Product Description:

The SG-B4.270.030-13.010 is a brushless servo motor produced by Bosch Rexroth Indramat for the SG Synchronous Servo Motors series. In automated machinery, this electromechanical unit converts drive current into tightly regulated torque and speed for positioning axes, indexing spindles, or following motion profiles commanded by a drive controller. Its design supports applications where feedback-controlled accuracy, compact mounting dimensions, and sealed construction are required on assembly lines, packaging stations, and metal-cutting equipment.

The motor operates within an ambient temperature range of 0 to 40 °C, so the surrounding cabinet or machine enclosure must maintain suitable conditions. Its IP65 housing blocks dust and resists low-pressure water jets, while the metallic construction provides structural rigidity. Heat leaves the stator through thermal radiation and natural convection, eliminating the need for forced-air or liquid cooling circuits. The motor uses windings with Class F insulation, providing adequate thermal tolerance during operation. The rotor contains SmCo permanent magnets, whose temperature stability helps preserve consistent torque output. For closed-loop control, a resolver embedded in the rear end shield supplies position and velocity feedback to the drive. The brushless design also avoids the routine commutator maintenance associated with brushed motors.

The mounting face is machined to Accuracy R, allowing precise alignment with gearboxes or direct-drive stages without shimming. A smooth shaft transmits torque through friction-locked couplings instead of keys, which helps minimize backlash during bidirectional motion. For vertical axes or emergency stops, a small integrated holding brake grips the rotor when power is removed and maintains the load position until operation resumes. The metallic housing supports rigid mounting under changing loads, while the compact mechanical arrangement helps the motor fit into space-limited machinery. Its mounting and shaft interfaces are suitable for servo systems that require repeatable positioning and secure static load retention.