标准编号:	JB/T 3123-2007
中文名称:	滚动轴承 滚针和角接触球组合轴承 外形尺寸
英文名称:	Rolling bearings-Combined needle roller bearings with angular contact ball bearings - Boundary dimensions
中标分类:	J11    滚动轴承
行业分类:	JB    机械行业标准
ICS分类:	21.100.20 21.100.20    滚动轴承 21.100.20
发布机构:	国家发展和改革委员会
发布日期:	2007-3-6
实施日期:	2007-9-1
标准状态:	valid
替代旧标准:	JB/T 3123-1991
翻译语言:	英文
文件格式:	PDF

1. Scope This standard specifies the boundary dimensions of two structural types of combined needle roller bearings with angular contact ball bearings (hereinafter referred to as combined bearings). Type NKIA 0000 - the combined needle roller bearings with angular contact ball bearings (see Figure 1); Type NKIB 0000 - the combined needle roller bearings with three-point contact ball bearings (see Figure 2). This standard is applicable to the combined bearings installed and used in the components under large radial load and small single-direction (or double-direction) axial load as well as limited radial dimension.

Contents Foreword I 1. Scope 2. Normative References 3. Terms, Definitions and Symbols 4. Boundary Dimensions Figure 1 Type NKIA 0000 Figure 2 Type NKIB 0000