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What does B10 life of a vehicle mean?

1 Answers

BrookeRose

07/30/25 7:57am

B10 life is defined as the operating time point of a product. After the product reaches this time point, it is estimated that 10% of the products will experience failures. Engine life: For automotive products, B10 is generally used to indicate the reliability of a vehicle. Initially, B10 was applied to bearings, where 'B' stands for the first letter of 'Bearing', and '10' represents ten percent. An engine's B10 life reaching 1 million km is specific to that particular engine and does not have a concrete standard. This means that 90% of such engines can operate up to 1 million km. Purpose of B10 life: B10 life was originally used to describe the reliability and lifespan of bearings. Through long-term usage, it was observed that the reliability of bearing products gradually declines over time. For example, if a batch of 100 bearings starts operating simultaneously, after prolonged operation, the bearings will enter a period of high failure rates. Beyond a certain time point, almost all of these 100 bearings will begin to fail.

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