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Ceramic ball bearing
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New energy vehicle bearing
304 stainless steel roller bearing
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SUS304 stainless steel bearing
Stainless steel deep Groove ball bearing
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Stainless steel 420 material bearing
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Stainless steel stamped bearing with seat
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Stainless steel micro bearing
440 stainless steel deep groove ball micro bearing
Stainless steel micro thrust ball bearing
Special custom bearing
Special custom bearing
High temperature bearing
High temperature bearing
Food and beverage bearing
Food and beverage bearing
Low-temperature bearing
Low-temperature bearing
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  • Bearing number 31308 F21
  • Boundary dimensions (mm)
    d 40
    D 90
    T 25.25
    Inner ring height 23
    Outer ring height 17
    R min 2
    r min 1.5
  • kg 0.73
  • Basic Load Ratings (kN)
    Cr 8.14
    Cor 9.64
  • Limiting speed
    Grease 3800
    Oil 5300
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