Product Description:

The SF-B5.0460.020-04.000 is a servo motor manufactured by Bosch Rexroth Indramat for the SF Servo Motors series. It is intended for closed-loop positioning and velocity tasks in industrial automation, where precise electromechanical conversion is needed to move tooling, conveyors, or axes under CNC or PLC control. The motor integrates a single-turn absolute encoder so controllers always know rotor position at power-up, and its rated speed supports moderate to high throughput on assembly lines and material-handling gantries. This arrangement is useful in systems that need repeatable starts after power cycling and stable motion during continuous operation.

The flange follows the DIN 42948 size of 190 mm, and a shaft sized at 32 × 58 mm carries couplings or pulleys without excess deflection. Total rotating inertia with the encoder fitted is 166 × 10⁻⁴ kg·m², giving predictable acceleration when combined with the electromagnetic torque constant of 2.2 Nm/A. During commanded stops, the integrated holding brake supplies 56 Nm of static torque so vertical loads remain suspended even after drive power is removed. The brake draws 1.33 A at its rated current, and brief standstill checks are permitted within the operating limits stated in the data sheet.

The brake adds 3.8 kg to the motor, bringing total mass to 35 kg and increasing the load carried by the mounting structure. Dynamic surges are handled by a peak start current of 21 A, while the system survives static stalls up to 46 Nm without demagnetization. A dedicated supply of 24 VDC energizes the brake coil, isolating safety holding from the main power bus. The brake’s own inertia is 30 × 10⁻⁴ kg·m², so deceleration remains manageable in indexing and stop-and-hold motion.