The rubber band (5) is connected with the ring-shaped end of the wheel rib connecting piece (32).

在轮筋连接件(32)的环状端部与橡筋(5)连接。

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SHOULDER: Defect found on rib or outer diameter; a raised edge on rib face caused by grinding wheel; raised surface at either end of outer diameter raceway.

挡肩：外径或挡肩上发现的缺陷；挡肩上由于磨床砂轮所造成的突起；在外径滚道两端的突起。

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Geometric accuracy and semblance quality were required seriously during grinding outer ring raceway and rib of bearing synchronistically, common corindon grinding wheel was not very effective.

轴承外滚道及挡边同步磨削时几何精度和外观质量要求高，普通刚玉类砂轮加工效果不好。

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