Product Description:

The SF-A2.0020.030-10.051 servo motor is produced by Bosch Rexroth Indramat as part of the SF Servo Motors series. It is a brushless synchronous machine intended for closed-loop axis control in industrial automation where accurate speed and torque regulation are required. Acting as the rotary element of a drive package, it converts controlled current from an inverter into motion for positioning tables, pick-and-place modules, and light conveyor stations. A flange pattern that follows type IM B5 enables direct mounting to gearboxes or machine frames without intermediate plates. This arrangement supports compact machine layouts where the motor must sit close to the driven load and respond quickly to command changes.

The inverter that feeds this motor operates on a DC bus of 670 V, which sets the available voltage for the drive system during operation. Under rated conditions, the shaft reaches 3000 min⁻¹, linking commanded electrical frequency to a predictable mechanical speed. The electromagnetic circuit supplies 1.5 Nm/A, so the controller can relate phase current to delivered torque. If the rotor is prevented from turning, the stator can develop up to 2.0 Nm while drawing only 1.3 A. A smooth 14 mm shaft with a 30 mm engagement length reduces fretting at the hub and simplifies seal installation.

During operation, the bearing set tolerates an axial load of 70 N, allowing moderate thrust transmission from lead screws or helical gears. Rapid acceleration is supported by a rotor inertia of 3 × 10⁻⁴ kg·m², which helps reduce servo lag in high-cycle indexing. The assembly withstands impacts up to 6 g, making it suitable for machinery exposed to sudden stops or transport shocks, and it weighs only 5.5 kg, which makes the motor easier to handle. The housing length is 198 mm, the pilot diameter is 95 mm, and the motor uses a smooth shaft profile. This combination suits compact axes that require quick reversals and steady positioning in repetitive motion tasks.