Product Description:

The SF-A4.0125.060-00.000 is a rotary servo motor engineered by Bosch Rexroth Indramat and included in the SF Servo Motors series. Designed for integration with Rexroth digital drives, it supplies closed-loop rotational motion to positioning tables, pick-and-place axes, and high-speed spindles used in automated machining and assembly cells. By translating controlled three-phase current into precise shaft motion, the motor delivers the repeatability and acceleration required for cycle-time-critical industrial operations. Its mechanical interface follows international flange standards, allowing straightforward mounting in multi-axis gantries and robotic systems.

The motor reaches a rated speed of 6000 rpm, while torque rises linearly with current according to a constant of 0.71 Nm/A. When the shaft is blocked, it can withstand a stall torque of 12 Nm that corresponds to a locked-rotor current of 17 A. The rotating mass is limited by a rotor inertia of 30 × 10⁻⁴ kg·m², supporting fast acceleration with minimal drive overshoot. Mounting features include a 142 mm square flange, a 130 mm j6 pilot, and a 24 mm k5 shaft that is 50 mm long and keyed to the A8×7×40 profile for secure coupling. Overall motor length measures 277 mm, allowing compact installation in confined machine frames.

Position feedback is supplied by a single-turn absolute STG encoder that produces 8 million increments per revolution with an accuracy of ±20 angular seconds, enabling the controller to achieve micron-level path precision without external sensors. The housing is sealed to IP67, except at the output flange where the shaft exits, so contaminants and coolant splash do not compromise internal windings. With a mass of 16 kg, the motor balances structural rigidity with manageable handling during machine assembly.