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  • Smallest mini bearing with 10-12mm height

    Discussion in 'The main mechanical design forum' started by tonyctsiu, Feb 20, 2014.

    1. tonyctsiu

      tonyctsiu New Member

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      Does any body know if there is any manufacturer who make smallest bearing at 10-12mm height
      I am looking for it for long time for my design but no luck.
      Preferably the outer diameter of the bearing is some where near 8 mm.

      Direction of Movement: Rotational at 20000 RPM Max
      Load: 100gram only ( small load)
       
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    3. Lochnagar

      Lochnagar Well-Known Member

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    4. tonyctsiu

      tonyctsiu New Member

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      The Bearing 8- 10mm Outer Diameter with height = 10-12 mm --- rather a tall & narrow

      Dear Lochnagar,

      Thank you for your reply.
      But the bearing is rather a tall bearing.
      I can see most tall bearing are for linear movement rather than for rotation.

      Thank you,

      Tony Chun Tung Siu
       
    5. PierArg

      PierArg Well-Known Member

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    6. Lochnagar

      Lochnagar Well-Known Member

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      Hi Pier,

      I had a quick look through the website you posted a link too - and as far as I can see the maximum surface speed is between 2 and 2.5m/s. To achieve that surface speed limitation - would imply a maximum diameter of 1.9 to 2.4mm.

      It is an interesting link though - because that is a high surface speed for a dry bush.
       
    7. Dana

      Dana Well-Known Member

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      What you want is a needle roller bearing, in some configurations called a "drawn cup bearing".
       
    8. PierArg

      PierArg Well-Known Member

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      You are right!

      I thought it was 2000 rpm....now i see it is 20.000 rpm

      With this surface speed the bushings are not so suitable...but you can ask to the manufacturer for special high speed bushings.
       
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