Product Description:

The SF-A4.0125.015-10.050 is a servo motor produced by Bosch Rexroth Indramat and assigned to the SF Servo Motors series. It converts controlled three-phase power into precise rotary motion for pick-and-place arms, indexing tables, and compact conveyor drives. Integrated digital feedback lets the associated drive regulate position and torque in real time. The motor is suited to repeatable motion where short move times and steady position control are required, and its sealed stator and preloaded bearings support continuous operation in manufacturing cells that run around the clock.

The motor has a rated shaft speed of 1500 rpm. Its electromagnetic design provides a torque constant of 2.8 Nm/A, so phase current is translated directly into useful turning force at the shaft. During a locked-rotor test, the motor produces 14.5 Nm while drawing 5.2 A, values that help match the drive to the application. Rotor position is reported through a multiturn encoder with 8 million increments per revolution, allowing smooth interpolation, stable speed regulation, and accurate synchronization during repeated indexing or transfer motion.

The feedback device has an absolute accuracy of ±20 arcseconds, which supports repeatable positioning in fine assembly systems. Mechanical response is influenced by a rotor inertia of 30 × 10⁻⁴ kg·m², helping the axis remain stable with medium-mass loads during acceleration and deceleration. The motor permits axial loading up to 154 N without exceeding bearing limits, and the enclosure helps keep dust and moisture away from internal components. The housing meets IP67 protection, so temporary immersion and airborne contamination are less likely to interrupt operation. A 142 mm square flange, a 24 mm shaft diameter, and a 50 mm shaft extension support direct machine mounting, while sound output remains below 58 dB(A) for quieter work areas.