Product Description:

Bosch Rexroth Indramat manufactures the SF-A4.0125.030-00.019 as part of its SF Servo Motors series. The motor is a compact AC synchronous drive element designed for direct coupling to a digital controller, providing regulated motion for indexing tables, Cartesian robots, and other precision axes in automated production lines. Within the control loop, it converts commanded current into proportionate torque with minimal latency, supporting dynamic cycle requirements in high-throughput cells.

At zero speed, the motor delivers a standstill torque of 12.5 Nm when the drive supplies a standstill current of 10.4 A. The magnetic design yields a torque constant of 1.37 Nm/A, allowing the controller to estimate output torque from measured phase current. During motion, the rotor can reach a rated mechanical speed of 3000 rpm, while the single-turn absolute encoder supplies 8,000,000 increments per revolution to the feedback channel. Encoder accuracy remains at 20 arcsec or better, providing very fine position feedback, and two integrated NTC sensors relay real-time winding temperature so the amplifier can reduce load before thermal limits are reached. The motor length is 277 mm, and the DIN 332-DS M8 center hole supports draw-bar handling during installation.

The housing weighs 16 kg, giving the motor a solid mechanical form while remaining manageable during mounting. Rotor inertia is 30 × 10⁻⁴ kg·m², which suits medium-overload applications and supports controlled acceleration without excessive load on the drive. The output shaft uses a keyed style, and its dimensions are Ø24 × 50 mm; it accepts an A8 × 7 × 40 feather key for torque transmission. A circular flange of Ø130 j6 mm provides the primary locating surface, and the face includes threaded holes aligned to common industry patterns for straightforward installation.