SG-B3.100.029-03.000 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SG-B3.100.029-03.000 is a brushless servo motor from the SG Synchronous Servo Motors series with a nominal speed of 3500 rpm and a static torque of 11.2 Nm. It features a resolver encoder for rotor orientation and spindle speed, a holding brake with 24 V DC supply, and is constructed with a 140 mm metallic flange according to IM B5 design. The motor uses SmCo magnet material, offers IP65 protection, and operates in ambient temperatures from 0 to 40 °C.
Internal Product Review
The SG-B3.100.029-03.000 is a brushless servo motor rated for 3500 rpm. Thermal radiation and natural convection cooling, combined with IP65 protection, support dependable performance in demanding machine environments. A resolver for rotor orientation and spindle speed plus a small integrated holding brake make this motor a strong choice for precise motion control.
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Product Description:
The SG-B3.100.029-03.000 is a brushless servo motor developed by Bosch Rexroth Indramat for the SG Synchronous Servo Motors series. In industrial automation, it delivers precise angular positioning and velocity control for ball screws, indexing tables, and robotic joints. A small integrated holding brake secures the load during power loss, supporting repeatable positioning on vertical axes and other applications that require load retention.
At its rated operating point, the motor reaches 3500 rpm, providing rapid cycle times while maintaining a standstill torque of 11.2 Nm for steady load support. This torque is produced with a standstill current of 15.6 A, which the drive must supply during continuous stall operation. The embedded brake operates at 24 V DC ±10%, allowing a standard 24-volt control supply to release it without an additional converter. The enclosure is rated IP65, protecting the motor against dust ingress and low-pressure water jets when it is properly mounted on machinery. Heat leaves the windings through thermal radiation and natural convection, which is compatible with the motor’s Class F insulation system. A resolver provides rotor position and speed feedback to the drive controller for closed-loop operation. The keyed shaft follows DIN 6885 and has dimensions of 24 mm by 50 mm. Flange accuracy grade N supports concentric alignment between the motor frame and connected machinery.
The permissible ambient temperature range is 0 to 40 °C, allowing the motor to operate in typical industrial settings without a separate cabinet. A square flange measuring 140 mm mates directly with compatible planetary gearheads or machine housings. Rare-earth magnets made from SmCo provide strong, temperature-stable magnetic flux for repeatable acceleration. The basic mounting orientation is IM B5, while IM V1 and IM V3 orientations may be used when the shaft faces upward or downward. These mounting options allow the motor to accommodate horizontal and vertical machine layouts without changing its primary operating characteristics.
