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Parts Number

  • 3478/3420
  • Inquiry

    Product Information

    Designations

    3478/3420

    Boundary Dimensions

    d 34.925 mm Bore diameter
    D 79.375 mm Outside diameter
    T 29.37 mm Total width
    B 29.771 mm Width of inner ring
    C 23.812 mm Width of outer ring
    Cup r (min.) 3.3 mm Chamfer dimension of outer ring (Cup)
    Cone r (min.) 3.5 mm Chamfer dimension of inner ring (Cone)

    Basic Load Ratings

    Cr 108000 N Basic dynamic load rating
    C0r 106000 N Basic static load rating

    Speeds

    Grease 4800 min-1 Grease lubrication
    Oil (Oil-bath) 6700 min-1 Oil-bath lubrication

    Abutment and Fillet Dimensions

    da 50 mm Diameter of shaft abutment
    Da 67 mm Diameter of housing abutment
    db 43.5 mm Diameter of shaft abutment
    Db 74 mm Diameter of housing abutment
    ra (max.) 3.5 mm Radius of shaft or housing fillet of inner ring
    ra (max.) 3.3 mm Radius of shaft or housing fillet of outer ring

    Calculation factors

    e 0.37 Constant
    Y0 0.9 Axial load Factors
    Y1 1.6 Axial load Factors

    Mass

    CONE (approx.) 0.448 kg
    CUP (approx.) 0.259 kg
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