Product Description:

Bosch Rexroth Indramat manufactures the MAC90B-0-JD-2-C/110-A-0, an AC servo motor in the MAC AC Servo Motors series. Designed for analog drive systems, this unit converts command voltages into controlled shaft motion for positioning and speed regulation in automated tooling, packaging, and material-handling equipment. Its construction supports harsh plant environments and precise closed-loop control.

The motor develops a standstill torque of 6.7 Nm, providing holding torque for indexing tasks without a supplemental brake. Under continuous load, the stator draws a motor phase current of 14.8 A, and each additional ampere produces torque according to the constant of 0.41 Nm/A. At its rated operating point, the rotor stabilizes at 3000 rpm. Electrical characteristics include a winding resistance of 0.38 Ω and a winding inductance of 2.0 mH, which affect drive bandwidth and current-loop tuning. Natural convection removes copper losses, so no external airflow is required. Mechanical mounting is guided by a centering diameter of 110 mm, and field wiring must use conductors with a cross-section of at least 1.5 mm². The housing has an IP65 rating.

During rapid acceleration, the drive can supply a peak pulse current of 137 A, allowing short bursts of torque well above the continuous rating. The rotor inertia is 0.0036 kg·m², which provides a moderate balance between dynamic response and load stability when the motor is coupled to gearboxes or belt transmissions. Thermal behavior follows a time constant of 60 min, meaning the stator takes about one hour to reach 63% of its final temperature after a step change in loss. With a mass of 18 kg, the motor adds structural damping and helps reduce vibration transfer to the machine frame. A standstill current of 18.2 A is available for static load holding.