JB/T 7915-1995 Needle roller bearing thrust needle roller and cage assembly, thrust washer JB/T7915-1995 standard download decompression password: www.bzxz.net

UDC621.822.82
National Standard of the People's Republic of China
GB-48054
JBh 7915-95
Needle roller bearings-Thrust needle roller andcage assemblies, thrust washersPublished on August 1, 1984
Implemented on May 1, 1985
National Bureau of Standards
National Standard of the People's Republic of China
Needle roller bearings-Thrust needle roller andcage assemblies, thrust washersUDC 621.822.82
GB4605-84
This standard is equivalent to the international standard 1SO3031-1979 "Needle bearings-Thrust needle roller and cage assemblies, thrust washers-Dimensions and tolerances", and adds technical requirements for combined parts. 1
Scope of application
This standard specifies the dimensions, tolerances and some technical requirements of thrust needle roller and cage assemblies and thrust washers (which can be used as both shaft washers and seat washers).
Reference standard
GB307.1-84 "Tolerances of rolling bearings"
GB307.2-84 "Rolling bearings
GB307.3-84 "Methods for measuring tolerances of rolling bearings"
General technical requirements"
GB309-84 "Needle roller bearings"
3 Symbol
Thrust needle roller and cage assembly
(Type 889000)
De: Nominal outer diameter of cage
D. 1 Nominal inner diameter of cage
Dw: Nominal diameter of needle roller
Dp: Nominal outer diameter of thrust washer
Dp1: Nominal inner diameter of thrust washer
S: Nominal thickness of thrust washer
Dz: Maximum installation connection dimension
Dz1: Minimum installation connection dimension
Published by National Bureau of Standards on August 1, 1984
Thrust ring
(AS 000000 type)
1985-05-01 implementation
GB4605—84
S: Thickness variation of thrust washer bottom surface relative to raceway. Example of marking:
Thrust needle roller and cage assembly
AS203501
Thrust washer
4 Dimensions and tolerances
GB4605—84
889104
GB 460584
The bearing specified in this standard consists of a thrust needle roller and cage assembly and a thrust washer. Their dimensions are in accordance with the specifications in Table 1. Table 1 Dimensions of thrust needle roller and cage assemblies and thrust washers Assembly and thrust washer Model
Thrust needle roller and
Cage assembly
889000
889016
889017
889018
889019
889100
889101
88 9102 | | tt | | 889103 | 112
889113
AS000000 type
AS 0619/08
AS 0720/08
AS0821/08
AS 0922'08
AS1024/08
AS1226/08
AS1528/08
AS1730/08
AS2035/08
AS2542/08
AS3047/08
-AS3552/08| |tt||AS4060/08
AS4565/08
AS5070/08
AS5578/08
AS6085/08
AS6590/08
AS061901
AS072001
AS082101
AS092201
AS102401
AS122601
AS152801
AS173001
AS203501
AS254201
AS304701
AS355201
AS406001
AS456501
AS507001
AS557801
AS608501
AS659001
* and b respectively indicate two specifications with different thicknesses. ** indicates reference size. | |tt | 889124
889126
889128
889130|| tt||889132
2 Deviation
Assembly and thrust washer model
Thrust washer drawing
AS000000 type
AS7095/08
AS75100/08
AS80105/08
AS85110/08
AS90120/08
AS100135/08
AS110145 /08
AS120155/08
AS130170/08
AS140180/08
AS150190/08
AS160200/08
GB4605-84
Continued Table 1
AS709501
AS7510001
AS8010501
AS85110 01
AS9012001
AS100135G1
AS11014501
AS12015501
AS13017001
AS14018001
AS15019001
AS16020001
The deviation of the inner and outer diameters of the components and thrust washers and the S of the thrust washers shall be in accordance with the provisions of Table 2 and Table 3 respectively. Table 2 Deviation of the inner diameter of the components and thrust washers and the SDa and D of the thrust washers
Upper deviation (ES)
*6 and b respectively represent two specifications of different thicknesses. It is a reference size.
Lower deviation (EI)
Upper deviation (ES)
***The deviations of De1 and D are E11 and E12 respectively; the calculation basis of the deviation value is shown in Appendix A.
**Refers to the thickness variation within the width of the raceway D, -Dzi. Lower deviation (EI)
S *+**
Not exceeding
Dea and Dpa
D and Dp
Upper deviation (ES)
4605-84
Continued Table 2
Lower deviation (EI)
Upper deviation (ES)
Outer diameter deviation of components and thrust washers
Upper deviation (es)
The deviation of the thrust washer thickness S is ±0.05mm. Model representation
Lower deviation (ei)
Lower deviation (EI)
Difference***
Upper deviation (es)
Not exceeding
Lower deviation (ei)
Thrust needle roller and cage assembly is represented by 889000***. Thrust washers are represented by letters and Arabic numerals. The letters AS on the left indicate thrust washers that meet the dimensions of this standard. The numbers on the right are the inner diameter, outer diameter and thickness in millimeters, starting from the left. When the inner diameter and outer diameter are greater than 99, they are represented by three digits. When the thickness is 0.8 mm, it is represented by /08. For example: AS1024/08
3 means Dpl=10mm, Dp=24mm, S=0.8mm; *The deviations of De1 and Dpl are E11 and E12 respectively; the calculation basis of the deviation value is shown in Appendix A. ** Refers to the thickness variation within the width of the raceway Dz-Dzi. ** The deviations of De and Dp are c12 and e13 respectively; the calculation basis of the deviation value of e13 is shown in Appendix A. **** According to the provisions of GB272-64 "Rolling Bearing
Code".
GB4605-84
AS102401
indicates Dpl=10mm, Dp=24mm, S=1mm, AS7510001 indicates Dpl=75mm, Dp=100mm, S=1mm; AS10013501
indicates Dpl=100mm, Dp=135mm, S=1mm When the combination can be used as a raceway, the 889000 type assembly can be used alone; it can also be used in combination with the AS000000 thrust washer, marked as (889000+AS000000).
Other technical requirements
Needle rollers" and the regulations on G2 grade precision needle rollers. The technical requirements of needle rollers shall comply with GB309-84 "Rolling bearing thrust washers are made of high-quality polished spring steel plates (strips) by precision stamping, and should be polished after heat treatment. The surface roughness 6.2
Ra<0.2μm; burrs and sharp edges are not allowed; the hardness should not be lower than HRC60. The cage is made of 08 or 10 cold-rolled low-carbon steel plates (strips). 6.3
The shaft deviation and housing hole deviation of the bearing shall be in accordance with the provisions of Table 4 and Table 5 respectively. Table 4 Limit deviation of shaft matched with bearing
Nominal diameter of housing hole
889000*
Upper deviation (es)
Lower deviation (ei)
Limit deviation of housing hole matched with bearing
889000**
Upper deviation (ES)
Lower deviation (EI)
*In order to guide the rotation of the cage,
The contact part between the shaft and the cage should be ground. **The surface of the housing hole is the guide surface and should be ground. Extreme
AS000000 for shaft drawing
Upper deviation ((es)
Lower deviation (ei)
AS000000 for seat ring
Upper deviation (ES)
Lower deviation (EI)
GB4605—84
6.5 The shoulder end face and the bottom surface of the housing hole for installing the 889000 component are actually the thrust washer raceway. Therefore, the shoulder end face must be perpendicular to the axis (the verticality extends to the full length of the needle as much as possible) and have sufficient rigidity; the center circle diameter of the bottom surface (raceway) of the housing hole should not exceed the center circle diameter of the needle by 0.5 (Dz+Dz). When installing the AS000000 thrust washer, ensure that the shoulder and the bottom surface of the housing hole are perpendicular to each other. The entire flat surface of the face contacts the bottom surface of the thrust washer; the roundness of the shaft and the housing hole should not exceed 50% of their corresponding diameter tolerance. 6.6 When the thrust washer is not used, the roughness of the flat surface of the shaft shoulder and the housing hole contacted by the needle roller shall be Ra<0.2μm; its hardness shall not be lower than HRC60; its axial runout and verticality shall not exceed 50% of the thrust washer S specified in Table 2. GB4605-84
Appendix A
Basis for calculation of tolerance value
(reference)
Calculation of basic deviation;
For tolerance e, the basic deviation is the upper deviation (es), calculated according to the formula -11Do.41; for tolerance E, the basic deviation is the lower deviation (EI), calculated according to the formula +11DO.4\ Calculation; Where: D - the geometric mean of the first and last two dimensions in each size segment, mm. A.2 Calculation of standard tolerance: Tolerance grade Where: i tolerance unit, μm; i = 0.45D + 0.001D Another deviation calculation: Additional notes: ei = es-IT; ES = EI + IT. This standard was proposed by the Ministry of Machinery Industry of the People's Republic of China and drafted by the Luoyang Bearing Research Institute of the Ministry of Machinery Industry. The main drafter of this standard is Zhang Hongqu. National Standard of the People's Republic of China Needle Roller Bearings Thrust Needle Roller and Thrust Needle Roller Bearings t||Cage assembly, thrust washer
GB4605—84
Published by China Standards Press
(Beijing Fuwai Sanlihe)
Printed by the printing workshop of China Standards Press
Published by Beijing Distribution Office of Xinhua Bookstore
Sold by Xinhua Bookstores in Guangdong
Format 880×12301/16
Printing sheet 3/4
Number of words 12,000
First edition in March 1985
First printing in March 1985
Print run 110.000
Book number: 15169·1-2881
Price 0.30 yuan
Heading 17—323
The shaft deviation and housing hole deviation of the bearing shall be in accordance with the provisions of Table 4 and Table 5 respectively. Table 4 Limit deviation of shaft matching with bearing
Nominal diameter of housing hole
889000*
Upper deviation (es)
Lower deviation (ei)
Limit deviation of housing hole matching with bearing
889000**
Upper deviation (ES)
Lower deviation (EI)
*In order to guide the rotation of the cage,
The contact part between the shaft and the cage should be ground. **The surface of the housing hole is the guide surface and should be ground. Extreme
AS000000 for shaft drawing
Upper deviation ((es)
Lower deviation (ei)
AS000000 for seat ring
Upper deviation (ES)
Lower deviation (EI)
GB4605—84
6.5 The shoulder end face and the bottom surface of the housing hole for installing the 889000 component are actually the thrust washer raceway. Therefore, the shoulder end face must be perpendicular to the axis (the verticality extends to the full length of the needle as much as possible) and have sufficient rigidity; the center circle diameter of the bottom surface (raceway) of the housing hole should not exceed the center circle diameter of the needle by 0.5 (Dz+Dz). When installing the AS000000 thrust washer, ensure that the shoulder and the bottom surface of the housing hole are perpendicular to each other. The entire flat surface of the face contacts the bottom surface of the thrust washer; the roundness of the shaft and the housing hole should not exceed 50% of their corresponding diameter tolerance. 6.6 When the thrust washer is not used, the roughness of the flat surface of the shaft shoulder and the housing hole contacted by the needle roller shall be Ra<0.2μm; its hardness shall not be lower than HRC60; its axial runout and verticality shall not exceed 50% of the thrust washer S specified in Table 2. GB4605-84
Appendix A
Basis for calculation of tolerance value
(reference)
Calculation of basic deviation;
For tolerance e, the basic deviation is the upper deviation (es), calculated according to the formula -11Do.41; for tolerance E, the basic deviation is the lower deviation (EI), calculated according to the formula +11DO.4\ Calculation; Where: D - the geometric mean of the first and last two dimensions in each size segment, mm. A.2 Calculation of standard tolerance: Tolerance grade Where: i tolerance unit, μm; i = 0.45D + 0.001D Another deviation calculation: Additional notes: ei = es-IT; ES = EI + IT. This standard was proposed by the Ministry of Machinery Industry of the People's Republic of China and drafted by the Luoyang Bearing Research Institute of the Ministry of Machinery Industry. The main drafter of this standard is Zhang Hongqu. National Standard of the People's Republic of China Needle Roller Bearings Thrust Needle Roller and Thrust Needle Roller Bearings t||Cage assembly, thrust washer
GB4605—84
Published by China Standards Press
(Beijing Fuwai Sanlihe)
Printed by the printing workshop of China Standards Press
Published by Beijing Distribution Office of Xinhua Bookstore
Sold by Xinhua Bookstores in Guangdong
Format 880×12301/16
Printing sheet 3/4
Number of words 12,000
First edition in March 1985
First printing in March 1985
Print run 110.000
Book number: 15169·1-2881
Price 0.30 yuan
Heading 17—323
The shaft deviation and housing hole deviation of the bearing shall be in accordance with the provisions of Table 4 and Table 5 respectively. Table 4 Limit deviation of shaft matching with bearing
Nominal diameter of housing hole
889000*
Upper deviation (es)
Lower deviation (ei)
Limit deviation of housing hole matching with bearing
889000**
Upper deviation (ES)
Lower deviation (EI)
*In order to guide the rotation of the cage,
The contact part between the shaft and the cage should be ground. **The surface of the housing hole is the guide surface and should be ground. Extreme
AS000000 for shaft drawing
Upper deviation ((es)
Lower deviation (ei)
AS000000 for seat ring
Upper deviation (ES)
Lower deviation (EI)
GB4605—84
6.5 The shoulder end face and the bottom surface of the housing hole for installing the 889000 component are actually the thrust washer raceway. Therefore, the shoulder end face must be perpendicular to the axis (the verticality extends to the full length of the needle as much as possible) and have sufficient rigidity; the center circle diameter of the bottom surface (raceway) of the housing hole should not exceed the center circle diameter of the needle by 0.5 (Dz+Dz). When installing the AS000000 thrust washer, ensure that the shoulder and the bottom surface of the housing hole are perpendicular to each other. The entire flat surface of the face contacts the bottom surface of the thrust washer; the roundness of the shaft and the housing hole should not exceed 50% of their corresponding diameter tolerance. 6.6 When the thrust washer is not used, the roughness of the flat surface of the shaft shoulder and the housing hole contacted by the needle roller shall be Ra<0.2μm; its hardness shall not be lower than HRC60; its axial runout and verticality shall not exceed 50% of the thrust washer S specified in Table 2. GB4605-84
Appendix A
Basis for calculation of tolerance value
(reference)
Calculation of basic deviation;
For tolerance e, the basic deviation is the upper deviation (es), calculated according to the formula -11Do.41; for tolerance E, the basic deviation is the lower deviation (EI), calculated according to the formula +11DO.4\ Calculation; Where: D - the geometric mean of the first and last two dimensions in each size segment, mm. A.2 Calculation of standard tolerance: Tolerance grade Where: i tolerance unit, μm; i = 0.45D + 0.001D Another deviation calculation: Additional notes: ei = es-IT; ES = EI + IT. This standard was proposed by the Ministry of Machinery Industry of the People's Republic of China and drafted by the Luoyang Bearing Research Institute of the Ministry of Machinery Industry. The main drafter of this standard is Zhang Hongqu. National Standard of the People's Republic of China Needle Roller Bearings Thrust Needle Roller and Thrust Needle Roller Bearings t||Cage assembly, thrust washer
GB4605—84
Published by China Standards Press
(Beijing Fuwai Sanlihe)
Printed by the printing workshop of China Standards Press
Published by Beijing Distribution Office of Xinhua Bookstore
Sold by Xinhua Bookstores in Guangdong
Format 880×12301/16
Printing sheet 3/4
Number of words 12,000
First edition in March 1985
First printing in March 1985
Print run 110.000
Book number: 15169·1-2881Www.bzxZ.net
Price 0.30 yuan
Heading 17—32
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