KGG Balles gestationes exteriore annulo, interiore anulo, et pluralitate scutulorum et spacers constant. Summum gyrationis accurate ferre posse onera quaquaversum ferre. Quia orthogonaliter dispositis scutulis cylindricis, onera quaquaversum ferre potest. KGG duo genera partus praebet: Ball alta Groove Ferens et Angularis Contactus Ball Bearings.