SG-A3.055.049-13.010 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SG-A3.055.049-13.010 is a brushless servo motor from the SG Synchronous Servo Motors series. It features a nominal speed of 4800 rpm and a static torque of 5.8 Nm, with thermal radiation and natural convection cooling. The motor includes a small integrated holding brake, an IP65 protection category, and a resolver encoder for rotor orientation and spindle speed.
Internal Product Review
The SG-A3.055.049-13.010 is a brushless servo motor that stands out for precise resolver feedback and IP65 protection. Thermal radiation with natural convection supports efficient cooling, while the small integrated holding brake adds dependable axis control. A strong choice for demanding motion applications, especially where 4800 rpm performance is needed.
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Product Description:
The SG-A3.055.049-13.010 is a brushless servo motor produced by Bosch Rexroth Indramat for the SG Synchronous Servo Motors series. Serving as a compact drive source for automated machinery, the unit converts electrical energy into controlled rotary motion for positioning tables, feed axes, and spindle drives that require repeatable motion profiles with tight tolerances. Electronic commutation removes the mechanical brush assembly associated with conventional direct-current motors, reducing wear during frequent speed and direction changes. Closed-loop control allows the connected servo drive to adjust motor current in response to commanded position, speed, and torque.
The motor has a flange diameter of 140 mm and a smooth 24 mm × 50 mm shaft for direct coupling to pulleys or gearboxes. Its IM B5 mounting form also permits IM V1 or IM V3 vertical orientations. The rotor uses SmCo (samarium-cobalt) magnets, which maintain magnetic flux at elevated temperatures and support a continuous static torque of 5.8 Nm at standstill. Under locked-rotor conditions, the windings draw 13.4 A, providing a reference value for selecting a compatible servo drive. During motion, the motor reaches a rated speed of 4800 rpm. An integrated resolver transmits real-time rotor position and speed to the servo controller, enabling accurate commutation and prompt correction of load-induced motion errors.
Thermal management relies on thermal radiation and natural convection, eliminating the need for forced cooling equipment. The winding system has Class F insulation under VDE 0530, supporting reliable operation as internal temperatures change under load. The housing has an IP65 rating, preventing dust ingress and protecting internal components against water jets. The permitted operating temperature range is 0 to 40 °C, which accommodates typical industrial environments without derating. A small integrated holding brake secures the rotor when power is removed, preventing load drift on vertical axes and helping keep stationary equipment in position. The mounting face conforms to Accuracy R, supporting concentric alignment between the motor and driven equipment while reducing avoidable vibration at the coupling.
