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Self-aligning Ball Bearings
Bearings for Ball Screw Supports
Cylindrical Roller Bearing For Pulley
Stainless Steel Bearings

Single row seal

3D Physical map

3D CAD diagram

Product Parameters

  • Principal dimensions（mm)
    d 4
    D 9
    B 3.5
  • Basic load ratings (kN)
    Dynamic C 0.54
    Stc Co 0.18
  • Fatigue load limit Pu 0.007
  • Speed ratings(r/min)
    Speed Ratings 140000
    Limiting Speed1) 70000
  • Masskg 0.001
  • Bearing number
    With seals on both sides 628/4-2Z
    With seal on one side -
  • Principal dimensions（mm)
    d 4
    d1
    ～     5.2
    d2
    ～     -
    D2
    ～     7.8
    r1,2
    Min     0.1
  • Abutment and fillet dimensions （mm)
    da
    Min     4.6
    da
    Max     -
    Da
    Max     8.4
    ra
    Max     0.1
  • Calculation Factors
    kr 0.015
    fo 10

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