四点接触球轴承QJ2..-N2根据DIN628-4的主要尺寸，可以拆卸，剖分内圈，带两个止动槽dmmDmmBmmQJ218-N2-MPA9016030QJ219-N2-MPA9517032QJ220-N2-MPA10018034QJ221-N2-MPA10519036QJ222-N2-MPA11020038QJ224-N2-MPA12021540QJ226-N2-MPA13023040QJ228-N2-MPA14025042QJ230-N2-MPA15027045QJ232-N2-MPA16029048QJ234-N2-MPA17031052QJ236-N2-MPA18032052QJ238-N2-MPA19034055QJ240-N2-MPA20036058QJ244-N2-MPA22040065QJ248-N2-MPA24044072dmmDmmBmm)