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Can You Identify This Deep Groove Ball Baring Bearing and/or Give an SKF Equivalent?

Engineering Asked by NicholasM on October 7, 2020

I am changing out my motorcycle engine bearings from the Chinese CJB brand to a high quality brand like SKF (Explorer range).

I am still waiting on a heat gun in order to remove the bearings from the engine case, and one bearing has been installed with it’s codes facing into the blind seat.

  1. I do know that its dimensions are 17x47x14mm, so it’s a 6303 series.
  2. All of the other bearings have a C3 fit, so I assume this will as well.
  3. The other bearings all use PA66 or Glass-Fibre Reinforced PA66 cages, but they look quite different to this cage.
  4. All other bearings are Class 6 Precision, so I am assuming this is as well.

Can anyone recognise the type of cage in this bearing? Do you know an SKF-equivalent suffix or prefix, or any brand’s suffix that matches it?

Please let me know if you need any further information.

Thank you,

Nicholas

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