contact us

Try to get a Free Sample

No. 61, BinHe Road, LuoLong Zone, LuoYang City, P.R. of China

+86 (0379) 639 68877

operating hours

8:00 — 18:00

Consulting method

info@qibr.com

products

Tapered roller bearing

Customizable


  • Standards:GOST/ASTM/GB
  • Inner diameter (ID):15mm-2000mm
  • Outer diameter (OD):30mm-2500mm
  • Weight:0.097kg-4000kg
  • Structures:outer ring, inner ring, rollers and cage.
  • Applications:automotive, rolling mill, mining, metallurgy, plastic machinery, machine tool spindles, roll support industries.

LEARN MORE
  • QIBR Model Selection
  • QIBR Customized Bearing
  • QIBR Process Control
  • QIBR Sort and Grade
Bearing Models
New Code Old Code Dimension, mm( d*D*B)
32004X 2007104E 20*42*15
32005X 2007105E 25*47*15
32006X 2007106E 30*55*17
32007X 2007107E 35*62*18
32008X 2007108E 40*68*19
32009X 2007109E 45*75*20
32010X 2007110E 50*80*20
32011X 2007111E 55*90*23
32012X 2007112E 60*95*23
32013X 2007113E 65*100*23
32014X 2007114E 70*110*25
32015X 2007115E 75*115*25
32016X 2007116E 80*125*29
32017X 2007117E 85*130*29
32018X 2007118E 90*140*32
32019X 2007119E 95*145*32
32020X 2007120E 100*150*32
32021X 2007121E 105*160*35
32022X 2007122E 110*170*38
32024X 2007124E 120*180*38
32026X 2007126E 130*200*45
32028X 2007128E 140*210*45
32030X 2007130E 150*225*48
32032X 2007132E 160*240*51
32034X 2007134E 170*260*57
32036X 2007136E 180*280*64
32038X 2007138E 190*290*64
32040X 2007140E 200*310*70
32044X 2007144E 220*340*76
32048 2007148E  
32048X2A   240*360*76
32048X2AT171/DBCR275   240*360*171
  2007148S 240*360*76
  2007148SY  
32056X 2007156 280*420*87
32060X 2007160 300*460*100
32064X 2007164 320*480*100
  2007152 260*400*87
32912 2007912 60*85*17
32913 2007913 65*90*17
32914 2007914 70*100*19
32915 2007915 75*105*20
32916 2007916 80*110*20
32917 2007917 85*120*23
32918 2007918 90*125*23
32919 2007919 95*130*23
32920 2007920 100*140*25
32926 2007926 130*180*32
32928 2007928 140*190*32
32930 2007930 150*210*38
32932 2007932 160*220*38
32934 2007934 170*230*38
32936 2007936 180*250*45
32938 2007938 190*260*45
32940 2007940 200*280*51
32944 2007944 220*300*51.5
32948 2007948 240*320*51.5
32948X2A    
  2007948KT2  
32952 2007952 260*360*64.5
32952X2A   260*360*63.5
32956 2007956 280*380*64.5
32960 2007960 300*420*74.5
32964 2007964 320*440*76
32964X2A   320*440*76
32964X2AT195/DBCK375   320*440*195
32968 2007968 340*460*76
32972 2007972 360*480*76
32972 2007972E 360*480*76
30203 7203E 17*40*12
30203/YB2   17*40*12
30204 7204E 20*47*14
30205 7205E 25*52*15
30206 7206E 30*62*16
30207 7207E 35*72*17
30208 7208E 40*80*18
30209 7209E 45*85*21
30210 7210E 50*90*22
30211 7211E 55*100*23
30212 7212E 60*110*24
30213 7213E 65*120*25
30214 7214E 70*125*26
30215 7215E 75*130*27
30216 7216E 80*140*28
30217 7217E 85*150*31
30218 7218E 90*160*33
30219 7219E 95*170*35
30220 7220E 100*180*37
30221 7221E 105*190*39
30222 7222E 110*200*41
30224 7224E 120*215*44
30226 7226E 130*230*44
30228 7228E 140*250*46
30230 7230E 150*270*50
30232 7232E 160*290*52
30234   170*310*57
30236 7236E 180*320*57
30238 7238E 190*340*60
30240 7240E 200*360*64
30244 7244E 220*400*72
30244/S0 7244ET 220*400*73
32204 7504E 20*47*19
32205 7505E 25*52*19
32205/YB2   25*52*19
32206 7506E 30*62*21
32207 7507E 35*72*24
32208 7508E 40*80*25
32209 7509E 45*85*25
32210 7510E 50*90*25
32211 7511E 55*100*27
32212 7512E 60*110*30
32213 7513E 65*120*33
32214 7514E 70*125*33
32215 7515E 75*130*33
32216 7516E 80*140*35
32217 7517E 85*150*39
32218 7518E 90*160*43
32219 7519E 95*170*46
32220 7520E 100*180*49
32221 7521E 105*190*53
32222 7522E 110*200*56
32224 7524E 120*215*62
32226 7526E 130*230*68
32228 7528E 140*250*72
32230 7530E 150*270*78
32232 7532E 160*290*84
32234   170*310*91
32236 7536E 180*320*91
32238 7538E 190*340*97
32240 7540E 200*360*104
32244 7544E 220*400*114
32244/S0 7544ET  
32248 7548 240*440*127
31303 27303E 17*47*15.5
31304 27304E 20*52*16.5
31305 27305E 25*62*18.5
31306 27306E 30*72*21
31307 27307E 35*80*23
31308 27308E 40*90*25.5
31309 27309E 45*100*27.5
31310 27310E 50*110*29.5
31311 27311E 55*120*32
31312 27312E 60*130*34
31313 27313E 65*140*36.5
31314 27314E 70*150*38.5
31315 27315E 75*160*40
31315/S0 27315ET 75*160*40
31316 27316E 80*170*42.5
31316/S0 27316ET 80*170*42.5
31317 27317E 85*180*45
31318 27318E 90*190*47
31326 27326E 130*280*72
31328 27328E 140*300*77
  187328 140*300*154
31330   150*320*82
31332 27332E 160*340*87
30303 7303E 17*47*15
30304 7304E 20*52*16
30305 7305E 25*62*18
30306 7306E 30*72*21
30307 7307E 35*80*23
30308 7308E 40*90*25
30309 7309E 45*100*27
30310 7310E 50*110*29
30311 7311E 55*120*32
30312 7312E 60*130*34
30313 7313E 65*140*36
30314 7314E 70*150*38
30315 7315E 75*160*40
30316 7316E 80*170*43
30317 7317E 85*180*45
30318 7318E 90*190*47
30319 7319E 95*200*50
30320 7320E 100*215*52
30321 7321E 105*225*54
30322 7322E 110*240*55
30324 7324E 120*260*60
30326 7326E 130*280*63.75
30328 7328E 140*300*67.75
30330 7330E 150*320*72
30332 7332E 160*340*75
30352 7352 260*540*113
32304 7604E 20*52*22
32305 7605E 25*62*25
32306 7606E 30*72*29
32307 7607E 35*80*33
32308 7608E 40*90*35
32309 7609E 45*100*38
32310 7610E 50*110*42
R32310   50*110*42
32311 7611E 55*120*46
32311/YB2   55*120*46
R32311   55*120*46
32312 7612E 60*130*49
32313 7613E 65*140*51
32314 7614E 70*150*54
32315 7615E 75*160*58
32316 7616E 80*170*62
32317 7617E 85*180*64
32318 7618E 90*190*68
32319 7619E 95*200*72
32320 7620E 100*215*78
32321 7621E 105*225*82
32322 7622E 110*240*85
32324 7624E 120*260*91
32326 7626E 130*280*99.5
32328   140*300*107.75
32330 7630E 150*320*114
32332 7632E 160*340*121
32334 7634E 170*360*128
350210 97210E 50*90*49
350222 97222E 110*200*92
350620D1 37720 100*190*125
350620 97720 100*182*112
  97720KT 99.5*182*112
  7721 105*215*78
350626 97726 130*230*150
  97726K 129.5*230*150
350626D1 37726 130*235*145
350630/S0 97730T 150*270*109
350632X2D1 37732 160*270*140
  197735ZC 175*305*333
350636 97736 180*340*180
350636D1 37736 180*285*108
352208 97508E 40*80*55
352210 97510E 50*90*55
352212 97512E 60*120*75
352214 97514E 70*125*75
352216 97516E 80*140*80
352217 97517E 85*150*85
352218 97518E 90*160*95
352220 97520E 100*180*112
352221 97521E 105*190*118
352222 97522E 110*200*125
352224 97524E 120*211*132
352226 97526E 130*230*150
352228 97528E 140*250*158
352230 97530E 150*270*170
352236 97536 180*320*189
  97536K 180*320*192
  97536KT  
352240 97540E 200*360*218
  7813E 65*110*30
  7815E 75*135*45
  7815EK 75*135*45
  7816E 80*140*45
  7909 47*100*43
  277909E 45*100*32
  2097722 110*180*95
F-127509    
F-786116 33213  
F-786117   90*147*40
30616 7716E 80*130*32
30618 7718 90*160*49.5
30623 7723 115*190*48.5
30628 7728E 140*230*57.5
30628R 67728 140*230*58
30636 7736 180*290*64.5
31038X2 7138 190*290*51
31080X2 7180 400*600*95
31084X2 7184 420*620*94.5
33114 3007714 70*120*37
33114X2R 67714 70*120*45
33115 3007715 75*125*37
33116 3007716  
33117 3007717 85*140*41
33118 3007718 90*150*45
33118X2   90*150*38.5
33118/HA    
33122 3007722 110*180*56
351068 97168 340*520*180
351072 97172 360*540*185
351076 97176 380*560*190
351080 97180 400*600*206
351084 97184 420*620*206
351084X2D1   420*620*190
351088 97188 440*650*212
351092 97192 460*680*230
351160 1097760 300*500*205
  97764 320*480*151
351168 1097768 340*580*242
351172 1097772 360*600*170
351176 1097776 380*620*242
351180 1097780 400*650*255
351184 1097784 420*700*275
  77788 440*650*355
  77788/21  
351976 1097976 380*520*145
351992 1097990 460*620*174
351990/HC    
351996 1097996 480*650*180
  E879/500 501*711*250
  E879/635 635*939*304
3519/500/HC 10979/500 500*670*180
3519/500/HCYA5    
3519/500    
3519/530 10979/530 30*170*190
3519/560 10979/560 560*750*213
3519/600   600*800*205
3519/630 10979/630 630*850*242
  779/600 600*800*365
3519/710 10979/710 710*950*240
3519/750 10979/750 750*1000*264
3519/750X2/HC   750*100*255
3519/800 10979/800 800*1060*270
3519/850 10979/850 850*1120*268
3519/900 10979/900 900*1180*275
3519/950 10979/950 950*1250*300
3519/1120 10979/1120 1120*1460*335
319/530X2 10079/530 530*710*88
3510/500 971/500 500*720*236
3510/560 971/560 560*820*260
3510/600 971/600 600*870*270
310/900 71/900 900*1280*190
352048X2   240*360*164
352052 2097152 260*400*185
  2097152NB  
352056 2097156 280*420*185
352060 2097160 300*460*210
352064 2097164 320*480*210
352124 2097724 120*200*110
352126 2097726 130*210*110
352128 2097728 140*225*115
352130 2097730 150*250*138
352132 2097732 160*270*150
352132X2/HA   160*270*140
352132X2/HAC9    
  3G2097732Y 160*270*150
352134 2097734 170*280*150
352134/HAC3   170*280*150
352136 2097736 180*300*164
352138 2097738 190*320*170
352140 2097740 200*340*184
352144 2097744 220*370*195
352148 2097748 240*400*210
352148X2/01    
352152 2097752 260*440*225
352944 2097944 170*280*150
352948 2097948 240*320*116
352948X2-1/YA1W   240*320*109
  2097948K 240*320*110
352948X2-2 2097948K1 240*320*109
352948X2-1   240*320*109
352948X2   240*320*104
352952X2   260*360*133
352952 2097952 260*360*134
352952X2-1   260*360*133
352952/01    
352956 2097956 280*380*134
352956X2    
352960 2097960  
352960X2    
352964 2097964 320*440*160
352968 2097968 340*460*160
352972 2097972 360*480*160
370652D   260*420*170
370660-RZ/HCC9   300*560*170
370660-RZ/HCC9    
370660/HC   300*560*170
370660/HCC9    
3706/635   635*939.8*304.8
371080X2   400*600*190
380648/HCC9   240*338*248
380652/HC   260*400*255
380652/HC-1   260*400*255
380652/HCC3    
380660 77760  
380679/HC   390*545*288.9
380679/HCYA3   395*525*288.7
380679X2/HC 77779 395*545*288.7
380680-XRS/HCC9   400*540*400
380680/HC   400*540*400
380684/HC   420*560*437
380684/HCC9    
380684-XRS/HCC9   420*560*437
380688/HCC9YA8   440*20*454
380698/HC   490*625*385
3806/600/HCYA8   600*800*365
3806/660X4/HC   660.011*855.015*319.99
3806/685.8-XRS/HCC9   685.8*8763*355.6
3806/780/HCC9   780*1220*840
T2GB500   500*720*110
381036X2 77736 180*280*180
381040X2 77740 200*310*200
  37741 205*320*150
  77741 205*320*205
  37745 225*360*146.5
  37746 230*355*145
  77750K 250*460*270
  77752 260*400*255
  4G77752G  
  777752 260*440*300
  37752 260*430*179
  47752 260*420*170
  77756 280*420*250
381068 77168 340*520*325
381072 77172 360*540*325
381080/HC 77180 400*600*356
381084   420*620*356
381088X2/HC 77188 440*650*355
381096/HC 77196 480*700*420
3810/530 771/530 530*780*450
3810/600/HC 771/600 600*870*480
3810/630/HC 771/630 630*920*515
  7817 85*157*47.65
  7818 90*170*62
  7818EK  
  7819E 95*160*47
  97820 100*180*83
  97826U 130*214*115.6
  7828 140*300*90
  97830 150*225*112
  7832 160*375*87.3
  97833U 165*290*150
  87834 170*230*65
  37852 260*400*150
  77860U 300*420*310
  97860 300*500*200
  77872 360*480*375
  97872 360*540*169
  7880 400*500*60
  77880 400*540*280
  77888 440*620*454
  77888U 440*620*454
  77892U 460*650*474
  878/530 530*730*250
318/530X3   530*670*100
  78/760 760*890*78
318/850X2   850*1030*90
  7951 254*422.275*86.1
  87961K 305*500*200
  87961K1  
381130 77730 150*225*136
381156 1077756 280*460*324
  77756T2 280*420*250
  77760U 300*500*350
381168 1077768 340*580*425
381172 1077772 360*600*420
  7776 380*550*350
381176/HC 1077776 380*620*420
381176/HCYA2    
381176/HCYA2-1    
  3077776 380*620*388
381184 1077784 420*700*480
381192X3/HCC9 1077792 460*730*440
3811/560 10777/560 560*920*620
  877/570 570*750*240
3811/600 10777/600 600*980*650
3811/630/HC 10777/630 630*1030*670
  777/650 650*1030*560
  777/650U  
  777/650K  
  777/650UY  
3811/750 10777/750 750*1220*840
  77779U 395*545*288.7
  77779K  
  1077784K  
3819/560/HC 10779/560 560*750*368
3819/560/HCC3 E10779/560  
3819/600/HC 10779/600 600*800*380
3519/630 10979/630 630*850*242
3819/630/HC 10779/630 630*850*418
3819/670 10779/670 670*900*412
3819/710 779/710 710*900*410
381992 1077992 460*620*310
381992/C9 1077992U  
381992X3/YA   460*610*360
  2077148 240*360*310
  2077148U  
319/710   710*950*114
382052 2077152 260*400*345
382060 2077160 300*460*390
382064 2077164 320*480*390
382952/HC 2077952 260*360*265
  3G2097952K 260*360*134
382968X2/HC 2077968 340*460*310
382968X2/HCC9    
382968X2/HCC3   340*460*310
382972/HC 2077972  
   
   
358    
359A    
359X    
  354  
  354A  
387A    
  382A  
390    
  394A  
418    
  414  
462    
  453X  
580    
581    
  572  
  572B  
K594    
597    
598    
598A    
599X    
  K592A  
  592B  
  593X  
663    
  653  
780    
782    
787    
  772  
  772B  
2559    
  2523  
  2523B  
2788    
2790    
  2720  
  2729  
3379    
3386    
  3320  
3780    
3782    
  3720  
  3720B  
3982    
3984    
  3920  
F-0687    
  F-0671  
LM11749    
  LM11710  
LM11949    
LM11949E/S0    
  LM11910  
  LM11910/S0  
LM12749    
  LM12710  
14124    
14125A    
14131    
14137A    
14138A    
  14274  
  14276  
15123    
  15243  
  15245  
24780    
  24720  
  24721  
25580    
  25520  
25877    
25878    
  25820  
  25821  
26881    
26882    
26883    
26884    
  26820  
  26822  
  26822A  
  26823  
  26824  
LM29748    
LM29749    
F-57410    
  LM29710  
  LM29711  
L44643    
L44649    
  L44610  
L45449    
L45449E/S0    
F-0676    
  L45410  
  L45410/S0  
F-0687    
  F-0671  
48286    
  48220  
  48220B  
LM48548    
LM48548A    
  LM48510  
  LM48511A  
56425    
56425E    
  56650  
  56650B  
LM67048    
LM67049    
LM67049A    
  LM67010  
L68149    
  L68110  
  L68111  
M84249    
  M84210  
M86649    
  M86610  
HM89446    
  HM89410  
LM102949    
  LM102910  
LM104947A    
LM104948    
JLM104748-N    
LM104949    
  JLM104910  
  JLM104910-N  
  LM104911  
M201047    
  M201011  
  M201011R  
HM212047    
HM212049    
  HM212010  
  HM212011  
  HM212011R  
HM218248    
  HM218210  
HM220149    
F-502285    
  HM220110  
LM501349    
  LM501310  
  LM501311  
  LM501314  
HM518445    
  HM518410  
544091    
  544118  
LM603049    
  LM603011  
K52400/K52618   101.6*157.162*36.512
K82581TD/K82590   147.638*241.3*132.35
67390/67322   133.4*196.9*46
67790/67720   177.8*247.7*47.6
67883CL4/67820CL4   184.2*266.7*47.6
K67885/K67820   190.5*266.7*47.625
K67885DW/K67820   190.5*266.7*90.488
K74550/K74851CD   139.7*215.9*106.362
93825/93125   209.6*317.5*63.5
95500/95925   127*234.9*63.5
99550/99100   139.7*254*66.7
EE390095/390200   241.3*508*117.5
EE923095/923175   241.3*444.5*101.6
H414235/H414210   63.5*136.5*41.3
KH414249/KH414210   71.436*136.525*41.275
HH221449/HH221410   101*190.5*57.2
HH224335/HH224310   101.6*212.7*66.7
HH234048/HH234010   152.4*307.9*88.9
HH926749/HH926710   120.7*273.1*82.6
KHM237545/KHM237510   177.8*288.925*63.5
HM237542/HM237510   174.1*288.9*63.5
KHM237542/KHM237510   177.8*288.9*63.5
HM252348/HM252310   260.4*422.3*86.1
HM259048/HM259010   317.5*447.675*85.725
HM518445/HM518410   88.9*152.8*39.7
JHM522649/JHM522610   110*180*47
JHM840449/JHM840410   200*300*65
JL286948H/JL286910   928*1060*92
JL286949H/JL286910   930*1060*92
JM734449/JM734410   170*240*46
JM736149/JM736110   180*250*47
K47687/K47620   82.55*133.35*33.338
K48282/K48220   120.65*182.55*39.689
K48290/K48220   127*182.562*39.688
K48290DW/K48220   127*182.562*76.2
K49585/K49522   50.8*101.6*31.75
K67790/K67720    
K90381/K90744   96.838*188.912*50.8
KHH923649/KHH923610   101.6*250.825*76.2
KH917840/KH917810   76.2*180.975*53.975
K93825/K93125   209.6*317.5*63.5
K95500/K95925   127*234.9*63.5
K95525/K95925   133.4*234.9*63.9
K99600/K99100   152.4*254*66.675
KEE107060/K107105   152.4*268.3*74.6
KEE275105/KEE275155   266.7*393.7*73.8
KEE275108/K275155   273.1*393.7*73.8
KH242649/KH242610   206.4*336.6*98.4
KH913840/KH913810   60*146.05*41.275
KHH437549/KHH437510   165.1*336.6*92.1
KHM212044/KHM212011   60.325*122.238*38.354
KHM231132/KHM231110   139.7*236.5*57.15
KHM237542/KHM237510   174.1*288.9*63.5
KHM926740/KHM926710   114.3*228.6*53.9
KHM926747/KHM926710   127*228.6*53.975
KJHM522649/KJHM522610   110*180*47
KJHM534149/KJHM534110   170*230*38.5
KJM719149/KJM719113   95*150*35
KJM720249/KJM720210   110*155*36
KJM734449/KJM734410   170*240*46
KJM822049/KJM822010   110*165*35
KL357049/KL357010   304.8*393.7*50.8
KL521949/KL521910   107.95*146.05*21.433
KLM241149NWSH/KLM241110DSH   203.2*276.225*95.25
KLM245848/KLM245810/DF   231.775*317.5*95.25
KLM249747NWSH/KLM249710D   254*347.662*101.6
KLM565946/KLM565910   377.725*523.288*85.725
KLM565949/KLM565910   381*522.88*85.725
KM231649/KM231610   152.4*222.25*46.83
KM238849/KM238810   187.325*269.875*55.562
KM246949/KM246910   237.33*336.55
KM249747/KM249710   257.2*358.8*71.4
KM348449/KM348410   247.7*346.1*63.5
L183448/L183410   760*889*88.9
L183449/L183410   760*889*88.9
L357049/L357010   304.8*393.7*50.8
L45449/L45410   29*50.3*14.2
L68149/L68110   35*59.1*15.9*22.7
L848849SH/L848810SH   254*324.975*41.5
LM451349/LM451310   266.7*355.6*57.2
LM757049/LM757010   304.8*406.4*63.5
M236849/M236870   177.8*260.4*53.9
M249743SH/M249710SH   257.175*358.775*76.2
M255449/M255410   288.9*406.4*77.8
M349547SH/M349547SH   255.6*342.9*63.5
M349549/M349510   257.2*342.9*57.2
K896/892D   136.5*228.6*98.4
879/635   635*939.8*304.8
E879/635   635*939.8*304.8
8576DW/8520   234.9*327*93.7
8578/8520DC   241.3*327*114.3
K48680D/K48620   139.7*200.025*77.778
48685/48620D   142.9*200*87.3
74550/74581CDT3   139.7*215.9*106.4
82550/82932DU   139.7*236.5*131.8
82562/82932D   142.9*236.5*131.8
93787/93127D   200*317.5*146
93800/93127D   203.2*317.5*146.1
K95500/K95927D   127*234.9*142.9
K98400/K98789D   101.6*200.025*115.888
KNA46790SW/K46720D   165.1*225.4*95.25
KNA56425SW/K56650D   107.95*165.1*63.5
KNA67885SW/K67820D   190.5*266.7*109.5
NA48685/48620D   142.9*200*93.7
332171   510.1*800*285
BT2B334084/HA4   304.8*546.1*376
EE134102/134144D   260.35*365.125*130.175
EE181453/182351D   368.3*596.9*203.2
EE517060D/517117   152.4*298.45*107.95
EE822101D/822175   254*444.5*133.35
HM124646/HM124618XD   119.062*195.262*142.875
HM129848/HM129814XD   144.45*220.663*163.627
HM256849D/HM256810   300.038*422.275*150.812
HM259049D/HM259010    
HM262749TD/HM262710   346*488.9*174.6
HM262749TD/HM262710-3    
HM266449TD/HM266410   384.175*546.1*193.675
JM8220491-90N01   110*165*80
KH913849/KH913810/DB   69.85*146.05*91.516
KHM237545/KHM237510D   177.8*288.925*142.875
KHM926747/KHM926710D   127*228.6*115.888
KHM926749/KHM926710D   127.792*228.6*115.888
KJHM534149/KJHM534110/DB   170*230*87
KLM241149NW/KLM241110D   203.2*276.225*95.25
KLM249747NW/KLM249710D   254*347.662*101.6
KLM249747NWSH/KLM249710D   254*347.662*101.6
KLM251649NW/KLM251610D   266.7*352.425*107.950
KM255449TD/KM255410   288.925*406.4*144.462
L357049/L357010D   304.8*393.7*107.95
L357049NW/L357010D   304.8*393.7*107.95
LM772748/LM772710CD   488.95*634.773*180.925
LM869448/LM869410CD   431.8*571.5*155.575
M238840/M238810D   177.9*269.9*119
M238849/M238810DC   187.325*269.875*119.062
M2523490D/M252310   269.875*381*136.525
M255449TD/M255410   288.9*406.4*144.5
M255449TD/M255410-3    
M268749/M268710DC   415.925*590.5*244.475
M268749D/M268710-3   415.925*590.55*209.55
M268749DW/M268710   415.9*590.6*209.5
M272749/M272710D   479*679.5*276.2
BT2B328928/HA3   445*600*160
EE127049D/127135-127136D   241.4*349.1*228.6
EE127097D/127135-127136D    
EE135111D/135115-135156D   279.4*393.7*269.875
EE231475D/231975-231976D   374.7*501.7*260.4
HM266449DW/HM266410-HM266410CD   384.2*546.1*400
K1-LM761649DW/LM761610-LM761610D   343*457*254
K3M249748DW/K3M249710-K3M249710D-3   254*358.8*269.9
KEE127097D-127135-127136D    
KEE135111DW/K135155-K135156D   279.4*393.7*269.9
KM238849D/KM238810-KM238810D   187.3*269.9*211.1
LM239530T-LM239546TD-LM239549T/LM239512D   191.8*195.3*161.9
LM247748DW/LM247710-LM247710D   244.5*327*193.7
LM263149D/LM263110-LM263110D   355.6*457.2*252.412
LM451349DW/LM451310-LM451310D   266.7*355.6*228.6
LM761648D/LM761610-LM761610D   341.3*457.1*254
LM761648DW/LM761610-LM761610    
LM761649DW/LM761610-LM761610D-3    
LM769349D/LM769310-LM769310D   431.8*571.5*336.6
M238849D/M238810-M238810D   187.3*269.9*211.1
M249748D/M249710-M249710D   254*358.9*269.9
M249748DW/M249710-M249710D   254*258.9*269.9
M252349DW/M252310-M252310D   269.9*381*282.6
M255449/M255410-M255410D   288.9*406.4*298.5
M255449DW/M255410-M255410D   288.9*406.4*298.5
M257248DW/M257210-M257210D   304.9*412.6*266.7
M257248DW/M257210-M257210D-3    
M274149DW/M274110-M274110D   501.7*711.2*520.7
KHH932145/KHH932110   146.05*304.8*88.9

Tapered roller bearings are one of the most widely used rolling bearings. Most of QIBR tapered roller bearings are separate bearings, which are very convenient to install and disassemble. The roller of the tapered roller bearing is in conical linear contact with the raceway. The inner ring, the outer ring, and the rollers are all tapered, and their tapered raceway extension lines intersect a point on the axis of the bearing. Tapered roller bearings are mainly subjected to radial loads, one-way axial loads, and radial axial combined loads. The bearing capacity of the tapered roller bearing is determined by the angle of the outer ring raceway, generally, the greater the contact angle a is, the greater the axial load carrying capacity is.

Tapered roller bearings are consists of outer ring, inner ring, rollers and cage. The outer ring is separable structure, rollers, cage and inner ring build up the inner assembly. Therefore the bearing is easily to be installed on the bearing journal and bearing housing. According to the number of rows of the rollers, basically the tapered roller bearings are divided into single row tapered roller bearing, double row tapered roller bearing and four row tapered roller bearing.

The outer dimensions of QIBR tapered roller bearings conform to GB/T273.1 "Genera plan for the outer dimensions of rolling bearing tapered roller bearing", GB/T283 "Dimensions of rolling bearing tapered roller bearings", GB/T299 "Dimensions of rolling bearing double row tapered roller bearings", GB/T300 "Dimensions of rolling bearing four row tapered roller bearings" and other regulations.

The tolerance of QIBR standard tapered roller bearings meets the requirements of GB/T307.1 "Tolerance of rolling bearing radial bearing" and other standards.

The clearance of QIBR standard single row tapered roller bearing is adjusted by the position of the outer ring and the inner assembly in the axial direction during installation, and the other position of the reverse axial positioning bearing. To adjust the clearance, the bearing must be rotated repeatedly to ensure that the rollers and the inner ring guide rib are in good contact position. Excessive clearance will weaken the carrying capacity of the bearing, while too small clearance will result in excessive friction and increased operating temperatures. Through observing the low bearing operating temperature, low vibration and high rotation accuracy, we can judge an optimal clearance value. The clearance of the double and four-row roller bearings has been adjusted by us before leaving the factory, and the customer can install and use them directly.

The dimensional tolerance grade of QIBR tapered roller bearings is generally made according to P0 (normal grade) and clearance according to group 0 (basic group). If customers have other special requirements (including non-standard) for size, tolerance and clearance, QIBR are able to provide the corresponding product.

Single row tapered roller bearings code 3, double row tapered roller bearings code 35, four row tapered roller bearings code 38.

QIBR non-standard customized tapered roller bearing

Non-standard tapered roller bearing customization is a main part of QIBR categories. It can be customized according to the customer's working conditions or the place where the bearing works. Internally we can optimize and improve the design of the tapered roller bearing, the design of the rollers and rings raceway are made into a hyperbolic convexity, which can reduce the edge stress concentration and improve the contact area of the bearing, thereby improve the loading capacity and service life of bearing. The outer ring can also be designed as a tapered roller bearing with a snap groove. The sealing structure tapered roller bearings are available in QIBR, also with long life, multiple seals double or four row tapered roller bearings, which compared with open type bearings, the service life are 20%-40% improved and lubricant consumption is reduced by 80%. QIBR newly design the personalize bearings, which can change the traditional design method of the fully sealed bearing, it adopts a new sealed structure type combining sealing and dustproof, improves the sealing effect and sealing performance. Our QIBR enables non-standard tapered roller bearings to operate safely and smoothly with precision roller selection and bearing raceway production, to achieve optimum bearing performance.

Raw material

QIBR precision anti-friction bearings are usually made of chrome steel, which consist of about 1% carbon, 1.5% chromium and a small amount of manganese, silicon, and sometimes a small amount of molybdenum.

QIBR offers you a wide range of material options such as GCr15, 100Cr6, SKF 3, SUJ-2 etc. At the same time, some models of QIBR are available in stainless steel.

The rolling element can be ceramic ball (silicon nitride). Due to ceramic is kind of special material, the ceramic ball bearing has advantages of higher rotation speed, good self-lubricating property, and the rigidity is 15%-20% higher than the general bearing, and better high temperature resistance.

Bearing cage

The high-quality cage used by QIBR bearings ensure that the rollers and balls are evenly distributed in the bearing rings and can be rotated properly.

The cage is divided into stamped cage, brass solid cage, reinforced nylon 66 etc. Bearing cages that operate under high temperature or harsh conditions are recommended to use steel cages or brass solid cages, four-row cylindrical roller bearing is recommended to use brass solid cages. QIBR offers a wide range of advice and options depending on the operating conditions.

Type of lubrication

Lubricating oil is the basic lubricant for ball bearings. Previously most of the lubricating oil was extracted from petroleum. Synthetic oils are now acceptable due to improved performance, such as two lipid synthetic oils, silicones and fluorocarbon synthetic oils. In general, lipid synthetic oils have better low temperature properties, lower volatility, and better temperature characteristics and viscosity compared than petroleum refined oils. Essentially all lubricants contain additives to inhibit chemical changes, prevent metal corrosion, and improve physical properties (antifoam, etc.).

The silicone and fluorocarbon synthetic oils that adopted by QIBR have lower volatility and wider temperature/viscosity characteristics.

Radial clearance

The radial clearance is the gap between the steel ball and the ring. QIBR are able to tailor to you based on temperature conditions, interference fit, and misalignment of the bearing axis, required noise level and speed.

Service life and the rated load

The bearing life is the number of bearing rotations before the fatigue occurs on the ring or any rolling element (or the rotation time at a constant speed). However, the same set of bearings will not necessarily have the same life under the same conditions. In this case, the rated life is the number of rotations that 90% of the bearings in this group can reach or exceed before bearing weariness (or the rotation time at a constant speed). The service life of QIBR series bearings are 5%-10% longer than other bearings of the same model, through strict production process, high standard material selection, precision control.


Conversion table of bearing ball material
Bearing steel ball material comparison table
GB (China) Gcr15 GCr15SiMn
ASTM/AISI (USA) 52100 *
ГОСТ(Russia) ШX15 ШX15CГ
BS (UK) 534A99 *
JIS (Japan) SUJ2 SUJ3
NF (France) 100C6 100CrMn6
VDEh (Germany) 100Cr6 (1.3505) 1.352
Grade of rollers G1, G1A, G2, G2A, G3, G5

Standard of bearing precision level

Standard
Precision level
GOST Class 0 Class 6 Class 5 Class 4 Class 2
ISO P0 P6 P5 P4 P2

The classification of tapered roller bearings

Tapered roller bearings have ribs on both sides of the inner ring and no ribs on the outer ring, so the classification of tapered roller bearings is generally classified according to the number of rows of rollers. According to the number of rows of rollers, it can be divided into single row, double row and four row tapered roller bearings etc.

Single row tapered roller bearing

Back-to-back double row tapered roller bearing

Face-to-face double row tapered roller bearing

Four row tapered roller bearing

Single row tapered roller bearing

Single row tapered roller bearing can only withstand axial loads in one direction, it can limit the axial displacement of the shaft in one direction to the bearing housing. Generally, the cone angle of the outer ring raceway of a single row tapered roller bearing is between 10°~20°, which can simultaneously bear the combined effect of axial load and radial load. The larger the cone angle, the greater the ability to withstand axial loads. The bearing with large cone angle, code with B, its cone angle between 25 °~ 30 °, can withstand larger axial loads. In addition, the clearance of single row tapered roller bearings can be adjusted during installation.

Double row tapered roller bearing

The outer ring (or inner ring) of the double row tapered roller bearing is a unitary body. The small end faces of two inner rings (or outer rings) are close, and the spacers in the middle can withstand radial loads and at the same time withstand axial loads in both directions. The clearance of the double-row tapered roller has been adjusted before leaving the factory, and the customer can install it directly. The clearance is adjusted by the thickness of the spacer. Back-to-back double-row tapered roller bearings are superior to face-to-face double-row tapered roller bearings that the intersection of the pressure line and the axis of the back-to-back bearing are on the outside of the bearing, the distance between the pressure points is increased, the rigidity is large, can withstand overturning moment.

Four row tapered roller bearing

The performance of four row type bearing is basically the same as that of double-row tapered roller bearings, but it bear larger radial load than that of double-row tapered roller bearings, and the limit speed is slightly lower, mainly used for heavy machinery, for example bearings in the roll support.

Tapered roller bearing with a snap groove on outer ring

Sealing structure double row tapered roller bearings

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