• 幸运28

    25-year production experience

    d:
    D:
    B:
    7900 Series

    7900 Series

    Dimension and Parameters

    Bearing Numbers
    Single row :7900A5
    DB :7900DB
    DF :7900DF
    DT :7900DT
    Principal dimensions(mm)
    d :10
    D :22
    B :6
    r(min) :0.3
    r1(min) :0.15
    Basic load ratings(N)
    Cr :2880
    Cor :1450
    Basic load ratings(kgf)
    Cr :294
    Cor :148
    Value
    fo :14.7
    Limiting Speed (rpm)
    Grease :40000
    Oil :56000
    Distance of action point(mm)
    a :6.7
    Abutment and fillet dimensions
    da(min) :12.5
    Da(max) :19.5
    ra(max) :0.3
    Weight
    (kg) :0.009
    Basic load ratings(duplex bearing) (N)
    Cr :4700
    Cor :2900
    Basic load ratings(duplex bearing) (kgf)
    Cr :475
    Cor :296
    Limiting Speed(duplex bearing) (rpm)
    Grease :32000
    Oil :43000
    Distance of action point (duplex bearing)(a0)
    back-to-back arrangement :13.5
    face-to-face arrangement :1.5
    Installation dimensions(duplex bearing)
    db(min) :-
    Db(max) :20.8
    rb(max) :0.15
    幸运28