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JB/T 10186-2010Rolling bearings - Matched angular contact ball bearings - Technical requirements (English PDF)

滚动轴承组配角接触球轴承技术条件

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Issued by

MIIT

Level / Type

Industry · Recommended

Issue date

February 11, 2010

Implementation date

July 1, 2010

Scope

JB/T 10186-2010 is the English-translated version of 滚动轴承组配角接触球轴承技术条件.

JB/T 10186-2010 is the Chinese standard "Rolling bearings - Matched angular contact ball bearings - Technical requirements". Its scope clause reads: This Standard specifies the specifications of matched angular contact ball bearings of which the dimensions are in accordance with GB/T 292 (hereinafter referred to as matched bearings).

This Standard is applicable to production inspection, user acceptance and application of the matched bearings. Its clauses include terms and definitions; symbols; technical requirements; measurement methods; inspection rules.

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Document preview — JB/T 10186-2010

National Standard of the People's Republic of China

Replacing: JB/T 10186-2000

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

Foreword4
1 Scope5
2 Normative references5
3 Terms and definitions6
4 Symbols6
5 Types of matching structures7
6 Technical requirements8
6.1 Dimensional tolerance and rotation accuracy8
6.2 Preload, pre-clearance and protruding amount9
6.3 Matching13
6.4 Interchangeability13
6.5 Others13
7 Measurement methods13
8 Inspection rules13
9 Marks14
10 Packaging15
Annex A (normative) Level 4A and level 2A tolerances16
tolerance and shaft and housing18
Figure 1 -- Main matching types of matched bearings7
Figure 2 -- Protruding amount of bearing13
Figure 3 -- Mark of angular line14
Figure 4 -- Marks of maximum value point of Kia, Kea and deltadmp, delta Dmp14
Figure B.118
Figure B.218
Table 1 -- Mutual difference of radial runout of matched bearings9
deltaCS9
Table 3 -- Preloads of matched bearings (DB type and DF type)11
Table 4 -- Preload coefficient value of multi-joint matched bearings11
bearings12
Table 6 -- delta1 +delta212
Table A.1 -- Inner ring of level 4A tolerance16
Table A.2 -- Outer ring of level 4A tolerance16
Table A.3 -- Inner ring of level 2A tolerance17
Table A.4 -- Outer ring of level 2A tolerance17
Table B.1 -- Matching with shaft18
Table B.2 -- Matching with housing bore18
bore19

1 Scope

This Standard specifies the specifications of matched angular contact ball bearings of which the dimensions are in accordance with GB/T 292 (hereinafter referred to as matched bearings).

This Standard is applicable to production inspection, user acceptance and application of the matched bearings.

2 Normative references

The following standards contain the provisions which, through reference in this

Standard, constitute the provisions of this Standard. For dated references, subsequent amendments (excluding corrections) or revisions do not apply to this Standard. However, the parties who enter into agreement based on this

Standard are encouraged to investigate whether the latest versions of these documents are applicable. For undated reference documents, the latest versions apply to this Standard.

GB/T 272-1993, Rolling bearing - Identification code

GB/T 275-1993, Shaft and housing fits for rolling bearings

GB/T 292-2007, Rolling bearings - Angular contact ball bearings - Boundary dimensions

GB/T 307.2-2005, Rolling bearings - Measuring and gauging principles and methods (ISO 1132-2:2001, Rolling bearings - Tolerances - Part 2:

Measuring and gauging principles and methods, MOD)

GB/T 307.3-2005, Rolling bearings - General technical regulations

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

GB/T 7811-2007, Rolling bearings - Symbols for quantities (ISO 15241:2001,

IDT)

GB/T 8597-2003, Rolling bearings - Rust proof packaging

JB/T 2974-2004, Rolling bearings - Identification code - Supplemental regulations

JB/T 3574-1997, Marking for Rolling Bearings Products

JB/T 8921-1999, Rolling bearings and commercial parts - Inspection rules

3 Terms and definitions

For the purposes of this document, the terms and definitions defined in GB/T 6930 as well as the followings apply.

3.1 matched face

end faces of the matched bearings that are close together under preload

3.2 universal matching

matching in any way such as back-to-back, face-to-face or in series

3.3 pre-clearance

axial clearance value preset in the group of bearings after the bearings are matched back-to-back and face-to-face

4 Symbols

The symbols given in GB/T 7811 as well as the followings apply to this document.

dmp1 -dmp2

Mutual difference of average inner diameter between individual bearings in matched bearings

Dmp1 -Dmp2

Mutual difference of average outer diameter between individual bearings in matched bearings

Kia1 -Kia2

Mutual difference of inner ring radial runout between individual bearings in matched bearings

Kea1 -Kea2

Mutual difference of outer ring radial runout between individual bearings in matched bearings

alpha 1 -alpha 2 Mutual difference of contact angle between individual bearings in matched bearings

delta

Protruding amount, i.e., after a preload is applied to an individual bearing, the distance between the end face of one ring and the end face of the other outer ring is at the same end face of the bearing. When protruding, the amount of protrusion is "+" value; when recessed, the amount of protrusion is "-" value.

6 Technical requirements

Matched bearings shall, in addition to GB/T 307.3, also meet the following technical requirements.

6.1 Dimensional tolerance and rotation accuracy

6.1.1

The individual bearing tolerance level in matched bearings shall, for bearings with alpha=15° and alpha=25°, meet the requirements of over level 5 tolerance.

For bearings with alpha=40°, it shall meet the requirements of over level 6 tolerance.

6.1.2

The individual bearing in matched bearings shall be manufactured according to 6, 5, 4, 2 standard tolerance levels. In addition, it may be manufactured according to user requirements, according to special tolerance levels such as 4A, 2A (codenamed P4A, P2A). 2A, 4A tolerances are as specified in Annex A.

NOTE: Other technical requirements for level 4A and level 2A bearings are the same as for level 4 and level 2 bearings.

6.1.3

The mutual dimensional difference between individual bearings in matched bearings shall meet the followings:

a) the mutual difference between inner diameter and outer diameter dmp1 - dmp2 , Dmp1 -Dmp2 shall not be greater than one-third of the dimensional tolerance of the inner and outer diameters;

b) the mutual difference of radial runout between inner ring and outer ring

Kia1 -Kia2 , Kea1 -Kea2 shall be in accordance with Table 1;

c) the mutual difference of contact angle, for bearings with alpha=15° and alpha=25°,

alpha1-alpha2<=1°; for bearings with alpha=40°, alpha1-alpha2<=1.5°.

6.3 Matching

For the matching between matched bearing and shaft and housing, the bearing of level 6 tolerance shall be in accordance with GB/T 275. Refer to Annex B for recommended bearing values for level 5 and above tolerance.

6.4 Interchangeability

Except for the universal matched bearings, the individual bearings in other matched bearings cannot be matched at random, that is, they are not interchangeable.

6.5 Others

When there are other special requirements for matched bearings, it can be determined by the user and the manufacturer.

7 Measurement methods

7.1

The measurement methods for contact angle of matched bearing, protruding amount of the matched face end (both ends for universal matched bearing) as well as axial pre-clearance shall be specified by manufacturer's authority department.

7.2

The measurements of other items shall be in accordance with GB/T 307.2.

8 Inspection rules

8.1 The individual bearing in matched bearings in inspected according to JB/T

8921. The main inspection items for matched bearings also include dmp1 -dmp2 ,

Dmp1 -Dmp2 , Kia1 -Kia2 , Kea1 -Kea2 , alpha 1 -alpha 2 . The acceptance quality level AQL is 1.5.

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

Similar standards

GB/T 32334-2015|JB/T 6362-2023|JB/T 10531-2019|JB/T 13349-2017|JB/T 8717-2010|GB/T 292-2023

Editions of JB/T 10186

Edition	Title	Revision	Status
JB/T 10186-2010	Rolling bearings - Matched angular contact ball bearings - Technical requirements	current edition	Current
JB/T 10186-2000	Rolling bearings - Matched angular contact ball bearings - Technical requirements	previous edition	Superseded

This page sells the current edition, JB/T 10186-2010. Earlier editions are listed for reference only.

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