The meaning of the end face "NN" of the tile axis product

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The meaning of the end face "NN" of the tile axis product

Source: China Bearing Network Time: 2014-05-12
/*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
NN stands for the bearing produced in 2000. Detailed production month; able to check the bearing certificate. The symbol of the year has been clarified in recent years: production in 1998; JF, 1999; JJ, 2000; NN, 2001; NY, 2002; 2003; NS, 2004; NI.
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