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0前言 因翻边轴瓦在ISO中已另有标准,所以,这次修改时,把翻边瓦从JIS D3102—1976（汽车发动用轴瓦）（以下称旧 JIS）中删掉,于1987年修改为JIS D 3102—1987（汽车发动机轴瓦）（以下简称新JIS）。关于翻边瓦,必须尽早制定出新标准。而这次进行的标准化和新JIS一样,是与ISO一致及与新JIS一致的问题。ISO/TC 123对轴瓦来说范围是非常广泛的,还没有进行细化,而这次制定的JIS的适用范围只限于汽车发动机,因此按下述方针进行标准化。 （1）ISO 6864不只是对汽车,都可用,大部分瓦座内径在40～150mm范围内。而本标准因限于汽车用,当然不能全部采用ISO6864,只能是限定在汽车发动机用的范围内引用ISO。（因此JIS和ISO不是整体的一致,而是部分的一致。） （2）ISO是对形状尺寸的标准化（含尺寸精度）,而材料、测量方法、试验方法、检查方法、质量管理、安装、折卸、损伤、缺陷、术语等另有标准。
0 Foreword Due to the fact that flanged bushings have been further standardized in the ISO, this revision has been deleted by deleting the flanged flange from JIS D3102-1976 (hereinafter referred to as the “Old JIS”) and was amended in 1987 JIS D 3102-1987 (automotive engine bearings) (hereinafter referred to as the new JIS). As regards flanging tiles, new standards must be worked out as soon as possible. This standardization is the same as the new JIS, which is consistent with the ISO and with the new JIS. ISO / TC 123 for the bearing bush is very wide range, has not yet been refined, but the scope of application of the JIS developed this time is limited to automotive engines, so the following guidelines for standardization. (1) ISO 6864 can be used not only for cars, but also for most bushings in the 40 to 150mm range. This standard is limited to automotive use, of course, can not all use ISO6864, can only be limited to the scope of automotive engine reference ISO. (Therefore, JIS and ISO are not the same as the whole, but some are the same.) (2) ISO is the standardization of the shape and size (including dimensional accuracy), and the material, measurement method, test method, inspection method, quality control, Disassembly, damage, defects, terminology and other standards.