Product Description:

The SF-A5.0460.030-00.066 is a synchronous servo motor manufactured by Bosch Rexroth Indramat within the SF Servo Motors series. Designed for automated machinery, it delivers accurately regulated torque and speed to linear or rotary axes under the command of a compatible drive. Digital servo feedback built into the unit reports rotor position for tight control, and the power connector is located on side B to simplify cabinet wiring. The motor is supplied without a blocking brake, so applications that require fail-safe holding must rely on external mechanical restraints.

In continuous operation the stator windings can supply 19.5 Nm of standstill torque while drawing 45.3 A of current, allowing the axis to hold loads without overheating. When motion is commanded, the rotor reaches the rated speed of 4000 min⁻¹ where output power and efficiency are optimized for typical servo cycles. For short acceleration bursts the inverter may deliver up to 204.0 A, supporting rapid indexing or disturbance rejection. The electromagnetic design yields a torque constant of 0.43 Nm/A, so every ampere from the drive produces nearly half a newton-meter of torque.

Mechanical attributes complement the electrical ratings. Theoretical overload capability peaks at 60.6 Nm, giving headroom for sudden load spikes. System responsiveness is aided by the rotor inertia of 42 × 10⁻⁴ kg·m², a value that balances swift acceleration with sufficient damping for smooth settling. The stator coils present an inductance of 1.6 mH, limiting current ripple and easing drive tuning, while a winding resistance of 0.14 Ω keeps copper losses low. Thermal behavior is characterized by a constant of 50 min, and with a mass of 22 kg plus a centering diameter of 110 mm the housing provides adequate heat storage and straightforward drivetrain alignment.