Product Description:

The SF-A4.0230.060-14.050 is a servo motor manufactured by Bosch Rexroth Indramat within the SF Servo Motors series. Designed for closed-loop motion control, the unit converts electrical energy from a drive into regulated torque and speed for machine tools, packaging lines, and material-handling axes. Its feedback-ready housing and integrated electromagnetic brake allow the controller to hold position when power is removed, which supports vertical loads and frequent start-stop cycles. The motor is well suited for applications that require rapid positioning together with accurate speed and torque control. It can also support repeatable stopping behavior between motion cycles.

The motor has a rated speed of 6000 rpm, and at this velocity the rotor can deliver continuous power without exceeding thermal limits. Torque rises in proportion to phase current, with a torque constant of 0.88 Nm/A, which supports predictable current response in the drive. Mechanical integration uses a square flange measuring 142 mm for connection to IEC-sized gearboxes. The brake circuit operates on 24 VDC, which keeps wiring compatible with common control supplies. Dynamic response is influenced by a rotor inertia of 54 × 10⁻⁴ kg·m²; together with the 388 mm motor length, 24 mm shaft diameter, and 50 mm shaft extension, it balances acceleration capability with shaft stiffness.

When stationary, the electromagnetic brake provides a holding torque of 18 Nm, which helps prevent load drift. For startup or stall conditions, the motor can reach a locked-rotor torque of 22 Nm while drawing a locked-rotor current of 25 A. The bearing set accommodates axial loading up to 154 N, which is useful in screw-driven axes that apply thrust to the shaft. The assembly mass is 23.7 kg, and the brake adds 1.04 kg with 3.1 × 10⁻⁴ kg·m² of inertia while requiring 0.7 A to remain engaged.