Product Description:

The SF-B4.0125.060-10.050 servo motor is produced by Bosch Rexroth Indramat as part of the SF Servo Motors series. It is an electromechanical actuator intended for closed-loop industrial automation where precise torque and speed regulation are required to position loads quickly and repeatably on production machinery. Encoder-based control and temperature monitoring support stable motion during frequent starts, stops, and direction changes. This type of motor is commonly paired with a servo drive that continuously corrects speed and position error under changing load.

This model is energized from a bus voltage of 670 VDC, giving the drive electronics adequate margin to generate high dynamic torque. At its nominal operating point, the rotor can reach 6000 rpm, which supports rapid indexing cycles in high-throughput stations. Motion feedback is supplied by an absolute encoder whose resolution is 8 million incr./rev., and the same feedback device provides position data with an accuracy of ±20 arcsec. With a torque constant of 0.71 Nm/A, the motor develops predictable load torque per ampere. The flange uses the IM B5 mounting style for attachment to gearboxes or machine frames, and thermistors supervise winding temperature so drive-side protection can respond before insulation limits are exceeded.

The mechanical section has a reflected inertia of 0.0030 kg·m², so acceleration commands translate into quick speed changes without excessive control lag. During start-up, the shaft can deliver a locked-rotor torque of 12 Nm while drawing a locked-rotor current of 17 A, which helps determine the required protection and cable capacity. These startup values are relevant when the motor must overcome static friction or a loaded transmission at standstill. Shock loads up to 6 g are tolerated, allowing installation on equipment subject to intermittent impacts. No mating connector is supplied, which lets the user choose field-compatible plugs or route the flying leads directly to terminal blocks.