先进的轴承及密封技术

The Advanced Bearing and Seal Technology

介绍美国铁姆肯（Ｔｉｍｋｅｎ）公司和布兰柯（Ｂｒｅｎｃｏ）公司在轴承与密封方面采用的新技术，效果显著。其中布兰柯公司开发的２０００系列双列圆锥滚子轴承使轴颈缩短，减少轴颈弯曲５８％、减少轴颈应力２８％，并采用了长寿命聚脲润滑脂、高性能塑钢保持架及ＳＴ—２１２型新密封；铁姆肯公司开发的ＡＰ—２型双列圆锥滚子轴承，也缩短了轴颈，改进了ＨＤＬ密封，降低扭矩６６％，平均降低轴温１１℃～１７℃，轴承寿命延长３７％，并增加了自诊断功能。

The new technology in bearing and seal applied by the Timken Company and Brenco Company in the United States of America is decribed.It has notable results.In the 2000 series double row conical roller bearing developed by the Brenco Company,the axle journal is reduced,the journal curve is reduced by 58%,the stress in the journal is reduced by 28%,and the polyurea lubricating grease with long service life,the plastic coated steel retainer with high performance and the ST 212 type new seal are applied;In the AP 2 type double row conical roller bearing developed by the Timken Company,the axle journal is also reduced,the HDL seal is improved,the torque is reduced by 66%,the axle temperature is lowered by 11 ℃～17 ℃ in average,the service life of bearing is prolonged by 37%,and the selfdiagnostic function is added.