Product Description:

The SF-A4.0172.030-10.019 belongs to the SF Servo Motors series from Bosch Rexroth Indramat. It is a synchronous servo motor intended for industrial automation axes that need precise torque control and immediate position feedback. The compact B5 mounting style helps it fit machines such as pick-and-place stations, feeders, and small transfer modules where repeatable rotary motion is required. Because the encoder provides absolute position information, the control system can read shaft position after startup without a homing cycle. Its layout suits compact axes that perform short, repeated moves and need stable position reporting throughout operation.

The power stage is matched to a DC link of 670 V, so the motor can operate on the same high-voltage bus as adjacent drives. Feedback is supplied by an absolute encoder that resolves each mechanical revolution into 8 million increments/rev.; its optical system retains position with a precision of 20 angular seconds to support tight servo loops. The electromagnetic design produces a torque constant of 1.38 Nm/A, allowing the controller to estimate load torque directly from phase current. Mechanical coupling is handled by a shaft that measures 24 × 50 mm, which supports standard couplings while keeping overhung load low. When the rotor is blocked, the motor can deliver 18 Nm of torque, which is useful when checking stall capability or sizing related mechanical components.

A locked-rotor current of 13 A indicates the phase demand during startup or other high-load conditions. Under normal conditions, the motor reaches a rated speed of 3000 rpm, aligning with common servo gearbox ratios. The flange diameter of 142 mm matches standard mounting dimensions, and the IM B5 construction allows direct face mounting to a machine wall or adapter plate. That arrangement helps keep the drive train short and rigid in compact machine layouts. With a rotor inertia of 40 × 10⁻⁴ kg·m², the axis can accelerate quickly while still supporting smooth low-speed control for indexing and vision-guided tasks. This helps the axis respond quickly without sacrificing controlled motion at low speed.