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JB/T 10238-2017 English PDF (JBT10238-2017)
JB/T 10238-2017 English PDF (JBT10238-2017)
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JB/T 10238-2017: Rolling bearings - Automotive hub bearing units
JB/T 10238-2017
MECHANICAL INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 21.100.20
J 11
Registration number: 61241-2018
Replacing JB/T 10238-2011
Rolling bearings - Automotive hub bearing units
ISSUED ON: NOVEMBER 07, 2017
IMPLEMENTED ON: APRIL 01, 2018
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 4
1 Scope ... 7
2 Normative references ... 7
3 Terms and definitions ... 9
4 Symbols ... 9
5 Classification ... 10
6 Coding method ... 11
6.1 Code composition ... 11
6.2 Type code ... 12
6.3 Size code ... 12
6.4 Post-positioned code ... 13
6.5 Example ... 13
7 Basic structure type ... 14
8 Basic size ... 17
9 Technical requirements ... 17
9.1 Materials and heat treatment ... 17
9.2 Tolerance ... 18
9.3 Surface roughness ... 20
9.4 Clearance ... 20
9.5 Residual magnetism ... 20
9.6 Vibration ... 21
9.7 Lubrication and sealing ... 21
9.8 Bolt ... 21
9.9 Friction torque ... 21
9.10 Sensor ... 22
9.11 Appearance quality ... 22
9.12 Service life ... 22
9.13 Others ... 22
10 Fitting installation ... 23
11 Testing method ... 23
12 Inspection rules ... 25
12.1 Exit-factory inspection ... 25
12.2 Acceptance inspection... 25
12.3 Type inspection ... 25
13 Marking ... 26
14 Anti-rust packaging ... 26
15 Transportation and storage ... 26
Appendix A (Normative) Basic sizes of some hub bearing units ... 27
A.1 DAC type hub bearing unit ... 27
A.2 DU type hub bearing unit ... 27
A.3 DACF type hub bearing unit ... 28
A.4 DUF type hub bearing unit ... 28
A.5 DAC2F type hub bearing unit ... 29
Appendix B (Informative) Technical conditions for fitting installation of hub
bearing unit ... 30
B.1 Dimensional tolerance ... 30
B.2 Clearance ... 30
B.3 Tightening torque ... 30
Rolling bearings - Automotive hub bearing units
1 Scope
This standard specifies the terms and definitions, symbols, classification,
designation method, basic structure type, basic size, technical requirements,
matching installation, testing methods, inspection rules, markings, anti-rust
packaging, transportation, storage of the hub bearing unit for passenger
vehicles (hereinafter referred to as the hub bearing unit).
This standard applies to the production, inspection and acceptance of hub
bearing units.
2 Normative references
The following documents are essential to the application of 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) are applicable to this standard.
GB/T 272 Rolling bearing - Identification code
GB/T 307.2-2005 Rolling bearings - Measuring and gauging principles and
methods
GB/T 307.3-2017 Rolling bearings - General technical regulations
GB/T 699-2015 Quality carbon structural steels
GB/T 2828.1-2012 Sampling procedures for inspection by attributes - Part 1:
Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot
inspection
GB/T 2829-2002 Sampling procedures and tables for periodic inspection by
attributes (Apply to inspection of process stability)
GB/T 3077-2015 Alloy structure steels
GB/T 3098.1-2010 Mechanical properties of fasteners - Bolts, screws and
studs
GB/T 3103.1-2002 Essential oils and aromatic extracts - Determination of
residual benzene content
GB/T 3478.1-2008 Straight cylindrical involute splines - Metric module side
fit - Part 1: Generalities
GB/T 3478.5-2008 Straight cylindrical involute splines - Metric module side
fit - Part 5: Inspection
GB/T 4199-2003 Rolling bearings - Tolerances - Definitions
GB/T 5617-2005 Determination of effective depth of hardening after
induction or flame hardening of steel
GB/T 5671-2014 General purpose lithium lubricating grease for automobile
GB/T 6930-2002 Rolling bearings - Vocabulary
GB/T 7811-2015 Rolling bearings - Symbols for physical quantities
GB/T 8597-2013 Rolling bearings - Rust proof packaging
GB/T 18254-2016 High-carbon chromium bearing steel
GB/T 24605-2009 Rolling bearings - Marking for products
GB/T 24606-2009 Rolling bearings - Non-destructive testing - Magnetic
particle testing
GB/T 24610.2-2009 Rolling bearings - Measuring methods for vibration -
Part 2: Radial ball bearings with cylindrical bore and outside surface
GB/T 24610.3-2009 Rolling bearings - Measuring methods for vibration -
Part 3: Radial spherical and tapered roller bearings with cylindrical bore and
outside surface
GB/T 34891-2017 Rolling bearings - Parts made from high-carbon chromium
bearing steels - Specifications for heat treatment
JB/T 5000.15-2007 Heavy mechanical general techniques and standards -
Part 15: Non-destructive inspection of forged steel
JB/T 6639-2015 Rolling bearings - Rubber seals reinforced with a sheet steel
insert - Specifications
JB/T 6641-2017 Rolling bearings - Residual magnetism and its assessment
method
JB/T 7048-2011 Rolling bearing parts - Plastic cage - Specifications
JB/T 7051-2006 Rolling bearing parts - Methods for the measurement and
assessment of surface roughness
dmp1 - dmp2: The difference between the average inner diameters of the two inner
rings in a complete set of bearings;
F: Outer diameter of flange;
G: Diameter of flanged inner ring’s screw hole or bolt’s center circle;
G1: Diameter of flanged outer ring’s screw hole or bolt’s center circle;
I: The distance between the reference end face of the flanged hub bearing unit
of the outer ring to the mounting plane or the distance between the reference
installation planes of the two flanges of the flanged hub bearing units of the
outer ring;
Kea: The radial runout of the guidance installation diameter of the brake end as
relative to the guidance installation diameter of knuckle end;
Kia1, Kia2: The radial runout of a single inner ring of a complete set of bearings;
Kia1 - Kia2: The difference between the tolerance of inner ring’s radial runout;
Ps1: The position degree of bolt;
Ps2: The position degree of threaded hole (plain hole);
Sm1: The perpendicularity of the threaded hole (plain hole) to the mounting
reference plane;
Sm2: The perpendicularity of the bolt to the mounting reference plane;
Sn1, Sn2: The flatness of the mounting reference plane of flange;
Sea: The axial runout of the mounting reference plane of brake end;
ΔDs, ΔD1s: The deviation of installation guidance diameter of flange;
ΔIs: Deviation of distance between the mounting reference planes of two flanges.
5 Classification
5.1 The hub bearing unit is divided as follows according to its structural type
features:
- Double-row angular contact ball hub bearing unit or double-row tapered
roller hub bearing unit;
- Double-row angular contact ball hub bearing unit or double-row tapered
roller hub bearing unit with flanged outer ring;
of hub bearing units shall comply with the provisions of the product drawings.
9.6 Vibration
The vibration of the hub bearing unit shall comply with the provisions of the
product drawings.
9.7 Lubrication and sealing
9.7.1 The hub bearing unit shall be filled with the No.3 automobile general-
purpose lithium-base grease which complies with the provisions of GB/T 5671-
2014. It may also use other greases with comparable or better performance.
Get QUOTATION in 1-minute: Click JB/T 10238-2017
Historical versions: JB/T 10238-2017
Preview True-PDF (Reload/Scroll if blank)
JB/T 10238-2017: Rolling bearings - Automotive hub bearing units
JB/T 10238-2017
MECHANICAL INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 21.100.20
J 11
Registration number: 61241-2018
Replacing JB/T 10238-2011
Rolling bearings - Automotive hub bearing units
ISSUED ON: NOVEMBER 07, 2017
IMPLEMENTED ON: APRIL 01, 2018
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 4
1 Scope ... 7
2 Normative references ... 7
3 Terms and definitions ... 9
4 Symbols ... 9
5 Classification ... 10
6 Coding method ... 11
6.1 Code composition ... 11
6.2 Type code ... 12
6.3 Size code ... 12
6.4 Post-positioned code ... 13
6.5 Example ... 13
7 Basic structure type ... 14
8 Basic size ... 17
9 Technical requirements ... 17
9.1 Materials and heat treatment ... 17
9.2 Tolerance ... 18
9.3 Surface roughness ... 20
9.4 Clearance ... 20
9.5 Residual magnetism ... 20
9.6 Vibration ... 21
9.7 Lubrication and sealing ... 21
9.8 Bolt ... 21
9.9 Friction torque ... 21
9.10 Sensor ... 22
9.11 Appearance quality ... 22
9.12 Service life ... 22
9.13 Others ... 22
10 Fitting installation ... 23
11 Testing method ... 23
12 Inspection rules ... 25
12.1 Exit-factory inspection ... 25
12.2 Acceptance inspection... 25
12.3 Type inspection ... 25
13 Marking ... 26
14 Anti-rust packaging ... 26
15 Transportation and storage ... 26
Appendix A (Normative) Basic sizes of some hub bearing units ... 27
A.1 DAC type hub bearing unit ... 27
A.2 DU type hub bearing unit ... 27
A.3 DACF type hub bearing unit ... 28
A.4 DUF type hub bearing unit ... 28
A.5 DAC2F type hub bearing unit ... 29
Appendix B (Informative) Technical conditions for fitting installation of hub
bearing unit ... 30
B.1 Dimensional tolerance ... 30
B.2 Clearance ... 30
B.3 Tightening torque ... 30
Rolling bearings - Automotive hub bearing units
1 Scope
This standard specifies the terms and definitions, symbols, classification,
designation method, basic structure type, basic size, technical requirements,
matching installation, testing methods, inspection rules, markings, anti-rust
packaging, transportation, storage of the hub bearing unit for passenger
vehicles (hereinafter referred to as the hub bearing unit).
This standard applies to the production, inspection and acceptance of hub
bearing units.
2 Normative references
The following documents are essential to the application of 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) are applicable to this standard.
GB/T 272 Rolling bearing - Identification code
GB/T 307.2-2005 Rolling bearings - Measuring and gauging principles and
methods
GB/T 307.3-2017 Rolling bearings - General technical regulations
GB/T 699-2015 Quality carbon structural steels
GB/T 2828.1-2012 Sampling procedures for inspection by attributes - Part 1:
Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot
inspection
GB/T 2829-2002 Sampling procedures and tables for periodic inspection by
attributes (Apply to inspection of process stability)
GB/T 3077-2015 Alloy structure steels
GB/T 3098.1-2010 Mechanical properties of fasteners - Bolts, screws and
studs
GB/T 3103.1-2002 Essential oils and aromatic extracts - Determination of
residual benzene content
GB/T 3478.1-2008 Straight cylindrical involute splines - Metric module side
fit - Part 1: Generalities
GB/T 3478.5-2008 Straight cylindrical involute splines - Metric module side
fit - Part 5: Inspection
GB/T 4199-2003 Rolling bearings - Tolerances - Definitions
GB/T 5617-2005 Determination of effective depth of hardening after
induction or flame hardening of steel
GB/T 5671-2014 General purpose lithium lubricating grease for automobile
GB/T 6930-2002 Rolling bearings - Vocabulary
GB/T 7811-2015 Rolling bearings - Symbols for physical quantities
GB/T 8597-2013 Rolling bearings - Rust proof packaging
GB/T 18254-2016 High-carbon chromium bearing steel
GB/T 24605-2009 Rolling bearings - Marking for products
GB/T 24606-2009 Rolling bearings - Non-destructive testing - Magnetic
particle testing
GB/T 24610.2-2009 Rolling bearings - Measuring methods for vibration -
Part 2: Radial ball bearings with cylindrical bore and outside surface
GB/T 24610.3-2009 Rolling bearings - Measuring methods for vibration -
Part 3: Radial spherical and tapered roller bearings with cylindrical bore and
outside surface
GB/T 34891-2017 Rolling bearings - Parts made from high-carbon chromium
bearing steels - Specifications for heat treatment
JB/T 5000.15-2007 Heavy mechanical general techniques and standards -
Part 15: Non-destructive inspection of forged steel
JB/T 6639-2015 Rolling bearings - Rubber seals reinforced with a sheet steel
insert - Specifications
JB/T 6641-2017 Rolling bearings - Residual magnetism and its assessment
method
JB/T 7048-2011 Rolling bearing parts - Plastic cage - Specifications
JB/T 7051-2006 Rolling bearing parts - Methods for the measurement and
assessment of surface roughness
dmp1 - dmp2: The difference between the average inner diameters of the two inner
rings in a complete set of bearings;
F: Outer diameter of flange;
G: Diameter of flanged inner ring’s screw hole or bolt’s center circle;
G1: Diameter of flanged outer ring’s screw hole or bolt’s center circle;
I: The distance between the reference end face of the flanged hub bearing unit
of the outer ring to the mounting plane or the distance between the reference
installation planes of the two flanges of the flanged hub bearing units of the
outer ring;
Kea: The radial runout of the guidance installation diameter of the brake end as
relative to the guidance installation diameter of knuckle end;
Kia1, Kia2: The radial runout of a single inner ring of a complete set of bearings;
Kia1 - Kia2: The difference between the tolerance of inner ring’s radial runout;
Ps1: The position degree of bolt;
Ps2: The position degree of threaded hole (plain hole);
Sm1: The perpendicularity of the threaded hole (plain hole) to the mounting
reference plane;
Sm2: The perpendicularity of the bolt to the mounting reference plane;
Sn1, Sn2: The flatness of the mounting reference plane of flange;
Sea: The axial runout of the mounting reference plane of brake end;
ΔDs, ΔD1s: The deviation of installation guidance diameter of flange;
ΔIs: Deviation of distance between the mounting reference planes of two flanges.
5 Classification
5.1 The hub bearing unit is divided as follows according to its structural type
features:
- Double-row angular contact ball hub bearing unit or double-row tapered
roller hub bearing unit;
- Double-row angular contact ball hub bearing unit or double-row tapered
roller hub bearing unit with flanged outer ring;
of hub bearing units shall comply with the provisions of the product drawings.
9.6 Vibration
The vibration of the hub bearing unit shall comply with the provisions of the
product drawings.
9.7 Lubrication and sealing
9.7.1 The hub bearing unit shall be filled with the No.3 automobile general-
purpose lithium-base grease which complies with the provisions of GB/T 5671-
2014. It may also use other greases with comparable or better performance.
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