Product Description:

The SF-A3.0042.030-14.050 is a servo motor manufactured by Bosch Rexroth Indramat and belongs to the SF Servo Motors series. Designed as a compact rotary actuator for machinery axes, it converts electrical drive signals into precise mechanical motion while supplying position data through its DSF multi-turn encoder. By operating in a closed-loop system, the unit supports coordinated movement in automated assembly lines, packaging equipment, and material-handling stations. Its compact format suits equipment that needs accurate positioning without giving up responsive speed control.

The motor reaches a nominal speed of 4000 rpm, allowing fast cycle times during continuous operation. At standstill, it can deliver 14.5 Nm of continuous torque while drawing a standstill current of 36.6 A, which supports stable static positioning under load. Dynamic overload capacity is supported by a peak current of 164.8 A, enabling short bursts of higher torque when rapid acceleration or brief load changes occur. Electromagnetic conversion is characterized by a torque constant of 0.40 Nm/A, so the torque response remains predictable as drive current changes. The three-phase stator has a winding inductance of 1.9 mH and a winding resistance of 0.20 Ω, and these values affect current response and drive tuning behavior.

A holding brake operated at 24 V DC engages automatically when power is removed, and it provides 11 Nm of static torque to help secure vertical or suspended loads. Mechanical integration is supported by a centering diameter of 110 mm, while the rotor inertia of 29 × 10⁻⁴ kg·m² helps balance quick acceleration with controlled settling. The housing is rated IP65, which helps protect internal components from dust and low-pressure water exposure in industrial environments. The brake current is 0.5 A, and the thermal time constant is 50 minutes, so the motor warms gradually under load rather than reaching peak temperature immediately.