SF-A3.0093.030-04.000

SF Servo Motors

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The SF-A3.0093.030-04.000 is a synchronous servo motor produced by Bosch Rexroth Indramat for the SF Servo Motors series. It serves as a rotary actuator in industrial automation, converting drive current into tightly controlled shaft motion for indexing tables, packaging axes, and material-handling gantries where sealed construction and precise torque delivery are required.

Dynamic performance starts with a rated speed of 3000 min⁻¹, allowing the shaft to follow fast command profiles without step loss. Each ampere of phase current produces 1.35 Nm/A, a torque constant that simplifies drive tuning and current-limit calculations. The rotor, including its encoder hub, has an inertia of 16 ×10⁻⁴ kg·m², balancing acceleration response against overshoot. During start-up the motor can develop a locked-rotor torque of 8.1 Nm while drawing 6.0 A, useful for static holding or press-fit cycles. An IP housing classified at IP67 resists dust ingress and temporary immersion, so the 19 mm-diameter, 40 mm-long shaft can operate in wash-down zones. Mechanical data include a 116 mm square flange, a 287 mm overall length without brake, and a mass of 12 kg, permitting direct replacement in modular machine frames.

For power-off restraint the integrated holding brake supplies 10.0 Nm at elevated coil temperature, driven from a 24 VDC supply and regulated by a coil current of 0.66 A. The brake module adds only 0.60 kg to the assembly and contributes a rotational inertia of 1.06 ×10⁻⁴ kg·m², so dynamic response remains near that of the base motor. These braking figures support vertical or safety-critical axes that must maintain position when the servo drive is disabled.