Product Description:

The SG-B2.050.038-00.000 synchronous servo motor is manufactured by Bosch Rexroth Indramat as part of the SG Synchronous Servo Motors series. It supplies programmable rotary motion for industrial automation equipment, allowing motion controllers to regulate speed, torque, and shaft angle in closed-loop operation. By converting three-phase drive current into mechanical output, the motor positions loads accurately in packaging lines, assembly stations, and conveyor diverters.

The motor attaches to machinery through a 100 mm centering flange, so couplings and housings that accommodate this frame size can be mounted without shims. During operation, it can reach a nominal velocity of 4300 rpm, providing fast indexing where short cycle times are required. A standstill current of 9.5 A indicates the continuous phase draw when the shaft is held motionless under rated load. With standstill torque rated at 4.7 Nm, the axis can resist static forces while maintaining its commanded position. Electrical demand on the inverter peaks at 2.0 kVA, which helps determine cabinet fusing and cable cross section. The motor body is 172 mm long, and flange accuracy code N indicates normal machining tolerances suitable for general-purpose servo axes.

Dynamic behavior is influenced by a rotor inertia of 0.260 × 10⁻³ kg·m²; this low moment permits rapid acceleration while supporting stable servo tuning. For axial process forces, the motor can sustain up to 150 N without compromising bearing life. The shaft exits the housing with a diameter of 19 mm and a length of 40 mm. It is machined with a keyway and feather key so torque is transmitted positively to gears or pulleys. The motor has a mass of 4.7 kg, which helps with gantry or robot arm payload calculations. A torque factor of 0.54 Nm/A indicates the relationship between current and generated torque. The housing’s IP protection depends on the selected feedback and connector options.