Product Description:

The SF-A4.0125.015-14.153 is a servo motor manufactured by Bosch Rexroth Indramat within the SF Servo Motors series. It converts electrical power into controlled mechanical rotation for positioning or speed-regulated axes in automated machinery, and its built-in feedback components let the connected drive regulate motion precisely during continuous or incremental tasks. This arrangement supports repeatable shaft movement in handling, indexing, and similar machine functions where closed-loop control is required. Because the feedback system is integrated into the motor, separate external measuring devices are not required for normal closed-loop operation.

The motor reaches a rated speed of 1500 rpm, which is its steady operating velocity under rated load. At standstill it can develop 12.5 Nm while drawing 5.2 A, showing the available holding torque and the current demand at zero speed. A torque constant of 2.8 Nm/A provides a direct relationship between output torque and phase current. For brief holding or emergency stops, a permanent-magnet brake supplies 18 Nm so the axis can remain fixed when power is removed. The fixed A-side bearing arrangement keeps the rotor axially located, and heat is removed by natural convection without external fans.

The brake is energized with 24 V DC, allowing it to connect to common control power buses used in industrial equipment. During operation, the acoustic emission does not exceed 58 dB(A), which helps limit added machine noise. Mechanical shocks up to 6 g can be tolerated, and the IM B5 flange mounting provides a standardized interface to machine frames or gearboxes. Rotor inertia is 30 × 10⁻⁴ kg·m², which influences acceleration response, and two NTC sensors monitor winding temperature for overtemperature protection. The sensors give the drive an input for protective shutdown or current reduction if winding temperature rises too high.