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Tolerance

    The bearing tolerance is classified as Class 2,4,5,6 and 0 in accordance with the Chinese national standard GB/T307-94.The table as below makes a comparison between this classification of tolerance with Chinese national standard GB307-84 as well as ISO standard.

Standard 

Classification of tolerance

GB307-84 B C D E G
GB/T307-94 2 4 5 6 0
ISO 2 4 5 6 0
ASA ABEC9 ABEC7 ABEC5 ABEC3 ABEC1
SKF P2 P4 P5 P6 0
 
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