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。
2
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。
3
The reinforcing rib arranged in the corrugated outer wall adopts a hollow structure.