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旋转轴在严酷环境中工作时,要防止杂质和其它磨料污染润滑是很困难的,但具有特殊形状的弹性体密封圈可有效地保护高速、高压工作条件下的旋转轴免受污染。弹性体密封圈一侧做成正弦波形,安装时正弦波面向着润滑剂。起初弹性体密封圈处于被压缩状态,当轴不转动时,其作用就象O 形圈;当轴转动时,正弦波曲线把润滑剂压入轴与密封圈之间,产生水上滑行的效果,使密封圈升起脱离旋转轴。轴与密封圈间薄薄的油膜,减少轴转矩的要求以及降低密封圈和轴的磨损。
It is difficult to prevent contaminants from contaminating lubricants with contaminants and other abrasives while the rotary shaft is working in a harsh environment. However, elastomeric seals with special shapes are effective in protecting the rotating shaft from contamination under high-speed, high-pressure operating conditions. Elastic ring made of a sine wave on one side, the installation of sine wave facing the lubricant. Initially, the elastomeric seal is in a compressed state, acting as an O-ring when the shaft is not rotating. As the shaft rotates, the sinusoidal curve presses the lubricant between the shaft and the seal, creating a water gliding effect, Raise the seal off the axis of rotation. Thin oil film between shaft and seal reduces shaft torque requirements and reduces seal and shaft wear.