Product Description:

The SF-B5.0460.020-00.000 servo motor is manufactured by Bosch Rexroth Indramat as a member of the SF Servo Motors series. This three-phase permanent-magnet unit converts drive inverter current into controlled mechanical rotation for positioning and velocity loops in industrial automation equipment. By combining an integrated feedback device with a high torque-to-mass ratio, the motor serves as a direct-coupled actuator that reduces transmission backlash and maintains precise motion in assembly lines, material-handling axes, and process stations. Its design is suited for applications that need repeatable movement during frequent starts, stops, and speed changes.

At a rated speed of 2000 rpm, the electromagnetic circuit delivers continuous velocity suitable for moderate-speed feed drives and other controlled axis movements. If the shaft is blocked, it can withstand a locked-rotor torque of 46 Nm while drawing a locked-rotor current of 21 A, which helps match the motor to a compatible drive. The winding torque constant is 2.2 Nm/A, which indicates the mechanical torque obtained for each ampere in the linear current range. Position error is limited by an encoder precision of ±20 arcseconds, allowing tight servo loops and accurate response during short indexing moves.

An allowable axial load of 380 N can be applied through the Ø32 × 58 mm shaft without exceeding bearing limits, and the standard flange measures 190 mm for direct mounting to gearboxes or machine frames. Overall length is 383 mm without a holding brake, and the motor weighs 35 kg, which is relevant when the unit is installed on cantilevered axes or compact supports. Internal feedback uses a single-turn absolute encoder with 8 million increments per revolution, so the controller receives high-density position data immediately after power-up. The rotating assembly has a rotor inertia of 166 × 10⁻⁴ kg·m², which supports stable speed regulation during load changes and acceleration phases.