Product Description:

The MAC071A-0-OS-3-C/095-B-1 is an AC servo motor produced by Bosch Rexroth Indramat for the MAC AC Servo Motors series. As a motor for analog drives, it converts controller current commands into precise shaft motion for positioning machine axes in industrial automation. This model suits applications that accept a medium frame size and passive cooling, and its built-in tachogenerator gives the connected amplifier continuous speed information during operation. Because the speed signal is generated inside the motor, the drive can correct load-related deviations without requiring a separate external tacho assembly.

The motor uses a blocking brake rated at 3 Nm, allowing vertical loads to remain stationary when power is removed. A centering diameter of 95 mm aligns the stator housing with machine adapters and helps maintain coaxial accuracy between the drive shaft and driven components. Heat is dissipated through natural convection, so the installation should allow free airflow around the frame. Rated speed reaches 3000 rpm, giving steady velocity tracking for general-purpose positioning tasks. The power leads exit through a connector on side B, which helps simplify cable routing inside cabinets and keeps feedback wiring separate from power conductors. This layout also works well in compact machine spaces where cable bends must be controlled near the motor. The brake is the standard version, and the A motor length keeps overall depth low for compact machine layouts.

The unit is supplied with tacho feedback and a second shaft end, so an external encoder can be mounted on the auxiliary shaft while the internal tacho provides speed feedback to the analog controller. The tachogenerator produces 3 V/1000 rpm, giving the drive a linear reference signal across the operating range. Tacho quality is standard, which supports repeatable speed measurement during normal axis operation. Winding designation OS matches the stator coils to MAC series drives that deliver the correct current density for size 071 frames. The second shaft end can also accommodate supplementary feedback hardware when the machine layout requires it.