Product Description:

The SF-B4.0172.060-10.015 servo motor is produced by Bosch Rexroth Indramat as part of the SF Servo Motors series. Intended for closed-loop industrial automation, this permanently excited synchronous machine converts drive power into controlled mechanical rotation. It is suited for pick-and-place arms, web-handling rollers, and other precision axes common on manufacturing lines, where accurate speed and position control are required.

A mounting flange measuring 142 mm provides the reference diameter for centering the housing, while the bearing is seated on the output side to keep axial loads close to the load coupling. The smooth shaft reduces stress concentrations that can occur with keyed connections during reversal. When the rotor is locked, the motor can deliver 17 Nm of static torque and draws up to 26 Arms; these figures help set fuse and drive current limits for stall conditions. Under normal operation, it accelerates toward a rated speed of 6000 min⁻¹, with torque generated per phase current following a constant of 0.65 Nm/A. This current-to-torque relationship supports predictable response during indexing and rapid speed changes. The bearing arrangement and shaft form also support stable coupling in precision motion systems.

The bus supply of 670 V DC links the motor windings to high-power inverters that create a strictly sinusoidal line-to-line back-EMF waveform, which supports smooth torque production. A compact rotor inertia of 40×10⁻⁴ kg·m² allows quick direction changes without excessive controller gain. The construction format identified as IM B5 supports flange mounting without feet, which is useful where radial space is limited. An absolute single-turn encoder is fitted to the stator so the drive can monitor shaft position directly during closed-loop operation.