Product Description:

The SF-A4.0172.030-00.000 is a synchronous drive motor produced by Bosch Rexroth Indramat as part of the SF Servo Motors series. Intended for closed-loop axis control in automated machinery, the unit converts commanded current into precisely metered torque so that positioning tables, gantries, or packaging axes maintain repeatable motion profiles. By integrating an absolute feedback device and a keyed output shaft, the motor serves as a direct mechanical interface between a servo amplifier and the driven load while supporting accurate response during repeated motion cycles.

Its operating characteristics include speed, torque constant, current, and inertia values that help match the motor to the axis. The rated velocity reaches 3000 rpm, which is the maximum speed for continuous duty. Each ampere supplied produces torque according to a constant of 1.38 Nm/A, allowing current commands to be related directly to motor output. If the rotor stalls, the winding can draw 13 A and develop a standstill torque of 18 Nm; these locked-rotor values indicate the highest thermal demand placed on the stator. With a reflected inertia of 0.0040 kg·m², the motor can accelerate quickly without making the load difficult to control. The overall length is 309 mm, and the pilot diameter is ground to 130 mm j6 for accurate seating on the machine frame.

Position feedback is provided by a single-turn absolute encoder that resolves 8,000,000 incr./rev., supporting fine velocity estimation at very low speeds. A flange size of 142 mm matches standard IEC mounting faces and, together with the 24 × 50 mm output shaft, creates a rigid coupling point. The shaft includes an A8×7×40 feather key for positive torque transmission. In service, the assembly weighs 19 kg, which helps the motor remain stable in equipment with frequent starts and stops. This arrangement suits indexing, profile cutting, and other precision automation tasks that depend on repeatable position and smooth low-speed control.