Product Description:

The SF-A4.0172.060-10.015 is a synchronous servo motor produced by Bosch Rexroth Indramat as part of the SF Servo Motors series. It is intended for high-speed, high-precision drives in automated machinery, where rapid acceleration and accurate position control are required. By combining a permanent-magnet rotor with an absolute encoder, the unit provides feedback to digital drives, allowing the controller to synchronize motion with other axes and maintain commanded trajectories.

The motor’s nominal performance envelope starts with a rated speed of 6000 rpm, which is the continuous mechanical output velocity available under rated voltage and ambient temperature. A torque constant of 0.65 Nm/A links drive current directly to produced torque, simplifying current-loop tuning. When the shaft is prevented from turning, it can develop a locked-rotor torque of 17 Nm while drawing a locked-rotor current of 26 A. Position feedback is delivered by an optical encoder that generates 8 million increments per revolution, enabling very fine interpolation by the drive. The same encoder maintains an accuracy window of ±20 arcseconds so that repetitive moves end within tight tolerance bands.

A square flange measuring 142 mm provides the reference surface for direct mounting to gearheads or machine frames. The overall housing length is 309 mm, which keeps the motor compact for its class. Rotor inertia is 40 × 10⁻⁴ kg·m², balancing fast response with stable operation, and the total mass is 19 kg, which supports thermal absorption during intermittent overloads. Power and feedback are carried through an 8-pin connector at the rear of the housing, while the 24 mm diameter and 50 mm shaft length support use with standard couplings. A shock resistance rating of 6 g allows installation on machinery subject to abrupt stops.