Product Description:

The MAC71C-0-GS-4-C/95-B-0/WI517L is an AC servo motor produced by Bosch Rexroth Indramat for the MAC AC Servo Motors series. Classified as a motor for analog drives, it provides speed-controlled rotary motion for machine tools, handling modules, and other automation axes. The design uses natural convection cooling, so no auxiliary blower is required for heat removal during normal operation. This passive cooling method also eliminates moving fan components and reduces the space needed around the motor for auxiliary equipment.

It delivers a nominal shaft speed of 6000 rpm, enabling high-cycle positioning when paired with analog velocity drives. At stall, the motor can generate 6.6 Nm of continuous torque while drawing a continuous current of 22.0 A; these values indicate the sustained operating load at which the winding temperature reaches equilibrium. Short acceleration bursts are supported by a peak pulse current of 110 A, which the drive must supply without exceeding semiconductor or cable limits. The aluminum frame has an IP65 protection rating, guarding the stator against dust and water jets during washdown or exposure to coolant splash. A centering diameter of 95 mm supports accurate flange alignment, while the unit has a mass of 11 kg. Its 45-minute thermal time constant indicates the gradual rate at which the stator temperature rises under a steady load.

The electromagnetic circuit produces torque at a rate of 0.300 Nm/A, so command current scales linearly with output torque for straightforward analog control loops. Low rotor mass, represented by an inertia of 0.00129 kg·m², supports rapid reversal and minimizes settling time on high-speed servo axes. Coil dynamics are influenced by a winding inductance of 1.7 mH and a winding resistance of 0.17 ohm; these electrical properties affect current rise time and copper losses. Combined tachometer feedback and incremental encoder signals provide both velocity information and high-resolution position data. These feedback channels allow the drive to regulate motor speed and position without requiring additional external sensors.