The Nachi-Fujikoshi SRA250 is a high-performance 6-axis articulated robot optimized for automotive spot welding applications, featuring world's fastest acceleration in its payload class. Its rigid yet lightweight design achieves shorter cycle times with minimal vibration. The hollow arm series provides internal routing for spot welding utilities (cooling water, weld power, signals, servo gun cables), offering extra protection and minimized stress. Equipped with Nachi's advanced FD controller and fourth-generation servo gun software, the SRA250 delivers precise electrode pressure control with calibration up to 10 points and integrated spot weld timer (AC/DC versions).