Product Description:

The SG-A3.150.024-00.000 is a brushless servo motor produced by Bosch Rexroth Indramat within the SG Synchronous Servo Motors series. Designed for precision axis control in machine tools and automated assembly equipment, it uses resolver feedback with a closed-loop drive so position and velocity can be regulated in real time. The motor is supplied without a holding brake, so an external mechanical clamp must retain the load after power is removed. During operation, the permanent-magnet rotor provides responsive torque control for direct-coupled positioning axes, indexing tables, and similar automated machinery.

During continuous operation, the rotor reaches a nominal speed of 2700 rpm, an operating point that informs the electrical frequency and gear ratio requirements of the drive train. A static torque of 16.6 Nm is available at standstill, providing the starting force needed for direct-coupled lead screws or indexing tables. To produce this torque, the windings draw a standstill current of 18.2 A, which must be considered when selecting cables, contactors, and drive inverters. The housing is sealed to IP65, preventing dust ingress and protecting the stator against low-pressure water jets that can occur during coolant washdown. Samarium-cobalt magnets with the material code SmCo give the rotor high coercive strength and stable magnetic flux at elevated temperatures, improving servo stiffness and reducing the risk of demagnetization.

Thermal energy leaves the frame through radiation and natural convection, so no external fan is required when the ambient temperature remains within 0 to 40 °C. The mechanical interface uses the IM B5 mounting pattern, while vertical installation in the IM V1 or IM V3 orientation is also permitted. Class F insulation supports winding temperatures up to 155 °C and accommodates the thermal demands associated with cyclic loading. A precision flange with a diameter of 140 mm and accuracy grade N centers the motor on the connected gearbox, while vibration severity grade N helps limit transmitted oscillations. Mechanical power is transmitted through a 24 mm by 50 mm shaft with a keyway and feather key made according to DIN 6885, while the resolver monitors the rotor angle for position and speed feedback.