Product Description:

The SF-A4.0125.060-10.050 servo motor is manufactured by Bosch Rexroth Indramat within the SF Servo Motors series. Intended for precision axes in assembly cells, printing equipment, and material-handling gantries, this motor supplies commanded torque while reporting absolute shaft position to the drive controller. Its permanent-magnet rotor is cooled by natural convection, so it can be mounted in sealed cabinets without added airflow hardware. By combining a high permissible bus voltage with rapid feedback, the unit supports fast indexing moves as well as continuous speed regulation under changing loads.

The electrical section operates from a DC link up to 670 V, allowing the connected inverter to deliver full power with minimal current. Under rated conditions, the shaft reaches 6000 rpm, providing the high mechanical speed required for short cycle times. Electromagnetic conversion efficiency is reflected in the torque constant of 0.71 Nm/A; this current-to-torque ratio supports accurate power-stage sizing. During start-up or jam situations, the stator may draw a locked-rotor current of 17 A, producing a stall torque of 12 Nm so loads can be broken free without external gearing. Two integrated NTC sensors track winding temperature and enable the controller to reduce output before insulation limits are reached.

A multi-ring absolute encoder supplies 8 million increments per revolution of digital resolution, and its angular error is contained within ±20 arcseconds to maintain tight position tolerance across the full speed range. The housing withstands lateral impacts up to 6 g, making the motor suitable for machinery subject to tool changes or end-stop contact. Installation follows the flange-mounted IM B5 pattern for face mounting on compatible machine surfaces.