Product Description:

The SF-A4.0230.030-00.000 is a three-phase permanent-magnet motor built by Bosch Rexroth Indramat for the SF Servo Motors series. Within an automated cell, the unit delivers controlled rotary motion for indexing tables, pick-and-place heads, or gantry axes that depend on tight feedback loops. An integrated absolute encoder and a keyed output shaft allow the motor to interface directly with precision reducers or belt drives while the drive controller manages current and position.

Electrical performance centers on a bus rating of 670 V; the connected inverter regulates this link voltage to energize the windings according to the torque constant of 1.57 Nm/A. Under locked-rotor testing, the shaft withstands 22 Nm while drawing 14 A, providing a reference point for stall monitoring. During continuous operation, the rotor can reach 3000 rpm, and acceleration behavior is influenced by a moment of inertia of 54 ×10⁻⁴ kgm². The 341 mm housing length positions the stator coils in a compact envelope, and the keyway with feather-key coupling transfers torque without slip. These values set the torque-speed operating range used by the drive for current limiting, field weakening, and braking ramps.

Position feedback is provided by a single-turn absolute encoder with an angular precision of 20 arcsec and a resolution of 8 million increments per revolution, allowing the controller to close loops with sub-micron linear accuracy when coupled to fine-pitch screws. The motor mass of 22 kg contributes to thermal capacity and vibration damping inside the machine frame. A shaft diameter of 24 mm extends 50 mm in length and is machined for a keyway that mates with an A8×7×40 feather key, matching the keyed hub on gearboxes. Mounting uses an IEC square flange of 142 mm, which supports installation on compatible machine interfaces.