Panasonic N510015533AA Ball Spline for CM402 8 Head Unit The Panasonic N510015533AA Ball Spline for CM402 8-Head Unit is a precision mechanical spare part used in compatible Panasonic CM402 SMT placement head assemblies. The ball spline supports controlled linear movement while maintaining stable mechanical guidance during repeated head operating cycles. In SMT production, the placement head performs continuous high-speed movements during component pickup, positioning, and