Product Description:

The SD-B4.140.020-14.000 is a servo motor built by Bosch Rexroth Indramat for the SD Magnet Motors series. It functions as a torque-controlled rotary actuator in industrial automation lines, where closed-loop control modules command current to establish precise shaft position and velocity for packaging, material handling, or indexing assemblies. Its operating role suits machinery that needs repeatable motion with stable torque response during acceleration, dwell, and repositioning. In coordinated axes, the motor responds to changing current commands so the surrounding control system can manage starts, stops, and holding phases with predictable output.

The unit uses a square mounting interface that measures 142 mm across the flange, so it fits machines that follow common IEC spacing. The square flange also helps maintain alignment between the motor face and the mating machine plate during installation. Inside the stator, a Ferrite permanent-magnet set provides the excitation field and offers stable magnetic flux without relying on rare-earth materials. The rotor is set for a nominal mechanical speed of 2000 rpm, matching drive inverters that supply moderate frequency ranges while still allowing rapid cycle times. Load coupling is performed through a cylindrical shaft measuring ø 24 × 50 mm, which provides a practical balance between torsional stiffness and bearing support. When energized but motionless, the motor develops 14.0 Nm of torque at standstill, allowing static load holding on vertical or tensioned axes in many rated applications.

Because it is a brushless servo motor, commutation is electronic, which removes brush wear from the design. This arrangement supports smooth torque production and avoids the contact wear associated with brushed motor construction. The motor is intended for use with compatible servo amplifiers, and its standard configuration follows the baseline electrical and mechanical arrangement for the model. That layout helps it fit into automated systems that require controlled rotary motion without added mechanical switching parts inside the motor.