Product Description:

The MAC90B-0-PD-4-C/110-A-1/WI520L/S01 is an AC servo motor produced by Bosch Rexroth Indramat within the MAC AC Servo Motors series. Designed for analog drive systems, it converts drive current into precise rotary motion for positioning tables, feeders, and similar automation axes. Its integrated incremental encoder supplies the speed and position data expected by legacy controller cards, allowing closed-loop regulation during operation without additional sensors.

The motor’s rated operating point is a nominal speed of 2000 rpm, giving a predictable velocity reference. At standstill it can deliver 7.2 Nm of continuous torque while drawing a standstill current of 11.9 A; this combination indicates the thermal load when the shaft is locked. For short acceleration bursts, the drive may supply a peak pulse current of 86 A, enabling quick indexing moves without saturation. With a torque constant of 0.67 Nm/A, each ampere of phase current produces about two-thirds of a newton-meter, which helps keep current demand easy to estimate. A winding inductance of 5.1 mH moderates current rise times, helping the analog amplifier maintain stable control loops. Because the encoder is a standard-mount incremental type, cabling and alignment remain straightforward across multiple installations.

The integrated holding brake secures the shaft with 6.5 Nm of static torque and is energized by a coil rated at 24 V DC while drawing 0.7 A, so the control cabinet only needs a small auxiliary supply. The motor is sealed to IP65, permitting installation in dusty or washdown areas once the mating connectors are fitted. The thermal time constant of 60 minutes shows that winding temperature rises slowly, allowing extended dwell periods without fan assistance. Mechanical interfaces include a 130 mm flange, a 30 mm shaft, and a 110 mm pilot diameter for concentric seating. Electrical losses are influenced by a winding resistance of 0.97 Ω, which affects steady-state copper heating under continuous load.