Product Description:

Bosch Rexroth Indramat manufactures the MAC090B-0-JD-1-B/110-A-0/I01250 within its MAC AC Servo Motors series. This AC synchronous unit is intended for analog drives and converts controlled stator current into repeatable torque for packaging lines, pick-and-place axes, and other automation tasks. Heat is removed by natural convection, eliminating the need for external blowers, and an incremental encoder provides position feedback to the drive controller. The 110 mm centering diameter aligns the flange precisely with gearboxes or mounting plates, supporting vibration-free operation at production speeds. The feedback arrangement helps the control loop maintain stable motion when load conditions change during normal machine cycles.

Under steady load the motor can deliver a continuous stall torque of 6.7 Nm. Generating that output requires a continuous stall current of 18.2 A, while the normal running line current per phase is 14.8 A. The electromagnetic design offers a torque constant of 0.41 Nm/A, which lets the controller translate commanded current into shaft torque estimates. Routine motion occurs near a nominal speed of 3000 rpm, yet short acceleration bursts are supported by a peak pulse current of 137 A. That current-to-torque relationship helps the amplifier respond predictably during acceleration, deceleration, and rapid indexing sequences.

The rugged housing carries an IP65 rating, sealing the stator against dust and low-pressure water jets. A thermal time constant of 60 min shows that the winding mass needs about an hour to reach thermal equilibrium, allowing intermittent overloads. Current-loop dynamics are set by a winding inductance of 2.0 mH and a winding resistance of 0.38 Ω. These electrical values affect how quickly current rises in the windings and how much heat is generated during sustained operation. Power is supplied through a connector on side A, and conductors must be at least 1.5 mm² in cross-section to limit voltage drop. Because the motor is shipped without a blocking brake, external mechanisms must hold the load whenever power is removed.