Metric series Four-row tapered roller bearingsMetric series Four-row tapered roller bearingsMetric series Four-row tapered roller bearingsMetric series Four-row tapered roller bearings
Metric series Four-row tapered roller bearingsMetric series Four-row tapered roller bearingsMetric series Four-row tapered roller bearingsMetric series Four-row tapered roller bearings

Metric series Four-row tapered roller bearings

Four row tapered roller bearings are also roller diameter bearings widely used. The type of bearing has a large carrying capacity and can carry the combined radial and axial loads mainly consisting of radial load at the same time. 
They  are mainly used for work rolls and support rolls of various plate and strip rolling mills and roughing mills. Adjusting the thickness of the spacer ring and the clearance of the bearing make such bearing more suitable for the working conditions.

Specifications
Metric series Four-row tapered roller bearings

 

 
Dimensions Basic load Designations Installation dimensions(mm) Calculated constant Axial load Mass Limiting
ratings factors speeds
mm kN Current  Original dbmax Damin ramax rbmax e Y2 Y3 Y0 kg r/min
d D T rmin r1min Cr Cor                       Grease Oil
150 210 165 2.5 2 700 1700 382930 2077930 160 196 2.5 2 0.4 1.7 2.5 1.7 16.5 670 850
  212 155 3 2.5 964 2350 30630 - 164 192 2.5 2.5 0.4 1.7 2.5 1.7 16.8 670 850
160 220 165 2.5 2 795 2090 382932 2077932 177 205 2.5 2.5 0.29 2.3 3.5 2.3 18.5 670 850
  265 173 3 2.5 1450 2760 380632 - 184 239 2.5 2.5 0.4 1.7 2.5 1.7 35.7 670 850
170 240 175 3 2.5 1210 3000 380634 - 186 217 2.5 2.5 0.4 1.7 2.5 1.7 24.2 670 850
  260 230 3 2.5 907 1720 382034 2077134 183 240 2.5 2 0.44 1.5 2.3 1.5 39.5 670 850
180 250 185 2.5 2 1280 3400 382936 - 195 224 2.5 2 0.44 1.5 2.3 1.5 27.5 670 850
  260 160 2.5 2 1140 2550 380636 - 200 236 2.5 2 0.37 1.7 2.7 1.8 26.7 670 850
200 282 206 3 2.5 1680 2510 380640 - 219 255 2.5 2.5 0.39 1.7 2.5 1.7 42.1 560 700
  310 200 3 2.5 1660 3100 382040X2 2077140 226 279 2.5 2.5 0.4 1.7 2.5 1.7 55.6 560 700
  310 275 3 2.5 1760 4200 382040 2077140 213 284 3 2.5 0.37 1.7 2.3 2.1 75.1 560 700
205 320 205 3 3 1590 3260 380641 77741 220 292 2.5 2.5 0.46 1.5 2.2 1.4 57 500 630
220 340 305 4 3 2070 5430 382044 2077144 234 314 4 3 0.35 1.9 2.8 1.9 97.9 500 630
225 320 230 2.5 2 1910 5000 380645 77745 245 288 2.5 2 0.41 1.7 2.5 1.7 58 500 630
230 315 190 2.5 2 1600 4310 380646 77746 250 286 2.5 2 0.36 1.9 2.8 1.8 42.5 500 630
240 360 310 4 3 2110 5610 382048 2077148 256 334 4 3 0.31 2.2 3.2 2.1 90.5 450 560
250 385 255 5 4 2870 6450 381050 77150 268 366 5 4 0.38 1.8 2.6 1.7 107 380 480
260 360 265 3 2.5 1760 5220 382952 2077952 274 337 3 2.5 0.37 1.8 2.7 1.8 76.3 450 560
  400 255 4 7.5 2300 5000 380652 77752 290 362 3 3 0.39 1.8 2.6 1.7 114 490 600
  400 345 5 4 2960 7380 382052 2077152 277 370 5 4 0.29 2.3 3.4 2.3 153 430 530
  440 300 2 5 3550 8200 380152 777752 286 396 4 3 0.35 1.9 2.9 1.9 164 450 560
280 395 288 5 5 3051 8320 380656 - 308 355 3 3 0.35 1.9 2.9 1.9 108 450 560
  420 250 5 5 2780 5700 380656X2 77756 315 371 3 3 0.42 1.6 2.4 1.6 119 450 560
  460 324 5 4 2840 7290 381156 1077756 320 415 4 3 0.33 2 3 2 200 360 450
300 420 300 4 3 2330 7210 382960 2077960 330 380 3 2.5 0.29 2.3 3.5 2.3 130 380 480
  420 310 4 3 3250 8150 380660 77860 331 379 3 3 0.29 2.3 3.5 2.3 134 380 480
  460 390 5 4 3180 9330 382060 2077160 333 410 4 3 0.31 2.2 3.2 2.1 238 360 450
  500 350 5 4 2980 6950 381160X2 77760                 286 340 430
  500 370 5 4 3390 8710 381160 1077760 320 450 4 3 0.32 2 3 2 285 340 430
320 460 338 4 4 2950 8200 380664 77764 350 417 3 3 0.4 1.7 2.5 1.7 180 360 450
  460 380 4 4 3100 8750 380664X2 77864 350 417 3 3 0.37 1.8 2.7 1.8 218 360 450
  480 390 5 4 3180 9330 382064 2077164 360 427 4 3 0.42 1.6 2.4 1.6 234 340 430
  540 364 5 5 6330 14400 381164X2 - 365 475 4 4 0.39 1.7 2.6 1.7 347 340 430
340 460 310 4 3 2480 8100 382968 2077968 370 416 3 2.5 0.31 2.2 3.2 2.1 145 340 430
  480 350 5 5 4400 12600 380668 - 375 432 4 4 0.29 2.3 3.5 2.3 195 320 400
  520 325 5 4 3100 8620 381068 77168 380 470 4 3 0.39 2.3 3.5 2.2 234 320 400
  580 425 5 4 4580 11700 381168 1077768 357 546 4 3 0.42 1.6 2.4 1.6 441 280 360
350 590 420 2 5 4700 9700 380670 77770 368 560 2 4 0.7 1 1.4 0.9 475 280 360
355 490 316 4 4 4520 12200 380671 - 385 445 3 3 0.33 2 3 2 115 320 400

 

 

 
Dimensions Basic load Designations Installation dimensions(mm) Calculated constant Axial load Mass Limiting
ratings factors speeds
mm kN Current  Original dbmax Damin ramax rbmax e Y2 Y3 Y0 kg r/min
d D T rmin r1min Cr Cor                       Grease Oil
360 480 310 4 3 2760 8300 382972 2077972                 149 340 430
  480 375 3 3 3010 7870 382972X2 77872 379 434 2.5 2.5 0.36 1.9 2.8 1.8 189 340 430
  520 370 4 4 5560 14600 380672 - 393 467 3 3 0.33 2 3 2 253 300 380
  540 325 5 4 3388 8840 381072 77172 398 480 4 3 0.3 2.3 3.3 2.2 248 300 380
  540 360 5 5 5070 12500 381072X2 - 398 480 4 4 0.4 1.7 2.5 1.7 274 300 380
  600 420 6 6 7900 14000 381172 1077772                 388 280 360
  600 540 5 5 9970 24900 381172X2 - 408 526 4 4 0.42 1.6 2.4 1.6 620 240 360
370 490 292 3 3 3800 11600 380674 - 400 446 2.5 2.5 0.34 2 3 1.9 149 340 430
380 520 400 4 3 5560 16100 380676 - 411 471 3 2.5 0.35 1.9 2.9 1.9 240 280 380
  560 325 5 4 3360 8840 381076 77176 405 530 4 3 0.31 2.1 3.2 2.1 281 280 380
  560 360 5 5 5730 14000 381076X2 - 405 530 4 3 0.35 1.9 2.9 1.9 294 280 360
  620 388 6 6 4200 9500 381176X2 3077776                 443 240 360
  620 420 5 4 4710 12300 381176 1077776 405 570 4 3 0.46 1.5 2.2 1.4 519 240 360
395 545 288.7 4 7.5 2610 7490 380679 77779 415 504 3 6 0.44 1.5 2.3 1.5 194 280 360
400 540 280 4 4 3100 8750 380680 77880 420 510 3 3 0.44 1.5 2.3 1.5 175 280 360
  600 356 5 4 4160 10400 381080 77180 420 560 4 3 0.4 1.7 2.5 1.7 317 240 320
420 620 356 5 4 4160 10400 381084 77184 450 570 4 3 0.41 1.6 2.4 1.6 358 220 300
  700 480 6 5 6780 18500 381184 1077784 460 645 5 4 0.32 2.1 3.2 2.1 760 190 260
  760 500 7.5 7.5 9350 20300 380684 77884 460 724 6 6 0.35 1.9 2.9 2.1 1039 180 240
440 620 454 6 6 3960 7880 380688 77888 469 570 5 5 0.4 1.7 2.5 1.6 440 200 280
  650 355 6 6 4290 12390 380088 77788 468 618 5 5 0.43 1.6 2.3 1.5 385 200 280
  650 376 6 5 4330 13700 381088 77188 469 606 5 4 0.43 1.6 2.3 1.5 401 200 280
460 620 310 4 3 3360 10200 381992 1077992 480 590 3 2.5 0.4 1.7 2.5 1.7 232 200 280
  650 474 6 6 5292 11270 380692 77892 484 580 5 5 0.41 1.7 2.5 1.6 495 180 240
  680 410 6 5 5130 14200 381092 77192 489 636 5 4 0.31 2.2 3.2 2.1 476 180 240
  730 440 4 7.5 6500 15100 380692X3 77792 489 694 3 6 0.75 0.9 1.3 0.9 694 170 220
475 660 450 5 5 7330 22400 380695 77795 518 593 4 4 0.37 1.8 2.7 1.8 457 170 220
480 650 338 5 4 2450 5400 381996 1077996 515 595 4 4 0.42 1.6 2.4 1.6 301 190 260
  678 494 6 6 10600 31900 380696 - 526 608 5 5 0.34 2 3 1.9 578 170 220
  700 342 6 6 7050 17900 381096X2 - 545 628 5 5 0.39 1.7 2.6 1.7 447 170 220
  700 420 6 5 5780 16900 381096 77196 510 655 5 4 0.32 2.1 3.1 2.1 547 170 220
  790 510 7.5 7.5 11570 26900 381196X2 - 569 695 6 6 0.39 1.7 2.6 1.7 1017 120 160
490 625 385 4 4 5070 17670 380698 - 512 572 3 3 0.42 1.6 2.4 1.6 282 170 220
500 720 420 6 5 6650 19400 3810/500 771/500 530 674 5 4 0.33 2.1 3.1 2 565 160 200
  830 540 7.5 7.5 13230 33000 3811/500X2 - 592 728 6 6 0.39 1.7 2.6 1.7 1194 120 160
508 762 420 6 6 9050 23900 3806/508 - 567 687 5 5 0.36 1.9 2.8 1.8 684 160 200
520 735 535 6 6 10580 33400 3806/520 - 572 659 5 5 0.33 2 3 2 721 160 200
530 780 450 6 5 7520 21500 3810/530 771/530 560 742 5 4 0.38 1.8 2.6 1.7 744 140 180
  870 560 7.5 7.5 14400 36150 3811/530X2 - 598 766 6 6 0.39 1.7 2.6 1.7 1342 120 160
  870 590 7.5 6 9300 26100 3811/530 10777/530 570 794 6 5 0.46 1.5 2.2 1.4 1422 120 160
  880 544 7.5 7.5 10500 25600 3806/530 30777/530 570 794 6 6 0.46 1.5 2.2 1.4 1350 120 160
540 690 400 5 5 4860 17300 - 779/540                 375 160 200
560 730 410 4 6 5560 18900 3828/560X -                 441 140 180

 

 
Dimensions Basic load Designations Installation dimensions(mm) Calculated constant Axial load Mass Limiting
ratings factors speeds
mm kN Current  Original dbmax Damin ramax rbmax e Y2 Y3 Y0 kg r/min
d D T rmin r1min Cr Cor                       Grease Oil
560 750 368 5 4 4370 13300 3819/560 10779/560 586 710 4 3 0.43 1.6 2.3 1.5 456 140 180
  920 620 7.5 6 11200 26100 3811/560 10777/560 604 848 6 5 0.39 1.7 2.6 1.7 1635 100 140
600 800 365 5 5 5000 17800 - 779/600                 489 120 160
  800 380 5 4 5500 18900 3819/600 10779/600 625 760 4 3 0.33 2.1 3.1 2 536 120 160
  855 620 6 6 14700 48100 3806/600 - 665 758 5 5 0.33 2 3 2 1155 100 140
  870 415 6 6 9790 27200 3810/600X2 - 665 782 5 5 0.37 1.8 2.7 1.8 831 100 140
  870 480 6 5 8370 25400 3810/600 771/600 630 821 5 4 0.41 1.6 2.4 1.6 995 100 140
  980 615 7.5 6 17600 45600 3811/600X2 - 704 866 6 6 0.39 1.7 2.6 1.7 1865 90 120
  980 650 7.5 6 12700 36700 3811/600 10777/600 644 908 6 5 0.32 2.1 3.2 2.1 1970 90 120
625 815 480 5 5 10400 31700 3806/625 777/625 657 758 4 4 0.32 2 3 2 647 100 140
630 850 418 6 5 6440 19800 3819/630 10779/630 657 800 5 4 0.4 1.7 2.5 1.7 720 100 140
  890 650 7.5 7.5 16970 53800 3806/630 - 654 830 6 6 0.33 2 3 2 1293 100 140
  920 515 7.5 6 9170 26800 3810/630 771/630 669 858 6 5 0.42 1.6 2.4 1.6 1158 95 130
  920 600 7.5 7.5 16500 48200 3810/630X2 - 654 842 6 6 0.36 1.9 2.8 1.8 1342 90 120
  1030 645 7.5 7.5 20270 53160 3811/630X2 - 668 937 6 6 0.37 1.8 2.7 1.8 2162 85 110
  1030 670 7.5 6 14400 39900 3811/630 10777/630 673 959 6 5 0.3 2.3 3.4 2.3 2170 85 110
650 1030 560 7.5 12 11460 22050 3806/650 777/650 684 962 6 9.5 0.3 2.1 3.2 2.1 1769 85 110
660 1070 650 7.5 7.5 12600 26500 3806/660 777/660 738 950 6 6 0.31 2.2 3.2 2.1 2282 80 100
670 900 412 6 5 6940 22300 3819/670 10779/670 700 855 5 4 0.44 1.5 2.3 1.5 959 95 130
  950 700 7.5 7.5 19800 61900 3806/670 - 744 861 6 6 0.33 2 3 2 1599 90 120
  980 475 7.5 7.5 13880 36500 3810/670X2 - 756 880 6 6 0.37 1.8 2.7 1.8 1224 90 120
  1090 690 7.5 7.5 22700 58800 3811/670X2 - 777 986 6 6 0.37 1.8 2.7 1.8 2566 75 95
  1090 710 7.5 6 15700 39900 3811/670 10777/670 777 986 6 6 0.32 2.1 3.2 2.1 2665 75 95
710 1030 490 7.5 7.5 14500 40600 3810/710X2 - 813 923 6 6 0.37 1.8 2.7 1.8 1372 75 95
  1030 555 7.5 6 11200 35800 3810/710 771/710 752 962 6 5 0.43 1.6 2.3 1.5 1568 75 95
  1150 710 9.5 8 24500 65000 3811/710X2 - 829 1008 8 8 0.37 1.8 2.7 1.8 2931 48 80
  1150 750 9.5 8 15840 33960 3811/710 10777/710 762 1078 8 6 0.32 2.1 3.2 2.1 3227 48 80
730 1035 755 7.5 7.5 22500 73200 3806/730 - 825 928 6 6 0.33 2 3 2 2043 75 95
750 1090 515 7.5 6 16200 45600 3810/750X2 - 860 990 6 6 0.37 1.8 2.7 1.8 1619 70 90
  1090 605 7.5 6 13100 42400 3810/750 771/750 793 1020 6 5 0.42 1.7 2.4 1.6 1874 70 90
  1130 690 7.5 7.5 19000 51700 3806/750 777/750 790 1076 6 6 0.47 1.4 2.1 1.4 2516 48 80
  1220 750 9.5 8 27430 7380 3811/750X2 - 856 1100 8 8 0.37 1.8 2.7 1.8 3504 48 80
  1220 840 9.5 8 21900 68000 3811/750 10777/750 807 1130 8 6 0.32 2.1 3.2 2.1 3994 48 80
774 1130 690 4 7.5 16700 50100 - 777/774                 2400 48 80
780 1220 840 9.5 8 28400 74000 3806/780 779/780 873 1091 8 8 0.35 1.9 2.9 1.9 3659 48 80
800 1120 820 7.5 7.5 26200 86300 3806/800 - 887 1008 6 6 0.33 2 3 2 2842 - -
840 1170 840 7.5 7.5 26300 86400 3806/840 - 920 1044 6 6 0.33 2 3 2 2840 - -
850 1360 900 12 9.5 38900 140600 3811/850 10777/850 900 1200 9.5 8 0.34 2 2.98 2 5168 - -
950 1360 880 7.5 6 23300 83600 3820/950 20771/950 1000 1290 6 5 0.26 2.6 3.8 2.6 4087 - -
1060 1500 1000 9.5 8 29100 105000 3820/1060 20771/1060 1117 1420 8 6 0.26 2.6 3.8 2.6 5698 - -
1070 1400 889.762 4 12 27270 90000 BT4B 328100 -                 3730 - -
1080 1450 950 5 12 30240 97200 BT4B 331559 -                 4450 - -
1250 1550 890 5 12 27270 102600 BT4B 328819 -                 3820 - -
1260 1640 1000 5 12 35190 128700 BT4B 332124 -                 5800 - -
1300 1720 1040 5 12 38610 126000 BT4B 331950 -                 7000 - -
1500 1900 1080 4 12 42120 153000 BT4B 332078 -                 7700 - -
1580 1960 1080 5 12 41130 158400 BT4B 331934 -                 7800 - -

 

Product introduction

Four row tapered roller bearings are also roller diameter bearings widely used. The type of bearing has a large carrying capacity and can carry the combined radial and axial loads mainly consisting of radial load at the same time. Its radial load capacity is about 2.5-3.5 times larger than single row bearing, and it can carry large radial load and axial load. Due to limited structure, its limit speed is relatively lower than that of four row cylindrical roller bearing. Four row tapered roller bearings can carry axial load in two directions, so they can be used as bidirectional thrust bearings.

Four row tapered roller bearings are mainly used for work rolls and support rolls of various plate and strip rolling mills and roughing mills. Adjusting the thickness of the spacer ring and the clearance of the bearing make such bearing more suitable for the working conditions.

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