Product Description:

The SG-B3.055.049-10.010 is a synchronous servo motor produced by Bosch Rexroth Indramat for the SG Synchronous Servo Motors series. Intended for precision positioning tasks, it delivers controlled rotary motion to packaging machines, pick-and-place axes, and indexing tables. A brushless resolver provides continuous rotor angle data to the drive controller, ensuring tight speed and torque regulation during every motion cycle.

The motor reaches a nominal speed of 4800 rpm, giving machinery builders a high base velocity for rapid point-to-point moves. At standstill, it can develop 5.8 Nm of holding torque, which is enough to maintain the load position before motion starts. Generating that torque requires a standstill phase current of 13.4 A; the selected drive must therefore accommodate this continuous current to prevent thermal overload. The electromagnetic design has a torque constant of 0.45 Nm/A, meaning that almost half a newton-meter is produced for every ampere supplied. A rotor inertia of 0.46 ×10⁻³ kg·m² keeps acceleration times short, allowing fast responses without excessive overshoot when the control loop commands sudden direction changes.

The mechanical interfaces align with IEC standards. The B5 end shield has a centering flange diameter of 140 mm with accuracy grade R, and the housing length without a brake is 170 mm, allowing the unit to fit compact machine frames. Power is transmitted through a smooth shaft measuring Ø24 × 50 mm, simplifying its connection to clamping hubs or friction-fit pulleys. An enclosure rating of IP65 seals the stator against dust and low-pressure water jets, while the stator mass of 7.7 kg adds thermal capacity for intermittent overloads. The motor mounts to the machine in the IM B5 orientation, and wiring is routed directly to the stator because a mating connector is not included.