Product Description:

The MAC90B-0-JD-1-B/110-A-0/I-1250/S01 is an AC servo motor produced by Bosch Rexroth Indramat within the MAC AC Servo Motors series. As a motor for analog drives, it supplies commanded torque to machine axes without requiring digital fieldbus interfaces, making it appropriate for legacy automation where analog velocity or torque loops remain in service. With a sealed frame and bearing set, the unit converts electrical current from the drive into mechanical rotation for positioning, tensioning, or speed-regulation tasks common in packaging, printing, and material-handling lines. Its operating concept also suits retrofit machinery that continues to rely on established analog amplifier hardware. Because of that approach, it can be used on axes that need repeatable response during frequent starts, stops, and speed changes.

In continuous operation, the motor delivers 6.7 Nm of torque at a drive current of 18.2 A. This pairing indicates the thermal load the windings can accept without overheating under natural convection cooling, so no external blower or liquid circuit is required. At the rated shaft speed of 3000 rpm, the mechanical output follows the analog command signal with low ripple, allowing precise velocity loops. The housing carries an IP65 rating that blocks dust ingress and low-pressure water jets, allowing mounting outside of control cabinets. A machined shaft diameter of 24 mm simplifies coupling to gearboxes or belt pulleys that use standard metric bore dimensions. Passive cooling also avoids extra fan wiring on moving equipment.

For transient motion demands, the drive can supply a peak pulse current of 137 A, letting the rotor accelerate rapidly when indexing or overcoming static friction. Electromagnetic conversion efficiency is indicated by the torque constant of 0.41 Nm/A, so each ampere adds roughly four-tenths of a newton-meter of torque. Thermal equilibrium is reached slowly, and the motor’s 60 min thermal time constant provides margin before winding insulation reaches its limit during short duty-cycle peaks. Electrical dynamics are shaped by a winding resistance of 0.38 ohm, which helps the servo amplifier estimate copper losses and apply current limiting accurately. Short acceleration events can be handled without requiring a separate forced-cooling system.