Product Description:

The SG-B0.004.076-00.000 is a synchronous servo motor produced by Bosch Rexroth Indramat within the SG Synchronous Servo Motors series. Designed for compact axes, it delivers controlled rotary motion for industrial automation tasks such as small pick-and-place devices, miniature gantries, and spindle orientation modules. Resolver feedback built into the unit enables precise position and speed loops, allowing the associated drive controller to align stator currents accurately during rapid indexing or continuous-duty operation, while the keyed shaft simplifies coupling to timing pulleys or micro gearboxes.

The motor’s nominal speed reaches 7400 rpm, enabling high cycle rates when paired with lightweight tooling. Each ampere applied to the windings produces 0.3 Nm/A of electromagnetic torque, so drive current commands translate linearly into shaft torque. At standstill, the rotor can hold 0.50 Nm, and sustaining that torque requires only 1.7 A, which helps limit inverter size and thermal rise. Dynamic behavior is aided by the small rotor inertia of 0.013×10⁻³ kg·m², allowing fast acceleration and tight following of motion profiles. A brushless resolver mounted on the stator supplies rotor angle feedback without relying on optical components, and the 9 k6 shaft diameter with a machined keyway provides repeatable torque transfer under frequent reversals.

Mechanical integration follows the IM B5 configuration, so the front face bolts directly to a machine plate through a square flange measuring 55 mm. The flange accuracy is class N, ensuring concentricity for low-vibration operation, while a keyed shaft is supplied together with a 3 × 3 × 14 mm feather key for immediate coupling. Axial force on the bearings may reach 75 N without affecting service life, matching the needs of belt drives or preload springs. The housing has an IP 65 rating, and the overall housing length of 123 mm keeps the motor inside tight enclosures.