This standard specifies the flange dimensions of flanged outer rings for metric tapered roller bearings. Other dimensions of outer rings and complete bearings are specified in GB/T 297 "Rolling bearings - Tapered roller bearing dimensions". This standard applies to the outer rings of flanged tapered roller bearings. The flange dimensions of flanged outer ring bearings not included in this standard are specified in Appendix A (Appendix to the standard). GB/T 4648-1996 Rolling bearings - Tapered roller bearing flanged outer ring dimensions GB/T4648-1996 Standard download decompression password: www.bzxz.net

GB/T4648--1996
This standard is revised according to ISO355:1977/Add.2:1980 "Metric tapered roller bearings GB4648-84" and is equivalent to the international standard in terms of technical content.
Compared with GB4648--84, the main change in the bearing code of this standard is in accordance with GB/T272--93 "Rolling bearing code method".
From the date of entry into force, this standard will replace GB4648-84. Appendix A of this standard is the appendix of the standard.
This standard is proposed by the Ministry of Machinery Industry of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Standardization of Rolling Bearings. Drafting unit of this standard: Luoyang Bearing (Group) Company Drafters of this standard: Zhang Ling, Liu Xuejun. This standard was first issued in 1984.
GB/T4648-1996
ISOForeword
This international standard ISO 355 has been prepared by ISO/TC4 (Technical Committee for Rolling Bearings) The
edition of this international standard is IS0355:1977/Add.2:1980. 208
National Standard of the People's Republic of China
Rolling bearings
Tapered roller bearings-Flanged cups
Boundary dimensions
Rolling bearings-Metric tapered roller bearings-Flanged cups---Boundary dimensionsGB/T4648--1996
eqv ISO 355: 1977/Add. 2:1980 replaces GB4648-84
This standard specifies the flange dimensions of flanged outer rings for metric tapered roller bearings. Other dimensions of outer rings and complete bearing sets are specified in GB/R297 "Rolling bearings - Tapered roller bearing dimensions". This standard applies to the outer rings of flanged tapered roller bearings. For flanged outer ring bearings not included in this standard, the flange dimensions are specified in Appendix A (Appendix to the standard). 2 Referenced 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 in the following standards are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards GB/T297-94 "Rolling bearings - Tapered roller bearing dimensions" 3 Symbols (see Figure 1
D: Nominal outer diameter of bearing
D: Nominal outer diameter of flange
C:Nominal width of outer ring
C: Nominal width of flange
h;: Nominal height of flange
Approved by the State Bureau of Technical Supervision on December 18, 1996 and implemented on July 1, 1997
4 Flange size
GB/T4648—1996
The flange size of the outer ring of flanged tapered roller bearings is shown in Table 1. Table 1
Bearing outer code
L30203
L32203
L30302
L320/22
L32005
L30204
L30303
L32204
L32303
L320/28||tt| |L30205
L30304
L32205
L32304
L32006
L32007||t t||L30206
L30305
L31305
L32206
L33206
L32305|| tt||L332/32
L32008bzxZ.net
L30207
L30306
L31306
L3220 7
L33207
L32306
L32009
L33009
L33108
L32 010
133010
L30208
L31307
Overall dimensions/mm
Flange dimensions
Bearing outer ring code
133109
L33208
L30209
L32209
L33209
L 32011
L30210
E30308
L31308
L32210
L33210
L32308
L32012
L33012
L 33111
L33013
L30211
L30309
L31309
L32211
L33211| |tt||L32309
L30212
L30310
L31310
L33014
L33113
L3 3212
L32015
Outline size imm
Bearing outer ring code
L30311
L31311
L32213
L33114
L33213
L32016
L30214
L32214
L33115
L33 211
L32017
L30215
L30312
L31312
L32215
133116||t t||L-32312
L32018
L33018
L30216
L30313
L31313
L32 216
L33117
L33216
L32313
L32019
L33019
L32020||t t||L30217
L30314
L31314
L32217
L33118
L33217
GB/T 4648--- 1996
Table 1 (continued)
Overall dimensions/mml
Bearing outer ring code
L32314
130315
L31315
L32218
L33119
L33218
L32315
L33120
L32022||t t||L33022
L30219
L30316
L31316
L32219
L33219
L 32316
L33121
L33024
L30220
L30317
L31317
L32220
L33122
L33220
L32317
L30221
L31318
L32221||tt ||133221
L32318
L33026
L30222
L30319
L31319
L32 222
Dimensional size/mm
Bearing outer ring code
132319
132028
L33028
L30320
L32030
L30321
L31321
L32321
L30226
GB/T4648--- 1996
Table 1 (end)
Dimensions/mm
Bearing outer circle code
132226
L32032
L30322
L31322
L32322
L30228
L30324
L31324
L3 2324
L30230
L32036
Overall dimensions/mm
A1" range
GB/T4648-1996
Appendix A
(Standard Appendix)
Supplement to outer ring flange dimensions
The flange dimensions specified in this appendix apply to the flange outer ring of tapered roller bearings not specified in Table 1. A2 The width and height of the flange are shown in Table A1 and Table A2 respectively. Table A1 Flange width
Note: See Appendix A of GB/T29794 for the contact angle series. C
Table A2 Flange height
All dimensions
Contact angle series
GB/T4648.1996
Table A2 (End)
All dimensions
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