Product Description:

The SF-A4.0172.030-00.019 is a servo motor manufactured by Bosch Rexroth Indramat within the SF Servo Motors series. As an electromechanical actuator, it converts commanded current into controlled angular motion for positioning axes, feed drives, or tooling stations in automated machinery. The motor uses a keyed shaft to simplify coupler alignment and deliver repeatable torque response in closed-loop drive systems. It is typically paired with Indramat digital drives that regulate speed and torque from encoder feedback, allowing precise interpolation and rapid cycle transitions on packaging, printing, or material-handling lines.

The motor has a 142 mm flange size, which fits standard machinery interfaces without adapter plates. During normal operation, it reaches a rated speed of 3000 rpm, which suits common spindle and conveyor requirements while keeping mechanical stress within normal limits. Its electromagnetic design yields a torque constant of 1.38 Nm/A, so each ampere from the drive amplifier produces predictable mechanical output for current-loop control. When the shaft is prevented from turning, the unit can withstand a locked-rotor torque of 18 Nm and draws a locked-rotor current of 13 A. These values show the short-term load the motor and drive must handle during stall conditions.

Dynamic performance is influenced by an inertia of 40 × 10⁻⁴ kg·m² measured with the encoder installed, which supports quick acceleration without requiring excessive servo gain. The housing weighs 19 kg, and that mass helps add thermal stability and vibration damping after the motor is mounted. The overall body length is 309 mm without a brake, which helps the motor fit into compact machine spaces. Accurate alignment at the gearbox is supported by a 130 mm j6 pilot diameter, and the keyed A8 × 7 × 40 shaft transmits torque without slip. These dimensions make the motor suitable for installations that need consistent positioning and controlled rotary output.