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What is the meaning of C behind bearing 222 15C?

C stands for meaning: the holder is unique.

222 15C bearing type: self-aligning roller bearing.

Domestic new model: 22215c; ; Domestic old model: 535 15

The inner diameter is 75, the outer diameter is 130, the width is 3 1, and the specification is 75× 130×3 1.

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