Product Description:

The MAC090B-0-JD-1-B/110-A-0 is an AC servo motor produced by Bosch Rexroth Indramat within the MAC AC Servo Motors series. Designed as a motor for analog drives, it converts electrical commands from legacy velocity or position controllers into precise mechanical motion for industrial automation axes. The unit relies on natural convection for cooling and has no blocking brake, making it suitable for applications where the drivetrain or an external mechanism secures the load at rest. This arrangement is often used on machines that continue to operate with analog servo amplifiers and external motion control hardware. Typical positioning, conveying, or tooling stations use this motor to deliver repeatable speed and torque profiles.

At standstill, the motor develops a continuous torque of 6.7 Nm and draws a continuous current of 18.2 A, and this combination marks the thermal working limit for static holding or slow-speed duty. When the controller commands acceleration, the windings can accept up to 137 A of peak pulse current, allowing rapid torque surges without demagnetizing the rotor. Under rated supply conditions, the shaft reaches 3000 rpm, a speed suited to general machine tool and handling tasks. The motor is sealed to IP65, which helps protect internal components from dust and low-pressure water jets when the unit is mounted directly on the machine frame. That level of protection is useful on equipment that operates near coolant spray, airborne particles, or routine washdown of surrounding surfaces.

The torque constant of 0.41 Nm/A links output torque to drive current and helps tune analog current loops with predictable response. Electrical behavior is also influenced by a winding inductance of 2.0 mH and a resistance of 0.38 Ω, which affect current rise time and copper heating during load changes. A rotor inertia of 36 × 10⁻⁴ kg·m² supports a balance between responsive acceleration and stable motion under changing loads, while the 110 mm centering diameter helps align the motor accurately with a gearbox or machine mount. The housing mass of 18 kg and the 60-minute thermal time constant help reduce sharp temperature swings during intermittent operation. Incremental encoder feedback provides position data to the drive, and the power connector on side A helps simplify cable routing in compact cabinets.