Product Description:

The MAC041B-0-BS-4-E belongs to the MAC AC Servo Motors series manufactured by Bosch Rexroth Indramat. As a motor for analog drives, it turns amplifier commands into precise shaft rotation and supports closed-loop position and speed control in automated pick-and-place units, packaging axes, and light conveying stations. Its compact B frame and 041 length help reduce installation space while maintaining the mechanical interface used across the series. This format is suited to machine sections where available mounting space is limited.

The motor delivers a continuous torque of 1.35 Nm when supplied with 4.40 A of armature current, and this operating point indicates the steady-load thermal limit. Natural convection removes heat without external fans, so mounting position and surrounding air clearance remain important for cooling. Rated speed reaches 6000 rpm, giving high linear throughput when the motor is paired with belt or screw transmissions. Below 4710 rpm, the motor can provide constant torque, while above that point the drive must regulate power to limit temperature rise. Feedback is available through tacho feedback or an incremental or absolute encoder, allowing analog controllers to monitor velocity and position directly. The design can also withstand transient demands up to 5.20 Nm of peak torque, which helps during indexing and short acceleration periods.

Rotor inertia is 1.30 × 10⁻⁴ kg·m², which supports rapid reversals without imposing excessive drive current during every change in direction. A duty factor of 25% indicates the allowed on-time before a rest period is required, making the motor suitable for intermittent packaging or feeder service. The torque constant is 0.310 Nm/A, showing the relationship between armature current and produced torque. The built-in tachogenerator outputs 0.75 V/1000 rpm to the velocity loop, providing an analog speed signal for the connected drive. For brief overloads, the motor can furnish 2.7 Nm, and at maximum speed the available shaft torque remains 3.0 Nm.