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GB/T 274-2023Rolling bearings - Chamfer dimension - Maximum values (English PDF)

滚动轴承倒角尺寸最大值

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

May 23, 2023

Implementation date

December 1, 2023

Scope

GB/T 274-2023 is the English-translated version of 滚动轴承倒角尺寸最大值.

GB/T 274-2023 governs the small bevel at the corner of a rolling bearing ring, and it is one of those standards whose brevity is inversely proportional to how often it is needed.

A bearing seats against a shoulder on the shaft or in the housing. The shoulder has a fillet radius, because a sharp internal corner is a stress raiser and would crack; the bearing has a chamfer, because a sharp external corner would be fragile.

For the bearing to seat squarely against the shoulder rather than riding up on the fillet, the fillet must be smaller than the chamfer - and the designer of the shaft is usually not the manufacturer of the bearing.

This document specifies the maximum chamfer dimensions for rolling bearings, and the corresponding single chamfer dimensions for the shaft and housing bore where they mate with the bearing.

It applies to the chamfers of metric series rolling bearings. Under ICS 21.100.20 and CCS J11, it is the reference every machine designer needs when dimensioning a bearing seat, and the one bearing manufacturers work to when producing rings.

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Document preview — GB/T 274-2023

National Standard of the People's Republic of China

ICS: 21.100.20
Classification: J11

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

2 Normative References
3 Terms and Definitions
4 Signs

Foreword

Rolling Bearings - Chamfer Dimension - Maximum Values

13 Table of Contents Foreword ........................................................................................................................ 3Introduction ....................................................................................................................

51 Scope ...........................................................................................................................

62 Normative References.................................................................................................

63 Terms and Definitions .................................................................................................

74 Signs............................................................................................................................

75 Maximum Chamfer Dimension ..................................................................................

Rolling Bearings - Chamfer Dimension - Maximum Values 1 Scope

This Document specifies the maximum chamfer dimension for rolling bearings and the single chamfer dimension for shaft and housing bores where they mate with the bearing. This Document applies to the chamfers of metric series rolling bearings specified in GB/T 273.1-2023, GB/T 273.2-2018, GB/T 273.3-2020, GB/T 305-2019, GB/T 20057-2012, GB/T 20058-2017, and GB/T 20060-2011.

2 Normative References

The provisions in following documents become the essential provisions of this Document through reference in this Document. For the dated documents, only the versions with the dates indicated are applicable to this Document; for the undated documents, only the latest version (including all the amendments) is applicable to this Document.

GB/T 273.1-2023 Rolling bearings - Boundary dimensions general plan - Part 1 : Tapered roller bearings ( ISO 355:2019, IDT)

GB/T 273.2-2018 Rolling bearings - Boundary dimensions general plan - Part 2: Thrust bearings ( ISO 104:2015, IDT)

GB/T 273.3-2020 Rolling bearings - Boundary dimensions general plan - Part 3: Radial bearings ( ISO 15:2017, IDT)

GB/T 305-2019 Rolling bearings - Snap ring grooves and snap rings for radial bearings -Dimensions, geometrical product specifications (GPS) and tolerance values ( ISO 464:2015, MOD)

GB/T 20057-2012 Rolling bearings - Single-row cylindrical roller bearings - Chamfer dimensions for loose rib and non-rib sides (iso 12043:2007, IDT)

GB/T 20058-2017 Rolling bearings - Single-row angular contact ball bearings - Chamfer dimensions for outer ring non-thrust side ( ISO 12044:2014, IDT)

GB/T 20060-2011 Rolling bearings - Cylindrical roller bearings, separate thrust collars -Boundary dimensions ( ISO 246:2007, IDT)

3 Terms and Definitions

For the purposes of this Document, the following terms and definitions apply.

3.1 Radial direction chamfer dimension (of a bearing ring, washer, loose rib or thrust collar) The distance from the imaginary sharp corner of a bearing ring, washer or thrust collar to the intersection BETWEEN the chamfer surface AND the end face of the bearing ring, washer or thrust collar.

3.2 Axial directions chamfer dimension (of a bearing ring, washer, loose rib or thrust collar) The distance from the imaginary sharp corner of a bearing ring, washer or thrust collar to the intersection BETWEEN the chamfer surface AND the inner bore or outer cylindrical surface of the bearing ring, washer or thrust collar.

4 Signs

--- The End - - -

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 355 · ISO 104 · ISO 464 · ISO 12044 · ISO 246

Cited by

Similar standards

GB 38031-2025|GB/T 274|GB/T 274-2000|GB/T 274-1991|GB/T 273.1-2023|GB/T 273.2-2018|GB/T 273.3-2020|GB/T 305-2019

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