Product Description:

The SF-A4.0172.030-14.050 is a servo motor produced by Bosch Rexroth Indramat within the SF Servo Motors series. This rotary unit converts electrical power into controlled mechanical motion for positioning and velocity tasks in industrial automation systems such as packaging stations, pick-and-place modules, and indexing tables. It is built for direct coupling to machine shafts and uses the standard flange interface for mounting in multi-axis drive assemblies.

The motor delivers a rated speed of 3000 rpm, allowing synchronous operation with drives that issue high-frequency command signals. A torque constant of 1.38 Nm/A links produced torque to armature current, which helps simplify current-loop tuning in digital controllers. During start-up, the windings can withstand a locked-rotor current of 13 A and produce a locked-rotor torque of 18 Nm, which indicates breakaway capability under static load. The shaft can accept an axial thrust of up to 154 N, supporting belt tension or vertical load without additional bearings. Dynamic response is influenced by rotor inertia of 40 × 10⁻⁴ kg·m², while a shaft diameter of 24 mm and a shaft length of 50 mm provide the contact surface for couplings. Mechanical resilience is shown by 6 g shock resistance, and the 142 mm square flange aligns with standard gearboxes.

The integrated holding brake operates from 24 VDC and draws only 0.7 A, which keeps its power demand low during holding operation. When energized, the brake adds 3.1 × 10⁻⁴ kg·m² of inertia and provides static holding torque to secure vertical axes after shutdown. Overall assembly length, including the brake, reaches 356 mm, and the unit weighs 20.7 kg, which matters when the motor is installed on moving gantries or lift axes. The motor housing also has enough thermal mass to support continuous operation without external cooling accessories.