2650| 3
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單列圓錐滾子軸承同一型號(hào),各個(gè)廠家的總厚度怎么不一樣? |
點(diǎn)評(píng)
外圓內(nèi)孔那是一樣的,就是總高度(內(nèi)圈外端面到外圈外端面)不一樣
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