental encoder feedback supplies high-resolution speed and position signals to the controller, while power enters through an INS 108/02 connector.

The motor weighs 18 kg, providing thermal mass and mechanical stiffness for demanding duty cycles. For short transients, it can accept a peak pulse current of 86 A, allowing an axis to accelerate rapidly before returning to continuous operating limits. A thermal time constant of 60 minutes indicates how quickly the motor temperature responds when the applied load changes. The absence of a cooling fan reduces moving components and eliminates the need for a separate fan power connection.