Rolling bearing
    3.
    发明授权
    Rolling bearing 失效
    滚动轴承

    公开(公告)号:US5137375A

    公开(公告)日:1992-08-11

    申请号:US699901

    申请日:1991-05-14

    摘要: A rolling bearing having bearing rings and rolling members wherein at least one of the bearing rings and the rolling members essentially consists of an alloy steel which contains carbide-forming elements. The bearing rings and the rolling members are subjected to carburizing or carbo-nitriding and then hardening to form a rolling surface layer. The content of retained austenite (.gamma..sub.R vol %) in the rolling surface layer is from 20 to 45% by volume and the hardness (Hv) of the rolling surface layer reinforced by dispersion of fine carbides or carbonitrides with an average grain size of from 0.5 to 1.5 .mu.m with regard to the content of the retained austenite (.gamma..sub.R vol %) is within the range of:-4.7.times.(.gamma..sub.R vol %)+920.ltoreq.Hv.ltoreq.-4.7.times.(.gamma..sub.R vol %)+1020.

    摘要翻译: 一种具有轴承环和滚动件的滚动轴承,其中至少一个轴承环和滚动件基本上由含有碳化物形成元件的合金钢组成。 对轴承圈和滚动体进行渗碳或碳氮化,然后进行硬化以形成滚动表面层。 滚动面层中的残留奥氏体含量(γR vol%)为20〜45体积%,通过将碳化硅或碳氮化钛的平均粒径分散而得到的滚动面层的硬度(Hv) 相对于残留奥氏体(γR vol%)的含量为0.5〜1.5μm的范围为:-4.7×(γR vol%)+ 920

    Ball-and-roller bearing
    4.
    发明授权
    Ball-and-roller bearing 失效
    滚珠轴承

    公开(公告)号:US5147140A

    公开(公告)日:1992-09-15

    申请号:US799437

    申请日:1991-11-26

    摘要: A ball-and-roller bearing provided with a bearing ring and rolling element has the surface hardness of at least one of the bearing ring and rolling element of Hv 900 or more and the minimal compression residual stress of 100 kgf/mm.sup.2 or more in the depth from the surface of the bearing ring and/or rolling element to the depth equivalent to a 2% of the mean diameter of the rolling element and at the same time, the bearing is closely sealed to prevent any foreign particles from being ingressed thereinto, thus making possible a significant improvement of its longevity.

    摘要翻译: 设有轴承圈和滚动体的滚珠轴承具有Hv900以上的轴承环和滚动体中的至少一个的表面硬度,并且在最小的压缩残余应力为100kgf / mm 2以上的情况下 从轴承圈和/或滚动元件的表面的深度到相当于滚动元件的平均直径的2%的深度,并且同时密封轴承以防止任何外来的颗粒进入其中, 从而可以显着改善其寿命。