Product Description:

The SF-A4.0125.030-10.019 is a brushless servo motor built by Bosch Rexroth Indramat within the SF Servo Motors series. This permanently excited unit converts energy from a DC bus into controlled rotation for positioning tables, pick-and-place modules, and other automated stations that require repeatable motion. Its sinusoidal back EMF supports smooth velocity control, and the integrated absolute encoder provides immediate position feedback to the controller. These features make the motor suitable for multi-axis packaging, assembly, and material-handling equipment where stable motion response is important.

At its rated operating point, the motor reaches a speed of 3000 rpm, matching common inverter outputs for medium-duty servo tasks. Electromechanical conversion is characterized by a torque constant of 1.37 Nm/A, so each ampere of phase current produces that amount of steady torque. The drive must supply a DC link of 670 VDC, which supports high power density while limiting conductor size. During startup, the shaft can develop a locked-rotor torque of 14.5 Nm and draw a corresponding locked-rotor current of 10.6 A, so the connected power stage and coupling must be sized accordingly.

The integrated absolute encoder delivers 8 million increments per revolution and holds position accuracy within ±20 angular seconds, enabling tight contouring and quick settling after motion commands. Thermal supervision is provided by 2 NTC sensors in the winding overhangs, allowing the drive to reduce load before critical temperatures are reached. Mechanical installation follows the IM B5 flange pattern, permitting direct face mounting to gearboxes, pumps, or linear stages without intermediate brackets. This layout supports compact integration in servo-driven machinery that depends on accurate feedback and stable mounting.