JB/T 9144-1999 JB/T 9144-1999 Technical requirements for rolling bearings for railway vehicles JB/T9144-1999 Standard download decompression password: www.bzxz.net

ICS 21.100. 20
Machinery Industry Standard of the People's Republic of China
JB/T 9144—1999
Technical Conditions of Rolling Bearing for Railway Wagon and Coach
Specifications of rolling bearing for railway wagon and coach1999-06-28Promulgated
State Bureau of Machinery Industry
Implementation on 2000-01-01
JB9144—1999
This standard is a revision of ZBJ11002—87 (Technical Conditions of Rolling Bearing for Railway Wagon and Coach). Compared with ZBJ11002, this standard specifies the bearing code, adds an appendix, and makes editorial changes to the original standard. This standard replaces ZF111002—87 from the date of implementation. The appendix to this standard Appendix A and Appendix B are both referenced. This standard was proposed and approved by the National Technical Requirements Committee for Standardization of Rolling Bearings. The drafting units of this standard are Luoyang Bearing Research Institute and Sifang Rolling Stock Research Institute of the Ministry of Railways. The main drafters of this standard are Dan Baojia, Fang Zhongquan and Meng Chanyan. This standard was first published in 1981 as JB1589. It was first revised in 1987. This is the second revision. Machinery Industry Standard of the People's Republic of China
Technical Conditions for Rolling Bearings of Railway Vehicles
Specials ■Scope
JB/T9[44—1999
代贵租311002
This standard specifies the dimensions, technical requirements, inspection methods and rules of rolling bearings for railway vehicle axles (hereinafter referred to as bearings).
This standard is applicable to production inspection by manufacturers and acceptance by users. 2 Referenced standards
The texts contained in the following standards constitute the provisions of the vehicle standard through reference in this standard. When this standard is published, the versions shown are valid. All standards are subject to revision. Parties using this standard should consider the feasibility of using the most recent versions of the following standards. GBT 307.1--1994
GB/T 307.2—1995
GB/T 307.3—1996
GB/T 3203—[982
JB/T1255—1991
353993
JB/T:8881-—1999
FB/T892]--[999
YE9——1968
3 Technical requirements
3.1 General technical requirements
Rolling bearings Radial bearing tolerances
Principles and methods of rolling bearing measurement and inspection General technology of rolling bearings Specifications
Technical conditions for carbon bearing steel
Technical conditions for hot-wire treatment of high-carbon chromium bearing steel rolling shaft core parts rolling bearing oil seal anti-rust packaging
Measurement and evaluation method for radial clearance of rolling bearings Quality standard for carbon hot-wire treatment of moving bearing parts Inspection specifications for micro-motion bearings and their rare goods Specifications for chromium bearing steel
3..1 Bearings supplied in accordance with this standard shall comply with the provisions of GB307.1, GB30T.3 and product samples approved by the competent department of the manufacturer.
3.1.2 The model, size and clearance value of the bearing are shown in Table 1, and the comparison of new and old models is shown in Appendix B (Tyr's Appendix). 3.J, 3 The matching surface of the bearing is not allowed to be chained. 3.1.4 The seal of the 350000-27 type auxiliary bearing must be intact and have good performance when sealed. 3.1.5 The inner ring should be subjected to expansion test.
3.1.6 The outer ring of 350000-22 bearing should be subjected to drop test. 3.1.7 The working surface and matching surface of the bearing ring and rolling element are not allowed to have scratches, scratches, H pits and rust. The working surface should not have burns, soft spots and demagnetization. Approved by the Machinery Industry Bureau on June 28, 1999, and implemented on January 1, 2000
TE9144-1999
The connection between the inner chamfer of the bearing and the inner surface should be smooth and not sharp. 3. 1.8
Bearing model
NJ 3224X1 F1/C9S0
NJ3224X3Mr950
NJP 3224X3 F1/C9S4)
NJT224X3MC930
NJ 3226XI F1/C9S0
MJ3226XIMC9n
N2X1Ft9S
NP226X:/9S
32220X322
352226222
21MX2-27
Overall dimensions←
Lightly trace
J.1.9The solid cage of N and MJP bearings is not allowed to have any depressions after pressing. a) The roller has a correction phenomenon in the retaining cage; b) There are few lines;
) It is loose;
) The rivet head is incomplete, peeled, misaligned, or has chisel marks. 3.2 Bearing materials and heat treatment
Shaft 3.2.1 For bearing parts made of chrome steel, ZG C11S and vacuum degassed GCr15 bearing steels conforming to the YB9 standard shall be selected according to the different parts of use.
3.2.2 For bearing parts made of carbon steel G20CIN2M04, the raw material and carburizing allowable weight shall conform to the provisions of GB/T8881.
3.2.3 For bearings made of cast bearing steel, the rings with S0 shall be tempered at 200℃, and the rollers shall be tempered at [B0], and the surface hardness shall be tempered to the provisions of B1255: The shaftless equiaxial bearing rings made of carbon steel shall be tempered at 170℃, and the surface hardness shall reach 60~4HRC, and the core hardness shall reach 35-451RC. 3.2, 4 To eliminate cutting stress and stabilize the size, the bearing sleeves with the supplementary code SV made of stainless steel bearings should be re-ground at 180°C after rough grinding; the bearing sleeves made of solid carbon steel should be re-ground at 15°C. 3.3 Bearing component structure
3.3.1 The manufacturer should obtain the consent of the subscriber when changing to a new type of cage. 3.3.2 The roller bearings should be rounded or concave. 3.3.3 To ensure that the axle and the axle box are relatively movable when the bearing is pulled out, the inner ring of the VJP type bearing should protrude 0.4~0.7mm from the outer reference surface.
JB/T9144—1999
After the arpeggio cage for 350000-27 bearings is pressed, the bearings should be able to rotate flexibly, and the lateral play should not exceed the requirements in Table 2. Table 2
Minimum nominal internal stroke of cage
Subtle lateral play
3.4 ​​Interchangeability
3.4.1 For NJ and NJP bearings, the separable rings of one type shall be fully interchangeable. >2K--400
3.4.2 In order to utilize the axles after being drawn and ground, the subscribers shall centrally order bearings with inner diameters 0.5 mm or less than the standard from the bearing manufacturers. The models are shown in Table 3. The inner diameters of the bearings listed in the table are the same as the standard inner diameters of the bearings and other dimensional tolerances and technical requirements.
Drawing bearing nominal inner weight reduced weight
N 3224X3F1SU
NJ 3224X3 M/C9S01
NJP 3224X3F1/C9S0-1
NUT 3224X3 M/C9501
3226XEFL/C9S0-
NI 3226X I Mi(9SI-!
NJP3226X1F1C9C-
NJP 3226XIM/C9S0-1
35220X3-27-1
352226X2271
332230x2.22
3.5350000-22 type shaft strategy lubrication and desaturation 3.5.The types and specifications of 1350000-22 type Cancheng fat-removing products must comply with the regulations of the order. NJ 3224X3 F1/C9S0-2
NJ 3224X3 MUC9502
4JP 3224X3 F1/C9S0-7
NJP 3224X3 M/C9S02
NJ1226XIF1/C98-2
NI 3226X1 M/C9S-2
NP3226X1FL/CDS0-2
NIP 3226X1 MC950-2
352220X3-27-2
3222x2
352230X2222
3,5.2350000-2Z The remaining grease of the bearing is in accordance with the provisions of Table 4. The outer periphery of the middle ring accounts for about 1.2 of the total grease, and each row of rollers accounts for about 1.4 of the total grease. The amount of grease between the sealing lip is about 5g. The grease should be evenly applied. Table 4
332220X3-22
35222GX2-22
35223(1X2-22
250 -300
70D-750
JB/T9144-1999
3.5.3 Cleanliness of auxiliary bearings" "Regulations on the drawings of products approved by the competent authorities. 4 Inspection methods and inspection rules
4.13.3.3 The inner ring non-reference end face protrusion of NJ type and NJP type bearings specified in the method shown in Figure 1 and Figure 2 shall be measured. Place the bearing on a flat surface so that the outer side of the bearing is in a hollow state, and measure the outer and inner bottom points of the same value at equal intervals on the circumference of the sleeve surface.
Figure 1 Schematic diagram of NJ type bearing measurement
2NJP type auxiliary bearing strength and width
.2350000-22 bearing self-test axial clearance measurement disk force method is shown in Figure 3. Figure 3 Schematic diagram of axial clearance measurement disk of 350000-22 bearing 4.3 The net and the sub-lead must be carried out according to the provisions of Appendix B in JB/1255-199, and 100% magnetic operation inspection 4.4 The expansion test method of the inner figure is shown in Appendix A (according to the appendix of benzene) 4.5 Drop test
4.5.1 The sampling number and judgment number of the drop test shall be specified in Table 5. Bearing batch most
>24-1511
JB/T9144-19 99
Sampling sensitivity
Number of qualified judgment
Number of unqualified judgmentRe
4.5.2 The drop test is to make the bearing sleeve fall freely from a high seat with a vertical distance of 1.2m and hit the low embedded steel plate with the size of 380mm×380mx13mm (K×width×thickness). 4.5.3 The test piece shall not be broken, deformed or deformed after the drop test, and the force test shall be carried out without any crack. 4.6 For the inspection of auxiliary bearings, in addition to the tests specified in this standard, the other tests shall comply with GB/T307.2, JB/357 and JB8921.
s Packaging
3500002Z type bearings must be packaged and supplied as a complete set (including sleeves, bearings, sealing devices and grease). Other requirements and the provisions of B3034 for NJ and NJP bearing packaging, JB/T9144-1999
Appendix A
(Suggestive Appendix)
Bearing internal expansion test method
A1 The sampling number and judgment number of the expansion test shall be as specified in Table A1. A1
Acceptance limit
>25--1.50
Sampling result
Qualified judgment number Ac
Unqualified judgment number Shop
A Use an eccentric press to quickly squeeze a chain centroid shaft through the bearing. The diameter of the large end of the centroid is c+.0015 (the inner diameter of the inner displacement). The expansion test requires the adoption of necessary safety protection measures. After the expansion test, magnetic flaw detection shall be carried out to show any cracks: o
New bearing [H model comparison see Table B],
New model
N 3224X3 FIC9S0
NI.22·1X3 M/C9S
V'P224X1 FI49S0
NJP 34X1 M/C4S
.NJ 3226X1 F1/C9S0
MJ 1226X1 M:C950
NJP 322AXI FIC9SG
NJP 3276X1 M/C:9S6
352222X322
352226X2-2
352230K2- 27 | | tt | 3226XIM/C9S0-]
.TA/T9144—1999
Appendix B
(Prompt attachment request)
Comparison of old and new bearing models
E model
42724ruw
42724TUT
152724IuUW.
[52724IU
42726I1W
42726TUH||tt ||152726.TUW,
197720
197720
42724KTT:W
42724KTUH
152724KTIJW
152724K1L
42726KTUW
42726KTUH
New type
NIP3226XFL/C9S0-1
NJP 3226XI M.T9S01 | | tt | | 35225X2221 | X$ M.C9S02 | M/C9S02
353330X3-72-2
352226X22Z2
3.5223x2272
下#
L$2726KT6JW
152726 KTU1)
147720K
ly7 72h k
197730K
42724 K.TUW
12724 K.TUH
1$2774 K,111W
152724 K,IUIH
42726ETUW
42726K,JU1
152726 K,T'JW
152726 K,IH
197720K
[97730K,3 The inner ring non-reference end face projection of NJ and NJP bearings specified in the regulations shall be measured according to the method shown in Figures 1 and 2. Place the bearing on a flat surface so that the outer side of the bearing is in a hollow state, and measure the outer and inner bottom points of the bearing at equal intervals on the circumference of the bearing sleeve. The measurement method of the axial clearance of the 350000-22 bearing in the natural state is shown in Figure 3. Figure 3 Schematic diagram of the axial clearance measurement of the 350000-22 bearing 4.3 The mesh and the sub-assembly shall be subjected to 100% magnetic inspection according to the provisions of Appendix B of JB/1255-199 4.4 The expansion test method of the inner surface is shown in Appendix A (according to the appendix of benzene) 4.5 Drop test 4.5.1 The sampling number and judgment number of the drop test shall be as specified in Table 5. Bearing batch minimum
>24-1511
JB/T9144—1999
Sampling sensitivity
Qualified number
Unqualified number Re
4.5.2 The drop test is to let the bearing sleeve fall freely from a high seat with a vertical distance of 1.2m and hit it on a low embedded steel plate with a size of 380mm×380mx13mm (K×width×thickness). 4.5.3 After the drop test, there shall be no breakage, deformation and force resistance test on the test piece, and there shall be no crack. 4.6 For the inspection of auxiliary bearings, in addition to the tests specified in this standard, the other tests shall comply with GB/T307.2, JB/357 and JB8921.
s Packaging
3500002Z type bearings must be packaged and supplied as a complete set (including sleeves, bearings, sealing devices and grease). Other requirements and the provisions of B3034 for NJ and NJP bearing packaging, JB/T9144-1999
Appendix A
(Suggestive Appendix)
Bearing internal expansion test method
A1 The sampling number and judgment number of the expansion test shall be as specified in Table A1. A1
Acceptance limit
>25--1.50
Sampling result
Qualified judgment number Ac
Unqualified judgment number Shop
A Use an eccentric press to quickly squeeze a chain centroid shaft through the bearing. The diameter of the large end of the centroid is c+.0015 (the inner diameter of the inner displacement). The expansion test requires the adoption of necessary safety protection measures. After the expansion test, magnetic flaw detection shall be carried out to show any cracks: o
New bearing [H model comparison see Table B],
New model
N 3224X3 FIC9S0
NI.22·1X3 M/C9S
V'P224X1 FI49S0
NJP 34X1 M/C4S
.NJ 3226X1 F1/C9S0
MJ 1226X1 M:C950
NJP 322AXI FIC9SG
NJP 3276X1 M/C:9S6
35222X322
352226X2-2
352230K2- 27 | | tt | 3226XIM/C9S0-]
.TA/T9144—1999
Appendix B
(Prompt attachment request)
Comparison of old and new bearing models
E model
42724ruw
42724TUT
152724IuUW.
[52724IU
42726I1W
42726TUH||tt ||152726.TUW,
197720
197720
42724KTT:W
42724KTUH
152724KTIJW
152724K1L
42726KTUW
42726KTUH
New type
NIP3226XFL/C9S0-1
NJP 3226XI M.T9S01 | X$ M.C9S02 | M/C9S02
353330X3-72-2
352226X22Z2
3.5223x2272
下#
L$2726KT6JW
152726 KTU1)
147720K
ly7 72h k
197730K
42724 K.TUW
12724 K.TUH
1$2774 K,111W
152724 K,IUIH
42726ETUW
42726K,JU1
152726 K,T'JW
152726 K,IH
197720K
[97730K,3 The inner ring non-reference end face projection of NJ and NJP bearings specified in the regulations shall be measured according to the method shown in Figures 1 and 2. Place the bearing on a flat surface so that the outer side of the bearing is in a hollow state, and measure the outer and inner bottom points of the bearing at equal intervals on the circumference of the bearing sleeve. The measurement method of the axial clearance of the 350000-22 bearing in the natural state is shown in Figure 3. Figure 3 Schematic diagram of the axial clearance measurement of the 350000-22 bearing 4.3 The mesh and the sub-assembly shall be subjected to 100% magnetic inspection according to the provisions of Appendix B of JB/1255-199 4.4 The expansion test method of the inner surface is shown in Appendix A (according to the appendix of benzene) 4.5 Drop test 4.5.1 The sampling number and judgment number of the drop test shall be as specified in Table 5. Bearing batch minimum
>24-1511
JB/T9144—1999
Sampling sensitivity
Qualified number
Unqualified number Re
4.5.2 The drop test is to let the bearing sleeve fall freely from a high seat with a vertical distance of 1.2m and hit it on a low embedded steel plate with a size of 380mm×380mx13mm (K×width×thickness). 4.5.3 After the drop test, there shall be no breakage, deformation and force resistance test on the test piece, and there shall be no crack. 4.6 For the inspection of auxiliary bearings, in addition to the tests specified in this standard, the other tests shall comply with GB/T307.2, JB/357 and JB8921.
s Packaging
3500002Z type bearings must be packaged and supplied as a complete set (including sleeves, bearings, sealing devices and grease). Other requirements and the provisions of B3034 for NJ and NJP bearing packaging, JB/T9144-1999
Appendix A
(Suggestive Appendix)
Bearing internal expansion test method
A1 The sampling number and judgment number of the expansion test shall be as specified in Table A1. A1
Acceptance limit
>25--1.50
Sampling result
Qualified judgment number Ac
Unqualified judgment number Shop
A Use an eccentric press to quickly squeeze a chain centroid shaft through the bearing. The diameter of the large end of the centroid is c+.0015 (the inner diameter of the inner displacement). The expansion test requires the adoption of necessary safety protection measures. After the expansion test, magnetic flaw detection shall be carried out to show any cracks: o
New bearing [H model comparison see Table B],
New model
N 3224X3 FIC9S0
NI.22·1X3 M/C9S
V'P224X1 FI49S0
NJP 34X1 M/C4S
.NJ 3226X1 F1/C9S0
MJ 1226X1 M:C950
NJP 322AXI FIC9SG
NJP 3276X1 M/C:9S6
352222X322
352226X2-2
352230K2- 27 | | tt | 3226XIM/C9S0-]
.TA/T9144—1999
Appendix B
(Prompt attachment request)
Comparison of old and new bearing models
E model
42724ruw
42724TUT
152724IuUW.
[52724IU
42726I1W
42726TUH||tt ||152726.TUW,
197720
197720
42724KTT:W
42724KTUH
152724KTIJW
152724K1L
42726KTUW
42726KTUH
New type
NIP3226XFL/C9S0-1
NJP 3226XI M.T9S01 | X$ M.C9S02 | M/C9S02
353330X3-72-2
352226X22Z2
3.5223x2272
下#
L$2726KT6JW
152726 KTU1)
147720K
ly7 72h k
197730K
42724 K.TUW
12724 K.TUH
1$2774 K,111W
152724 K,IUIH
42726ETUW
42726K,JU1
152726 K,T'JW
152726 K,IH
197720K
[97730K,22·1X3 M/C9S
V'P224X1 FI49S0
NJP 34X1 M/C4S
.NJ 3226X1 F1/C9S0
MJ 1226X1 M:C950||tt| |NJP 322AXI FIC9SG
NJP 3276X1 M/C:9S6
35222X322
352226X2-2
352230K2-27
N1 1224X3 F1/C90. | |tt||NJ3724X3M/950-
NJP 3224X3 FIC9S6 1
NT 3224X3 M/C9S0-1
NJ 3226X1 F1/C9 S0-1
N 3226XIM/C9S0-]
.TA/T9144—1999|| tt||Appendix B
(Notes)
Comparison of old and new bearing models
E model
42724ruw
42724TUT
152724IuUW.
[52724IU
42726I1W
42726TUH||tt ||152726.TUW,
197720
197720
42724KTT:W
42724KTUH
152724KTIJW
152724K1L
42726KTUW
42726KTUH
New dynamic
NIP3226XFL/C9S0-1
NJP 3226XI M.T9S01 | | tt | | 35225X2221 | |tt||N:P 3224X$ M.C9S02
N2 3226X1 F1/C9S2-2
NJ 322GX 1 M/C9S02
NJP 3226X1 F1/CSI-2||tt ||NJP 3226X1 M/C9S02
353330X3-72-2
352226X22Z2
3.5223x2272
下#
L$2726KT6JW
152726 KTU1)
147720K
ly772h k
197730K
42724 K.TUW
12724 K.TUH
1$2774 K,111W||tt ||152724 K,IUIH
42726ETUW
42726K,JU1
152726 K,T'JW
152726 K,IH
197720K
[97730K ,22·1X3 M/C9S
V'P224X1 FI49S0
NJP 34X1 M/C4S
.NJ 3226X1 F1/C9S0
MJ 1226X1 M:C950||tt| |NJP 322AXI FIC9SG
NJP 3276X1 M/C:9S6
35222X322
352226X2-2
352230K2-27
N1 1224X3 F1/C90. | |tt||NJ3724X3M/950-
NJP 3224X3 FIC9S6 1
NT 3224X3 M/C9S0-1
NJ 3226X1 F1/C9 S0-1
N 3226XIM/C9S0-]
.TA/T9144—1999|| tt||Appendix B
(Notes)
Comparison of old and new bearing models
E model
42724ruw
42724TUT
152724IuUW.
[52724IU
42726I1W
42726TUH||tt ||152726.TUW,
197720
197720
42724KTT:W
42724KTUH
152724KTIJW
152724K1L
42726KTUW
42726KTUH
New dynamic
NIP3226XFL/C9S0-1bZxz.net
NJP 3226XI M.T9S01 | | tt | | 35225X2221 | |tt||N:P 3224X$ M.C9S02
N2 3226X1 F1/C9S2-2
NJ 322GX 1 M/C9S02
NJP 3226X1 F1/CSI-2||tt ||NJP 3226X1 M/C9S02
353330X3-72-2
352226X22Z2
3.5223x2272
下#
L$2726KT6JW
152726 KTU1)
147720K
ly772h k
197730K
42724 K.TUW
12724 K.TUH
1$2774 K,111W||tt ||152724 K,IUIH
42726ETUW
42726K,JU1
152726 K,T'JW
152726 K,IH
197720K
[97730K ,
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