Product Description:

The SF-A4.0172.015-14.053 is a synchronous servo motor from Bosch Rexroth Indramat and belongs to the SF Servo Motors series. This motor is built for industrial automation axes that need accurate position and speed control while keeping mechanical size compact. It integrates an electromagnetic holding brake so machinery can maintain a commanded position when the drive is de-energized.

The brake secures loads with a holding torque of 18 Nm; this is the maximum static resisting moment the brake can apply to prevent shaft rotation. To energize the brake, the drive must supply only 0.7 A, minimizing current demand on the control supply. Electrical activation occurs at 24 VDC, matching the common safety extra-low-voltage rail in many control panels. During motion, the rotor can reach a rated speed of 1500 rpm, a moderate velocity that suits gearless direct-drive applications. The stator is designed for a DC link voltage of 670 V, so the connected inverter must provide this intermediate bus level to deliver rated torque across the full speed range. Brake inertia, brake mass, and a residual torque ripple of 5% further describe dynamic behavior and can affect motion response.

The mechanical resilience of the motor is highlighted by its ability to withstand shocks up to 6 g without loss of calibration, an important attribute for presses or pick-and-place gantries that experience abrupt impacts. Service intervals are extended by a documented minimum operating life of 20000 h, which helps reduce scheduled downtime in continuous-duty installations. Acoustic emissions are rated at 58 dB(A), which supports use on manufacturing lines where lower noise is preferred. The housing follows the IM B5 construction code, indicating a flange-mounted layout that simplifies alignment to gearboxes or machine frames while keeping the motor body outside the bearing block area.