Articulus sphaericus GE30DS Bearings GE30 Inserere supportantes Ferens pulvinar Block Alta Groove Ball Ferens Sphaericus Rollerus Ferens Attenuatis Rollerus supportantes Mitte Ball Ferens Cylindrica Rollerus Ferens Alia Type supportantes Hub supportantes Linearibus Rector Ferens Linearibus Motion directe emissiones