Product Description:

The SF-B4.0172.060-10.050 is a brushless servo motor built by Bosch Rexroth Indramat for the SF Servo Motors series. This unit supplies controllable torque and speed to industrial machinery and is intended for integration into CNC tooling, pick-and-place gantries, and conveyor stations that rely on tight motion synchronization. When paired with a compatible drive inverter and closed feedback loop, the motor supports rapid acceleration, accurate positioning, and steady repeatability during cyclic motion. Its brushless design also supports smooth commutation and avoids brush wear during normal operation. This type of motor is commonly used on axes that alternate between short indexing moves and continuous running periods.

A direct current bus of 670 VDC supplies the inverter that excites the windings, and each ampere of phase current produces 0.65 Nm/A of electromagnetic torque. This current-to-torque relationship helps the drive deliver predictable shaft response during acceleration and changing process loads. During startup or while the rotor is mechanically blocked, the unit can draw 26 A and produce a stall torque of 17 Nm, which helps overcome static friction and inertial resistance. These values are especially relevant when the axis must start under load or resist a brief jam condition. Acoustic emissions are limited to 58 dB(A), keeping operation comparatively quiet in general industrial settings.

The motor uses a square mounting interface with a 142 mm flange, allowing it to fit machine plates designed for that bolt pattern. Rated output speed reaches 6000 rpm, supporting high surface velocity on indexing mechanisms and other fast-moving axes while preserving servo responsiveness. An absolute-value encoder supplies multi-turn position data, so the drive can retain position reference after a power interruption without requiring a homing cycle. This feedback method is useful on machines where restart time matters and unexpected repositioning is undesirable. The assembly withstands shocks up to 6 g, and the balanced rotor helps reduce vibration so bearings and coupled components are subjected to lower mechanical stress during abrupt reversals.