Rolling bearings - Needle roller bearings for universal joints
1 Scope
This standard specifies the symbols, coding methods, structural styles, basic dimensions, technical requirements, measurement methods, inspection rules, marking, rust prevention and packaging of cross-shaft needle roller bearings without inner ring for universal joints (hereinafter referred to as needle roller bearings for universal joints).
It is applicable to the production, inspection and acceptance of needle roller bearings for universal joints.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 307.2-2005 Rolling bearings - Measuring and gauging principles and methods
GB/T 309-2000 Rolling bearings - Needle rollers
GB/T 700-2006 Carbon structural steels
GB/T 3077-2015 Alloy structure steels
GB/T 5671-2014 General purpose lithium lubricating grease for automobile
GB/T 7811-2015 Rolling bearings - Symbols for physical quantities
GB/T 8597-2013 Rolling bearings - Rust proof packaging
GB/T 9450-2005 Steels - Determination and verification of the depth of carburized and hardened cases
GB/T 18254-2002 High-carbon chromium bearing steel
GB/T 18579-2001 High-carbon chromium bearing steel wires
GB/T 24605-2009 Rolling bearings - Marking for products
GB/T 24608-2009 Inspection rules for rolling bearings and commercial parts
GB/T 25744-2010 Metallographic examination for carburizing quenching and tempering of steel parts
JB/T 1255-2014 Rolling bearings - Parts made from high-carbon chromium bearing steels - specifications for heat treatment
JB/T 6050-2006 Generalization of hardness test for heat treated iron and steel parts
JB/T 6639-2015 Rolling bearings - Skeleton rubber seal - Specifications
3 Symbols
For the purposes of this document, the symbols given in GB/T 7811-2015 and the following apply.
B: nominal bearing width.
b: nominal width of outer ring.
b0: effective bottom thickness of outer ring.
b1: distance between the inner bottom surface and the stop groove of outer ring.
C: bottom plate groove width of outer ring.
Foreword i
1 Scope
2 Normative references
3 Symbols
4 Coding method
4.1 General
4.2 Front code
4.3 Basic code
4.4 Post code
4.5 Label example
5 Structural styles and basic dimensions
6 Technical requirements
6.1 Material and heat treatment
6.2 Needle roller
6.3 Tolerance
6.4 Surface roughness of roller path surface, outer cylindrical surface and outer bottom surface
6.5 Total circumferential clearance of needle roller group
6.6 Sealing performance
6.7 Lubrication performance
6.8 Minimum torque borne by the cover plate and outer ring of spot welded cover plate needle roller bearings for universal joints after welding
6.9 Others
7 Measurement methods
7.1 Minimum single inner diameter deviation of needle roller group
7.2 Radial circular runout of matching outer ring of needle roller bearings for universal joints
7.3 Total circumferential clearance of needle roller group
7.4 Minimum torque borne by the cover plate and outer ring of spot welded cover plate needle roller bearings for universal joints after welding
7.5 Heat treatment quality
8 Inspection rules
9 Marking, rust prevention and packaging
Figure 1 Type WW…RS
Figure 2 Type WW…PP2
Figure 3 Type WN…T
Figure 4 Type WN…PP2
Figure 5 Type WN…RS
Figure 6 Type WY…ZC
Figure 7 Type WY…RS
Figure 8 Type WT…RS
Figure 9 Type WT…PP2
Figure 10 Type WD…PP2
Figure 11 Type WD…RS
Figure 12 Structure of cover plate
Figure 13 Measurement method of radial circular runout
Table 1 Front code
Table 2 Post code
Table 3 Basic dimensions of outside circlips type needle roller bearings for universal joints
Table 4 Basic dimensions of inside circlips type needle roller bearings for universal joints
Table 5 Basic dimensions of pressure plate type needle roller bearings for universal joints
Table 6 Basic dimensions of loose back plate type needle roller bearings for universal joints
Table 7 Basic dimensions of spot welded cover plate type needle roller bearings for universal joints
Table 8 Tolerance of outer ring
Table 9 Width deviation
Table 10 Minimum single inner diameter deviation of needle roller group
Table 11 Deviation of assembly chamfer
Table 12 Inspection items
Rolling bearings - Needle roller bearings for universal joints
1 Scope
This standard specifies the symbols, coding methods, structural styles, basic dimensions, technical requirements, measurement methods, inspection rules, marking, rust prevention and packaging of cross-shaft needle roller bearings without inner ring for universal joints (hereinafter referred to as needle roller bearings for universal joints).
It is applicable to the production, inspection and acceptance of needle roller bearings for universal joints.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 307.2-2005 Rolling bearings - Measuring and gauging principles and methods
GB/T 309-2000 Rolling bearings - Needle rollers
GB/T 700-2006 Carbon structural steels
GB/T 3077-2015 Alloy structure steels
GB/T 5671-2014 General purpose lithium lubricating grease for automobile
GB/T 7811-2015 Rolling bearings - Symbols for physical quantities
GB/T 8597-2013 Rolling bearings - Rust proof packaging
GB/T 9450-2005 Steels - Determination and verification of the depth of carburized and hardened cases
GB/T 18254-2002 High-carbon chromium bearing steel
GB/T 18579-2001 High-carbon chromium bearing steel wires
GB/T 24605-2009 Rolling bearings - Marking for products
GB/T 24608-2009 Inspection rules for rolling bearings and commercial parts
GB/T 25744-2010 Metallographic examination for carburizing quenching and tempering of steel parts
JB/T 1255-2014 Rolling bearings - Parts made from high-carbon chromium bearing steels - specifications for heat treatment
JB/T 6050-2006 Generalization of hardness test for heat treated iron and steel parts
JB/T 6639-2015 Rolling bearings - Skeleton rubber seal - Specifications
3 Symbols
For the purposes of this document, the symbols given in GB/T 7811-2015 and the following apply.
B: nominal bearing width.
b: nominal width of outer ring.
b0: effective bottom thickness of outer ring.
b1: distance between the inner bottom surface and the stop groove of outer ring.
C: bottom plate groove width of outer ring.
Contents of JB/T 3232-2017
Foreword i
1 Scope
2 Normative references
3 Symbols
4 Coding method
4.1 General
4.2 Front code
4.3 Basic code
4.4 Post code
4.5 Label example
5 Structural styles and basic dimensions
6 Technical requirements
6.1 Material and heat treatment
6.2 Needle roller
6.3 Tolerance
6.4 Surface roughness of roller path surface, outer cylindrical surface and outer bottom surface
6.5 Total circumferential clearance of needle roller group
6.6 Sealing performance
6.7 Lubrication performance
6.8 Minimum torque borne by the cover plate and outer ring of spot welded cover plate needle roller bearings for universal joints after welding
6.9 Others
7 Measurement methods
7.1 Minimum single inner diameter deviation of needle roller group
7.2 Radial circular runout of matching outer ring of needle roller bearings for universal joints
7.3 Total circumferential clearance of needle roller group
7.4 Minimum torque borne by the cover plate and outer ring of spot welded cover plate needle roller bearings for universal joints after welding
7.5 Heat treatment quality
8 Inspection rules
9 Marking, rust prevention and packaging
Figure 1 Type WW…RS
Figure 2 Type WW…PP2
Figure 3 Type WN…T
Figure 4 Type WN…PP2
Figure 5 Type WN…RS
Figure 6 Type WY…ZC
Figure 7 Type WY…RS
Figure 8 Type WT…RS
Figure 9 Type WT…PP2
Figure 10 Type WD…PP2
Figure 11 Type WD…RS
Figure 12 Structure of cover plate
Figure 13 Measurement method of radial circular runout
Table 1 Front code
Table 2 Post code
Table 3 Basic dimensions of outside circlips type needle roller bearings for universal joints
Table 4 Basic dimensions of inside circlips type needle roller bearings for universal joints
Table 5 Basic dimensions of pressure plate type needle roller bearings for universal joints
Table 6 Basic dimensions of loose back plate type needle roller bearings for universal joints
Table 7 Basic dimensions of spot welded cover plate type needle roller bearings for universal joints
Table 8 Tolerance of outer ring
Table 9 Width deviation
Table 10 Minimum single inner diameter deviation of needle roller group
Table 11 Deviation of assembly chamfer
Table 12 Inspection items
