SF-A4.0125.030-00.000

The Bosch Rexroth Indramat SF-A4.0125.030-00.000 belongs to the SF Servo Motors series and represents a premium brushless servo solution. It is equipped with an STG/MTG Encoder and delivers a Locked Rotor Current of 14.5 Nm, ensuring robust startup performance. With a Rated Speed of 3000 rpm and a Shaft Option featuring a keyway and feather key (without mating connector), this motor is designed to provide precise motion control in high-demand industrial automation systems. Its primary function is to convert electrical energy into mechanical torque with high efficiency and minimal friction, making it ideal for closed-loop positioning and dynamic motion tasks.

Detailed technical specifications underscore the SF-A4.0125.030-00.000’s advanced design. The integrated STG/MTG Encoder offers high-resolution feedback for accurate speed and position monitoring. The Locked Rotor Current of 14.5 A defines the motor’s capacity to overcome initial inertia, while the Rated Speed of 3000 rpm represents its optimal operating point for maximum mechanical output. The carefully machined shaft with keyway and feather key ensures secure torque transmission and prevents slippage under load. This servo motor employs a sinusoidally distributed winding in its stationary part to produce a smooth back EMF waveform, reducing torque ripple and enhancing controllability. Featuring a brushless, three-phase design, it attains mechanical output efficiencies up to 90% by minimizing moving part friction and thermal losses.

Additional features include a robust construction that resists mechanical shocks and an absence of a holding brake to maximize flexibility in system integration. The motor’s compact frame, measuring 277 mm in length and weighing 16 kg, balances power density with manageable mass for easier mounting. Thermal protection is provided by integrated thermistors that continuously monitor winding temperature, safeguarding the motor against overheating. The shaft’s keyway and feather key configuration ensure compatibility with standard couplings and gears without the need for additional connectors. In industrial applications, the SF-A4.0125.030-00.000 delivers reliable, repeatable performance, exceptional efficiency, and long service life—making it an ideal choice for precision machinery, robotics, and automated production lines.