JB/T 7919.1-1999 JB/T 7919.1-1999 Rolling bearing accessories - withdrawal bushings JB/T7919.1-1999 Standard download decompression password: www.bzxz.net

ICS21.100.20
Mechanical Industry Standard of the People's Republic of China
JB/T7919.1--1999
neqISO2982-1:1995
Rolling bearings
Withdrawal bushing
Rolling bearings-Accessories-Withdrawal sleeves1999-06-28 Issued
National Machinery Industry Bureau
2000-01-01 Implementation
JB/T7919.1—1999
Cited StandardsbZxz.net
3 Terms
4 Symbols
5 Code Method
Technical Requirements
Measurement Method
Inspection Rules
Appendix A (Standard Appendix) Measurement Method
JB/T7919.1—1999
This standard adopts ISO2982-1:1995 "Tapered Sleeves for Rolling Bearing Accessories" in a non-equivalent manner. The standard supplements the technical conditions that are not included in the international standards.
This standard is a revision of JB/T7919.1--95 "Outline Dimensions of Rolling Bearing Accessories Withdrawal Sleeves" and JB/T7919.7-95 "Technical Conditions for Tapered Sleeves, Locking Nuts and Locking Washers for Rolling Bearing Accessories". Compared with JB/T7919.1-95 and JB/T7919.7-95, this standard has made the following revisions: The dimensions of JB/T7919.1 are merged with the technical conditions of the relevant contents of JB/T7919.7; the size range of the withdrawal bushings AH30, AH31, and AH32 series with a dimension of 1:12 is expanded, and the AH39 series and the AH240 and AH241 series with a taper of 1:3 are added:
The thread size of some models of withdrawal bushings has changed, and their codes have also changed accordingly: - The tolerances of the expanded size segments have been supplemented. This standard replaces JB/T7919.1-95 and JB/T7919.7-95 (part) from the date of implementation. Appendix A of this standard is the appendix of the standard.
This standard is proposed and managed by the National Technical Committee for Standardization of Rolling Bearings. The drafting unit of this standard: Luoyang Bearing Research Institute. The main drafters of this standard: Li Feixue, Chen Yuan, Guo Baoxia. 1 Scope
Machinery Industry Standard of the People's Republic of China
Rolling bearings
Withdrawal sleeves
Rolling bearings-Accessories-Withdrawal sleeves This standard specifies the dimensions and technical conditions of withdrawal sleeves. JB/T 7919.11999
neqIsO29821:1995
Replaces JB/T7919.1——95
Partially replaces JB/T7919.7—95
This standard applies to the design, production, inspection and user acceptance of withdrawal bushings for rolling bearings whose dimension series conform to GB/T273.3. 2 Reference standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T 192—1981
GB/T 196—1981
GB/T 272—1993
GB/T 273.3-1988
GB/T 2741991
GB/T 307.2-199 5
GB/T 699—1988
GB/T 1804—-1992
GB/T 2516--1981
GB/T 5796.1—1986
GB/T 5796.3—1986
GB/T 5796.41986
GB/T 69301986
GB/T 8597-1988
JB/T 3574—1997
JB/T 89211999
3 Terminology
Basic thread profile of common thread
: Basic dimensions (diameter 1~600mm)
Common thread
Code method for rolling bearings
Overall dimensions of rolling bearings Radial bearings Overall scheme of rolling bearing assembly chamfer limits
Match of rolling bearings with shafts and housings
Principles and methods of measurement and inspection of rolling bearings Technical conditions for high-quality carbon structural steel
General specifications
Unindicated tolerances for linear dimensions
Ordinary thread
Trapezoidal thread
Trapezoidal thread
Deviation table (diameter 1~355mm)
Basic dimensions
Trapezoidal thread
Rolling bearings
Rolling bearings
Rolling bearings
Product marking
Inspection rules for rolling bearings and their commodity parts The terms used in this standard conform to the provisions of GB/T6930. 4 Symbols
Symbols are shown in Figure 1.
Approved by the State Machinery Industry Bureau on June 28, 1999, and implemented on January 1, 2000
Pin ratio 1:12 or 1:30
d: Nominal inner diameter of the bearing
d,: Nominal inner diameter of the withdrawal sleeve
D,: Nominal diameter of the tapered large end of the withdrawal sleeveD,: Nominal diameter of the bottom of the withdrawal sleeve overrun grooveG: Thread
B,: Nominal width of the withdrawal sleeve
B: Total width of the withdrawal sleeve and the bearing ring
a: The sum of the thread length and the overrun groove width
b: Thread length
: Withdrawal sleeve groove width
F: Nominal chamfer size
D. : The middle diameter of the tapered surface of the withdrawal sleeve JB/T7919.1—1999
Ad. The average inner diameter deviation of the withdrawal sleeve in a single plane AB,: The deviation of the width of the withdrawal sleeve
Aa,: The length deviation of the withdrawal sleeve a
4f: The deviation of the groove width of the withdrawal sleeve
AD: The deviation of the large end diameter of the single cone of the withdrawal sleeve△Dimp-Adzmm: The cone angle deviation of the dimensional surface of the withdrawal sleeve K: The radial runout of the tapered surface of the withdrawal sleeve to the inner hole Voep: The variation of the single radial plane of the withdrawal sleeve D. Valne: The average inner diameter variation of the withdrawal sleeve
Code method
JB/T 7919.1—1999
The withdrawal sleeve code consists of the type code, the size series code and the inner diameter code, and is arranged in this order. 5.1 Type code
Type code is represented by the letter AH.
Note: AH followed by a letter or number indicates the different structures of the withdrawal bushing. Code for withdrawal bushing with taper 1:12
AH2—Code for withdrawal bushing with taper 1:30AHX—Code for withdrawal bushing with taper 1:12 and thread size different from the original one5.2 Dimension series code
Dimension series code is in accordance with the provisions of bearing dimension series code in GB/T272. Withdrawal bushings are divided into 39, 02, 30, 03, 22, 31, 32, 23, 40, 41 dimension series.
5.3 Inner diameter code
Inner diameter code is in accordance with the provisions of bearing inner diameter code in GB/T272. 5.4 Example
Applicable bearing inner diameter code
Dimension series code
Withdrawal sleeve code (taper 1:12)
Applicable bearing inner diameter code
Dimension series code
Indicates that the size of the thread is different from that of the original withdrawal sleeve code (taper 1:12)
Applicable bearing inner diameter code
Dimension series code
Withdrawal sleeve code (Taper 1:30)
Marking example: The withdrawal sleeve with a taper of 1:12 for a bearing with an inner diameter of 120 mm and a size series of 30 is: AH3024JB/T7919.1—-1999
The withdrawal sleeve with a taper of 1:30 for a bearing with an inner diameter of 100 mm and a size series of 40 is: AH24020JB/T7919.1—1999
7Size
JB/T7919.1-1999
The dimensions of the withdrawal set shall comply with the provisions of Tables 1 to 10. Table 1 AH39 series
AH3934
AH3936
AH3938
AH3940
AH3944
AH3948
AH3952
AH3956
AH3960
AH3964
AH3968
AH3972
AH3976
AH3980
AH3984
AH3988
AH3992
AH 3996 | | tt |
AH39/850
AH39/900
AH39/950
AH39/1000
AH39/1060
M180×3
M 190×3
M200×3
Tr210x4
Tr 250× 4
Tr 280×4
Tr300×4
Tr 340×5
Tr3 60×5
Tr 380×5
Tr 400×5
Tr420×5
Tr 440×5
Tr 460×5
Tr500×5
Tr530×6
Tr 560 ×6
Tr 600×6
Tr630×6
Tr670×6
Tr 710×7
Tr750×7
Tr 800×7
Tr850×7
Tr 900×7
Tr950×8
000×8
Tr 1060×8
Tr1120 ×8
frequency master model
HML 92
HML 96
HML/500
HML/530
HML/560
HML/600
HML/630
HML/670
HML/710
HML/750
HML/800
HML/850 ||t t||HML/900
HML/950
HML/1000
HML/1060
HML/1120
Applicable bearings
Spherical roller bearings
23934K
23936K
23938K
23940 K
23944K
23948K
23952K
23956K
23960K
23964K
23968K
23976 K
23980K
23984K
23988K
23992K
23996K
239/500K
239/530K
239/600K
239/630K
239/670K
239/710 K
239/750K
239/800K
239/900K
239/950K
239/1000K
239/1060K
AHX 213
AHX 2 14
AHX 215
AHX 238
AHX240
AHX 244
AHX248
AHX252
AHX 256
M 50 × 1.5
×2
M 60 ×2
M65 ×2
M 70 ×2
M 75 ×2
M 80 ×2
M90×2
M95×2
M 105×2
M110×2|| tt||M 120×2
M130×2
M140×2
M 150×2
M 160×3
M 170×3
M180×3
200×3
Tr210x4
Tr230x4
Tr260×4
Tr280×4
Tr 300 × 4
JB/T 7919.11999
Table 2AH2 series
Reference scale
Applicable bearings
Xie Xin ball bearings
AH3024
AH3026
AH3028
AH3030
AH3032
AH3034
AH3036
AHX3038
AHX 3040
AHX3044
AH3048
AH3052
AH3056
AH3060
AHX3064
AHX 3068 | | tt | t||AH30/560
AH30/600
AH30/630
AH30/670
AH30/710
AH30/750
AH30 /800
AH30/850
AH30/900
AH30/950
AH30/1000
AH30/1060
M130×2
M140×2
M150×2
M160×3||t t||M170×3
M180×3
M190×3
M200×3
Tr210×4
Tr 230 × 4
Tr 260 × 4
Tr280×4
Tr300×4
Tr320×5
Tr340 ×5
Tr 380 ×5
Tr400×5
Tr 420×5
Tr440×5
Tr460×5
Tr480×5
Tr500×5
Tr 530×6
Tr 560 × 6
Tr 630×6
Tr 670×6
Tr710×7
Tr 750×7
Tr800×7
Tr900×7
Tr950×8
Tr1060×8
Tr 1 120×8
JB/T 7919.1-1999 | | tt | HML/750
HML/800
HML/850
HML/900||tt ||HML/950
HML/1000
HML/1060
HML/1120
Applicable bearings
Xie Xin roller bearings
23024K
23026K
23028K
23030K
23032K
23034K
23036K
23038K
23040K| |tt||23044K
23048K
23052K
23056K
23064K
23064K
23068K
23076K
23080K||t t||23084K
23088K
23092K
23096K
230/500K| | tt | 50K
230/900K
230/950K
230/1000K
230/1060K
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.