This standard specifies the structural type, code method, dimensions and technical requirements of cross-axis universal joint cylindrical roller bearings for steel rolling machinery, lifting and transportation machinery and other heavy machinery. This standard applies to universal joint cylindrical roller bearings. JB/T 3370-2002 Rolling bearings Universal joint cylindrical roller bearings JB/T3370-2002 standard download decompression password: www.bzxz.net

ICN21.100.20
Mechanical Industry Standard of the People's Republic of China
JB/T3370——2002
Replaces JB/T3370—1991
Rolling bearings-cylindrical roller bearings for universal Joints2002-07-16Published
Implementation on 2002-12-01
Published by the State Economic and Trade Commission of the People's Republic of ChinaForeword
Normative referencesFemale parts
3 Symbols.
4 Code method,
Prefix code
English code
Suffix code
4.4 Code example
S Overall dimensions
6 Installation requirements
6.! Material change heat treatment quality plate
6.2 Specification
6.3 Other technical requirements
Testing method and inspection plan
8 Mark
Appendix A (Normative Appendix) Comparison of old and new codes of universal joint cylindrical roller bearings. JB/T3370-2002
JB/T3370-2002
The revised version of the standard JB/T3370-1991 & Rolling bearing universal piece without inner ring return column rust on bearing dimensions and tolerances? Compared with B/T3370-1, the main changes are as follows: According to GB1.1-2000, the writing format is modified: the name is collected as rolling bearing universal joint return column magnetic sub bearing? ：Change the universal joint cylindrical roller bearing code (both the 1991 edition and this edition are 4 years old): Added "Technical requirements", "Testing methods and inspection rules", "Marking" and "Packaging" (see Article 6, Chapter 8 and Chapter 9 1:
Added the informative appendix "Universal joint cylindrical roller bearing new and old code comparison" see Appendix A): Appendix A of this standard is an informative appendix.
This standard is proposed by China Machinery Industry Federation. This standard is developed by the National Technical Committee for Standardization of Bearings (CSBTS/TC9B). The unit of this standard: Luoyang Bearing Group Co., Ltd. The main innovators of this standard: Zong Jianli, Zhao Zhiling The revised versions of the standards replaced by this standard are as follows: JB33701983.B/T33701991
1 Scope
Rolling bearings Universal joints Cylindrical roller bearings
JB/T 3370-2002
This standard specifies the structural type, numbering method, overall dimensions and requirements for cross-jointed universal joint roller bearings for heavy-duty conveyors and other types of machinery. This standard is used for square pitch rails (hereinafter referred to as shaft bearings). 2 Normative referenced documents
The following documents have become the series of this standard through the application of this standard. For any referenced document with a date indicated, all subsequent amendments (unlike the contents of the revision) or revised versions are not applicable to this standard. However, parties that have reached an agreement based on this standard are encouraged to use the original versions of these documents. For any referenced document without a date indicated, its latest version is applicable to this standard. GB/T 307.2—1995
GB/T 1801---1999
GR/T4661-:2002
GB/T 7811—1999
GB/T 8597—1988
M/T 122I
JB/T3574—1557
JB.T 7051—1993
JR/T 8921
3 Special
Principles and methods for measuring and inspecting rolling bearings (ney1SO/TR9274:1991) Selection of limits and matching tolerance zones (eIS01829:1975) Rolling bearings
Rolling bearing symbols
Deep dynamic bearing packaging (negJISB1517)
High combustion chromium steel dynamic bearing parts heat treatment technical conditions Rolling bearing product logo
Surface roughness measurement of dynamic bearing parts Li Li evaluation method for dynamic bearings and parts, inspection rules
GB/T7611-1999 The symbols given in E and the following symbols apply to this standard (see Figures 1 and 2) 5×45
w: Overall inner diameter of roller
A: The difference between the overall inner diameter of roller
JB/T3370-20Q2
T-axis width
H: The width from the inner side of the convex step to the inner bottom
H. : Bearing bottom thickness
M: Oil filling hole screw diameter
S: Inner boss width
4 Code method
Unique code consists of a prefix code, a basic code and a suffix code. 4.1 Prefix code
The code before ZW indicates a cylindrical bearing. 4.2 Base code
The code before "" indicates the total inner diameter of the roller according to the regular rounding of the numbers! The number after " represents the width of the bearing (rounded according to the numerical rule). 4.3 Post-code
The post-code RS indicates that the sealing form of the bearing is a rubber seal ring: when a steel groove seal is used, it is not indicated in the code. 4.4 Code example
5 Overall dimensions
Rubber ring
The bearing width is 47mm (after rounding)
The overall inner diameter of the bearing is 32mm (after rounding)
One-way section column bearing
The overall dimensions of the bearing are in accordance with the provisions of Table 1. For comparison of new and old bearing codes, see Appendix A6 Technical requirements
6.1 Material and heat treatment quality
When the shaft and bearing are made of 15 steel, their hardness and heat treatment quality are BT1255-2001 stipulates: When using other materials, the frequency and thermal properties shall be in accordance with the provisions of the product drawings. 6.2 Tolerance
See Table 1 for overall dimensions.
Unit: mam
Bearing model
232/47
Zw36/53
ZW4a/59
Zw46/65
ZW52T3
ZW--·RS type
ZW32/47RS
ZW36/53RS
Zao59Rs
ZW46/65RS
ZW52/73RS
ZW60/S:RS
Overall dimensions
ZW type ZW.--RS type
M10×1
Bearing model
2.w-ks type
ZW70/89
ZW76/96
ZW87/103
ZW100111
2W11(V113
2W127/127
ZW158/170
2W189/195
ZW70898.5
ZW76/96R5
ZW83/103RS
ZWBT/103RS
ZWJOIERS
ZW11Gr11 3RS
ZW127,127RS
ZW758/170RS
ZW:89195RS
The bearing size is small, and the overall inner diameter deviation of the roller shall be determined after the temporary bearing test according to the provisions of Table 2. 6.2.1
Overall inner diameter of the roller
Upper tolerance
Outer diameter deviation shall be in accordance with the provisions of Table 3.
Outer diameter
Upper tolerance
Lower tolerance
Table 1 (continued)
Overall dimensions
ZW type z..-RS villa
Users should also contact the bearing design department when necessary. Table 2
6.2.3 The width deviation from the inner side of the flange to the inner bottom shall be in accordance with the provisions of Table 4. 4
Other technical requirements
The lower run difference
The surface roughness value R. of the bearing mating surface and the outer bottom surface is 1.25um. 6.3.1
1 The tolerance of the shaft journal and the inner grid of the neutron body shall be in accordance with GB/T1RO16.3.2
The closing tolerance shall be in accordance with N6 in BT1801-1999. 80
JB/T3370-2002
M70×1
:MI0X1
Unit: +m
Unit: wm
Unit:
1999 h5, the housing hole and the bearing outer diameter 6.3.3 The technical requirements for cylindrical rollers shall comply with the provisions of Class III rollers in GB/T4661-2002. 6.3.4 The thickness of the amide pad installed at the bottom of the chain bearing ring shall be selected by the user according to the installation size of the auxiliary bearing and the length of the cross shaft when adjusting the shaft spacing.
6.3.5 The shaft shall rotate flexibly, and the seal and retaining ring shall not be loose or off the road. 3
JB/T3370-2002
6.3.6 The surface of the bearing shall not have cracks, edges and burrs, etc. 7 Measurement methods and inspection rules
7.1 The tolerance of the overall inner diameter of the roller shall be checked by a gauge or instrument. 7.2 The measurement of external tolerances shall be in accordance with the provisions of 0R/307.2-1995. 7.3 The measurement of the width tolerance from the inner side of the convex dial to the inner bottom shall be in accordance with the provisions of the manufacturer. 7.4 The roughness of the table shall be in accordance with the provisions of BT70511993. 7.5 The inspection and control regulations of bearings shall be in accordance with the provisions of JB8921.-1999. The sample shall be inspected according to the level I, the AQL value of the seven items is 1.5, the frequency is 4.0, and the detailed inspection items shall be in accordance with the provisions of Table 5. 5
B mark
Main inspection layer
The overall inner diameter deviation is produced
Outer diameter deviation D
|Side internal nitrogen explosion vegetables
Assembly example
The bearing shall be in accordance with the provisions of B/T3.574-1997, and the packaging
The installation of the bearing shall be in accordance with the provisions of GBT8597-1988: 1
Inspection items
Bearing specification category
Match table with low to high surface roughness
Appearance quality
Book filtration, packaging liquid
Appendix A
(Normative appendix)
Comparison of old and new codes of universal joint cylindrical roller bearings and new codes of universal joint cylindrical roller bearings are shown in Table 4.1. Table A.1 Comparison of old and new codes of universal joint cylindrical bearings
ZW32/17
ZW36453
zwdriris
zWS273
Zw60/B
ZW70/89
ZW76/96
ZW83:03
ZW87/L03
zW:0G/111
2W1 277:27
W158/170
ZW189/145
Deduction code
Type 604000
604906
G0490 7
804908
504909
834912
6r4914
604915
604916
60 4917
604920
604922
604925
604932
604938
Date number
2 W·RS type
ZW32/478S
ZW36/53RS
ZW4DV59RS
ZW4665RS
2W5273RS||t t||ZW6VSIRS
ZW7W80RS
Zw6/96ks
ZW83/103RS
ZAOERS
ZW10OI1 IRS
ZW110/113RS
ZW127/127RS
ZW158/170RS
ZW1S9/195RS
JB/T 3370—2002
604000R.S type
604906R5
604907R5
604908RS
604910RS
604912RS
6 0-4014R5
04U15RS
S4Y16RS
34917RS
G04920RS
604922RS
0-4925RS
604932R5
604938R5Type S
604906R5
604907R5
604908RS
604909RS
604910RS
604912RS
60-4014R5||tt ||04U15RS
S4Y16RSwwW.bzxz.Net
34917RS
G04920RS
604922RS
0-4925RS
604932R5
604938R5Type S
604906R5
604907R5
604908RS
604909RS
604910RS
604912RS
60-4014R5||tt ||04U15RS
S4Y16RS
34917RS
G04920RS
604922RS
0-4925RS
604932R5
604938R5
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