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
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 of JB/T 3123-2007
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