Product Description:

The SD-B4.140.030-00.010 is a compact magnetic servo unit built by Bosch Rexroth Indramat and supplied within the SD Magnet Motors series. As a brushless motor, it converts drive commands from a compatible servo controller into controlled rotary motion for gantries, indexing tables, and packaging axes. The design supports precise positioning because torque is generated electronically rather than through mechanical commutation. That operating principle also reduces wear at the motor interface and helps maintain consistent motion during frequent starts, stops, and rapid direction changes. Because rotor motion is managed by the servo controller, the motor can respond quickly to command changes in synchronized automation tasks.

Central mounting uses a flange diameter of 142 mm, so the motor mates with gearboxes or machine plates that share this metric interface. The output shaft measures 24x50 mm, which provides a clear reference for coupling dimensions and bore depth. A shaft with keyway and featherkey secures the driven load against slip under alternating torque and repeated reversals. The rotor uses Ferrite magnets, a material choice that affects magnetic flux and temperature response during continuous duty. Under rated conditions, the rotor reaches 3000 rpm, giving the connected controller a speed range suited to conveyor motion, indexing tasks, and pick-and-place cycles. The flange and shaft dimensions also help determine mounting depth and coupling selection during machine layout.

At zero speed, the motor can deliver a holding torque of 14.0 Nm, which helps resist static load while the axis remains at standstill. As a brushless servo motor, it uses electronic commutation instead of brushes, which supports repeatable torque output and reduces maintenance related to contact wear. Stable holding performance depends on an energized control loop, so the connected servo controller must continue regulating current whenever the application requires standstill force. This behavior is useful on indexing stations and transfer axes where repeatable stop points matter. It also allows the motor to pause accurately between moves and resume motion without hesitation.