Cylindrical roller bearing
    11.
    发明申请
    Cylindrical roller bearing 有权
    圆柱滚子轴承

    公开(公告)号:US20050069239A1

    公开(公告)日:2005-03-31

    申请号:US10952714

    申请日:2004-09-28

    摘要: A cage of a cylindrical roller bearing includes an annular section, a plurality of pillars that extend axially in an integrated, continuous manner from the inside surface of the annular section, and a plurality of pockets, which are formed between the inner circumferential direction side faces of adjacent pillars, and hold the cylindrical rollers in a freely rotatable manner. The circumferential direction side faces of the pillars incorporate a circular arc surface formed in both the inside and outside diameter directions from the pocket PCD which passes through the pocket center of the pocket, and a roll-off section (lubricant reservoir) provided at the tip end inner circumferential section.

    摘要翻译: 圆柱滚子轴承的保持架包括环形部分,从环形部分的内表面以一体连续的方式轴向延伸的多个支柱以及形成在内圆周方向侧面之间的多个凹部 并且以可自由旋转的方式保持圆柱滚子。 柱的圆周方向的侧面包括从穿过口袋的凹穴中心的口袋PCD的内径和外径方向形成的圆弧面,以及设置在尖端处的滚降部(润滑剂储存器) 端部内圆周截面。

    Bearing for main spindle of machine tool
    12.
    发明授权
    Bearing for main spindle of machine tool 有权
    轴承主轴机床

    公开(公告)号:US06485581B2

    公开(公告)日:2002-11-26

    申请号:US09969880

    申请日:2001-10-04

    IPC分类号: C23C826

    摘要: A bearing for use in the main spindle of a machine tool is provide, in which at least the raceway of the bearing contains by mass, C: 0.6-1.3%, Si: 0.3—3.0%, Mn: 0.2-.5%, P: 0.03% or less, S: 0.03% or less, Cr: 0.3-5.0%, Ni: 0.1-3.0%, Al: 0.050% or less, Ti: 0.003% or less, O: 0.0015% or less, N: 0.015% or less; and the rest is composed of Fe and unavoidable impurities. The raceway is tempered after either quenching or carbonitriding and its surface hardness presents at least HRC 58 after tempering.

    摘要翻译: 提供一种用于机床的主轴的轴承,其中至少轴承的滚道含有C:0.6-1.3%,Si:0.3-3.0%,Mn:0.2-5.5% P:0.03%以下,S:0.03%以下,Cr:0.3〜5.0%,Ni:0.1-3.0%,Al:0.050%以下,Ti:0.003%以下,O:0.0015%以下,N :0.015%以下; 其余由Fe和不可避免的杂质组成。 在淬火或碳氮共渗后,回转钢轨,回火后其表面硬度至少为HRC 58。

    Method for preparing 4,4'-biphenol
    15.
    发明授权
    Method for preparing 4,4'-biphenol 失效
    制备4,4'-联苯酚的方法

    公开(公告)号:US5324868A

    公开(公告)日:1994-06-28

    申请号:US66180

    申请日:1993-05-24

    CPC分类号: C07C37/50

    摘要: 4,4'-Biphenol is prepared through debutylation of 3,3', 5,5'-tetra-tert-butyl-4,4'-biphenol in an organic solvent in the presence of an acid catalyst wherein the debutylation is carried out continuously using at least two reactors aligned in series, with a high yield and high purity on an industrial level.

    摘要翻译: 在酸催化剂存在下,在有机溶剂中,通过3,3',5,5'-四叔丁基-4,4'-联苯酚的丁基化制备4,4'-联苯酚,其中进行脱丁基化 连续使用串联排列的至少两个反应器,在工业上具有高产率和高纯度。