Product Description:

The MAC90C-1-KD-1-B/110-A-0/DI-1250/S01 is an AC servo motor manufactured by Bosch Rexroth Indramat for the MAC AC Servo Motors series. Intended for analog drive systems, it converts amplifier current into controlled rotary motion in production machinery. The motor relies on axial surface cooling to remove heat from the frame, and it is supplied without a blocking brake, so position holding must be provided by the machine mechanics or the drive itself. An incremental, shock-damped encoder is mounted to the shaft to provide real-time position feedback to the control loop.

The electrical and mechanical performance envelope is set by several key figures. A nominal shaft speed of 2000 rpm establishes the continuous operating point, while a standstill torque of 16.0 Nm can be produced indefinitely when the winding draws 26.1 A. The electromagnetic design gives a torque constant of 0.68 Nm/A, making current-to-torque calculations linear for analog regulators. Dynamic response is tempered by a rotor inertia of 0.0053 kg·m², which suits medium-mass loads. The windings have 3.6 mH of inductance with 0.60 Ω resistance, and the encoder outputs 1250 lines for velocity and phase control. The complete assembly weighs 23 kg, which affects mounting rigidity and vibration behavior.

Additional interface and thermal values complete the integration profile. An external blower powered by AC 230 V keeps the stator within its design temperature during low-speed duty. For rapid indexing, the drive may supply a peak pulse of 125 A, allowing short acceleration bursts without demagnetization. Mechanical alignment is simplified by a centering diameter of 110 mm, which supports repeatable coupling to gearboxes or direct-drive flanges. Long-term heating is predictable because the composite materials reach thermal equilibrium in 45 min, a value used when calculating permissible duty cycles for cyclic loading patterns.