The Bosch Rexroth Indramat SF-A4.0230.030-10.030 from the SF Servo Motors series features an STG/MTG encoder integrated directly on the brushless rotor, ensuring high-resolution feedback and precise position control. This servomotor delivers a locked rotor current of 22 A and runs at a rated speed of 3000 min⁻¹ under a nominal D.C. link voltage of 670 V. Its basic version smooth shaft, without mating connector provides a streamlined interface for custom couplings. Constructed on a low-contamination aluminum frame, the design includes multiple installation pockets along the motor’s length for automatic alignment and optimization during assembly.
Thermal performance is enhanced by the sinusoidal e.m.f. winding topology and a calculated torque constant of 1.57 Nm/A, translating electrical input directly to mechanical output with minimal ripple. The motor’s moment of inertia of 54×10⁻⁴ kg·m² and flange diameter of 142 mm contribute to rapid dynamic response and smooth acceleration. A shaft diameter of 24 mm and shaft length of 50 mm accommodate standard couplings and feedback devices, while the overall mass of 25 kg ensures structural stability under transient loads. The stator frame is designed for compatibility with the Servodyn D inverter platform, simplifying integration into existing drive trains.
For safe operation, a control voltage of 24 V DC ±10% is required to release the optional holding brake, preventing unintentional rotation during power-off conditions. Compact yet robust, the SF-A4.0230.030-10.030 offers a high torque-density package for applications that demand precise motion control and reliable service life. Its combination of advanced encoder technology, optimized mechanical specifications, and proven Bosch Rexroth Indramat quality makes it ideal for machine tools, robotics, and high-performance automation systems.
Encoder
STG/MTG
Locked Rotor Current
22
Rated Speed
3000
Shaft Option
Basic Version Smooth Shaft, w/o Mating Connector