GB/T 25760-2010Rolling bearings - Combined needle roller bearings with thrust ball bearings - Boundary dimensions (English PDF)

Foreword

Appendix A of this standard is a normative appendix. The standard proposed by China Machinery Industry Federation.

1 Scope

This standard provides the thrust needle roller and ball bearings (hereinafter referred to as bearings) dimensions.

This standard applies to the combined bearing design and selection.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 274-2000 Rolling maximum chamfer dimensions (idtISO 582.1995)

GB/T 6930-2002 Rolling Vocabulary (ISO 5593:1997, IDT)

3 Terms and Definitions

Terms and definitions GB/T 6930-2002 established apply to this standard.

4 Symbols (see FIG. 1 to FIG. 8, FIG A.1)

The following symbols apply to this standard.

Unless otherwise indicated, the values shown in the figure and symbol are shown in the table indicates the nominal size.

a. distance from the stopper groove ball bearing thrust ring face of the shaft

B. inner width

b. stopper groove width

C. combination bearing width

C1. Oil from the reference plane seat pitch; pitch oil from the outer end surface of the needle roller bearing

D. outer diameter of the needle roller bearings

D1. thrust ball bearing shaft collar outer diameter

D1smax. The maximum outer diameter of a single thrust ball bearing shaft ring

D2. outer diameter of thrust ball bearing race

D3. Thrust ball bearing housing outside diameter

D3smax. Thrust ball bearings single largest outer diameter of the housing

D4. bottom diameter stopper

d. Inner diameter

d1. thrust ball bearing shaft ring inner diameter

F. the inner ring raceway diameter

Fw. inner diameter of the needle group

r. inner ring chamfer dimensions

r1. thrust ball bearing shaft ring, needle roller bearing outer ring chamfer dimensions