Product Description:

Bosch Rexroth Indramat manufactures the SF-A5.0700.020-04.000, an AC servo motor in the SF Servo Motors series. The unit converts controlled electrical energy into rotary motion for positioning, feed, and speed-regulation tasks on automated machinery. As part of a closed-loop drive, it provides precise torque and speed control so that machine tools, handling axes, and packaging stations can reach programmed setpoints without adding mechanical backlash to the drivetrain. This supports repeatable motion in both short indexing moves and steady production cycles. Its fully enclosed construction allows installation directly on factory frames beside sensors and pneumatic actuators.

It integrates an electromagnetic holding brake that is energized from a 24 VDC supply and draws 1.33 A during release. The flange measures 190 mm, giving a mounting interface compatible with standard gearbox patterns, and its square geometry simplifies perpendicular mounting on machine frames. Position feedback is generated by a single-turn absolute STG encoder that outputs 8 million increments per revolution, allowing the drive controller to resolve motion down to very small steps and maintain accurate position feedback during speed changes. During continuous motion, the rotor can run at 2000 rpm, and torque is produced at a rate of 2.0 Nm/A, which simplifies current-based control calculations. The housing is sealed to IP67, so internal components remain protected against dust ingress and temporary immersion.

Brake force, starting torque, and rotor inertia describe how the motor behaves under load and during rapid speed changes. The brake holds the shaft with 56 Nm when power is removed; its inertia is 30 × 10⁻⁴ kg·m², and the brake assembly adds 3.8 kg to the overall mass. For startup events, the stator may momentarily draw 34 A to generate a locked-rotor torque of 69 Nm. The active rotor contributes a mass moment of 257 × 10⁻⁴ kg·m², which helps balance responsiveness and speed stability. Power is transmitted through a shaft that measures Ø32 × 58 mm and is machined with a keyway and feather key so couplings can be aligned without slippage.