Product Description:

The SF-A4.0125.015-10.042 is a synchronous servo motor produced by Bosch Rexroth Indramat for the SF Servo Motors series. As a drive element, it converts electrical energy from a matching inverter into controlled rotary motion for positioning, feed, or spindle axes in automated equipment. Its mechanical interface aligns with standardized mounting flanges so the motor can be installed in machine tools, packaging stations, and material-handling systems. The motor is suited for axes that require repeatable speed and position control, and its synchronous design supports stable torque production during normal operation.

The motor has a rated speed of 1500 rpm, which provides a practical baseline for gearing under nominal voltage. A torque constant of 2.8 Nm/A links commanded current to output torque, which helps current-based control remain predictable. During start-up, the drive may draw 5.2 A, and at that current the locked-rotor torque reaches 14.5 Nm when the shaft is held still. Dynamic response is influenced by a rotor inertia of 30 ×10⁻⁴ kg·m², a value that supports responsive acceleration and deceleration. The square mounting face uses a 142 mm flange size, with flange precision class N and balance quality grade N to support smooth coupling. A Ø24 × 50 mm shaft carries the mechanical load, and dual NTC temperature sensors report winding heat to the drive for overload protection.

Overall mass is 16 kg, so the supporting structure must account for both static loading and motion forces during axis movement. The housing length of 277 mm helps the motor fit into compact axis modules while still accommodating its four-pole stator assembly. Electrical termination is handled through a 1 (6-pin) power and feedback connector, which keeps the external connection layout compact. This connector arrangement reduces the number of separate cable entry points at the housing and supports orderly cable routing in tight machine spaces.