Product Description:

The SF-B5.0250.020-00.000 is a brushless servo motor produced by Bosch Rexroth Indramat for the SF Servo Motors series. Designed for closed-loop positioning and velocity tasks in automated machinery, this motor couples directly to gearboxes, ball screws, or linear tables to convert electrical commands into controlled mechanical rotation. Its B5 flange construction aligns with the European IM code for face-mounted installations. Because it is brushless, it avoids brush wear and supports stable commutation during continuous cycling. The motor can be paired with a servo amplifier that uses encoder feedback to correct position error as load conditions change.

The motor presents a 190 mm square flange that aligns with IM B5 face-mount layouts, and its overall length is 300 mm. A nominal speed of 2000 rpm keeps linear axes within common drive bandwidths, while the electromagnetic design delivers a torque constant of 2.3 Nm/A, which helps the amplifier translate current into predictable torque output. During locked-rotor testing, the stator applies 23 Nm and draws 10 A. Position data come from a single-turn STG encoder with an accuracy of ±20 arcseconds, and wiring passes through a 6-pin power and feedback connector on the housing. The Ø32 × 58 mm keyed shaft transfers torque to couplings without slip during repeated starts and stops.

The encoder delivers 8 million increments per revolution, giving the controller fine interpolation without external multipliers. Dynamic response is shaped by a rotor inertia of 83 × 10⁻⁴ kg·m², so the axis can accelerate quickly while remaining stable under changing loads. An IP67 enclosure helps keep dust and temporary immersion from reaching internal windings when the seals remain intact. With a mass of 24 kg, the motor adds moderate load to machine structures while still supporting rigid mounting. In packaging and transfer systems, that mass can also help damp small mechanical disturbances from couplings and belt drives.