Product Description:

The MAC090B-0-JD-1-B/110-A-1/I01250 is an AC servo motor produced by Bosch Rexroth Indramat as part of the MAC AC Servo Motors series. Designed for analog drives, it converts proportional current commands into controlled shaft torque and speed for precision positioning tasks in automated equipment. Its built-in incremental encoder supplies rotor position data to the drive so a closed-loop control circuit can maintain accurate motion profiles. This arrangement makes the motor suitable for axes that need repeatable movement, steady velocity control, and compact integration without a separate external feedback package.

The motor uses natural convection cooling, so heat is removed through the housing surface without external fans. A centering diameter of 110 mm simplifies alignment to gearboxes and flanges during installation. Under static load, the motor supplies 6.7 Nm of continuous torque while drawing a steady 18.2 A, which indicates the motor’s continuous holding capability. Torque rises linearly with armature current, reflected by a constant of 0.41 Nm/A, and this relationship is influenced by a copper path resistance of 0.38 Ω at 20 °C. Electrical transients are shaped by a winding inductance of 2.0 mH, which governs the rate of current change commanded by the analog amplifier. When rotation is permitted, the motor reaches a nominal speed of 3000 rpm, providing a stable operating point for continuous duty.

For dynamic events such as rapid acceleration, the winding can accept a peak pulse current of 137 A without exceeding magnetic saturation, while the allowable phase current during cyclic operation is 14.8 A. Thermal energy from these excursions dissipates slowly, and the motor’s thermal time constant of 60 min indicates the period needed for a 63% temperature rise under changing load conditions. The housing has an IP 65 rating that resists dust ingress and low-pressure water jets. A standard blocking brake engages mechanically to hold the shaft when power is removed, and the power conductors connect on side A for straightforward cable routing.