Product Description:

The SF-A2.0041.030-04.050 servo motor is built by Bosch Rexroth Indramat and belongs to the SF Servo Motors series. It serves as an electromechanical actuator for closed-loop motion axes in industrial automation where precise speed and torque control are required. In this role, it converts drive commands into controlled rotary motion for indexing tables, feed axes, and other synchronized machine functions. Closed-loop operation lets the paired drive correct speed or position deviations as load conditions change during a cycle. It is used in packaging, printing, and material-handling equipment that require repeatable starts, stops, and positional accuracy.

The motor accepts a DC link of 670 V from the drive. Under that supply, the rotor reaches a rated speed of 3000 rpm while generating 4.1 Nm of standstill torque. The motor has a torque constant of 1.43 Nm/A, allowing current-based control loops to predict output precisely. High-resolution position feedback is provided by an optical encoder that delivers 8 million incr./rev, and the unit’s ±20 arcsec accuracy helps keep cumulative error low in multi-axis assemblies. This feedback lets the drive monitor shaft position in real time during interpolation and speed regulation. Two NTC temperature sensors feed thermal data to the drive for overload protection. A keyed shaft transmits torque without slip, the IM B5 flange supports foot-free installation, and wiring uses series-specific connectors with the mating half not included.

An integrated holding brake supplies 3.2 Nm at 120 °C and is energized by 24 VDC ±10% from the control cabinet. During engagement, it draws 0.56 A and releases rapidly so the axis can move without delay. Continuous current at rest is limited to 2.8 Arms, matching the thermal capacity of the 100 mm flange and stator laminations. With this mechanical interface, the motor couples directly to gearboxes or pulleys while preserving alignment.