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Four-row tapered roller bearings
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Four-row tapered roller bearings are one of the mainly roll neck bearings and the capacity of their radial and axial loads is high. They can carry heavy axial loads in two directions, and their radial loads capacity is 3 times heavier than single-row tapered roller bearings. But the limiting speed is lower. They can be used as axial locating bearings in two directions because they are able to limit axial displacement in two directions within axial clearance. The radial and axial clearance also can be adjusted by changing the width of spacer between inner and outer rings.
Four-row tapered roller bearings are mainly used in working roll necks of hot or cold rolling mill, and roll neck of cogging mills. The radial and axial clearance can be adjusted by changing the spacer between the inner ring and outer ring.
Here you will find details of such kind of bearings.
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download: Four-row tapered roller bearings
Boundary dimensions Basic load ratings Designations Mass Limiting speeds mm kN Current Original kg r/min d D T C rmin r1min Cr Cor Grease Oil 150 210 86 70 2.5 1 419 887 352930E 2097930 8.5 900 1300 250 138 112 2.5 1 858 1620 352130 2097730 26 850 1100 270 164 130 4 1 1250 2250 352230 97530E 38 800 1000 270 172 138 4 1 1250 2250 352230X2 97530 38 800 1000 160 240 115 90 3 1 641 1400 352032X2 2097132 14.9 850 1100 270 150 120 3 1 1050 2030 352132 2097732 32.5 800 1000 290 178 144 4 1 1400 2730 352232 97532E 49 700 900 170 260 120 95 3 1 672 1460 352034X2 2097134K 21 800 1000 180 280 134 108 3 1 952 1880 352036X2 2097136 29 670 850 280 142 110 3 1 952 1880 352036 2097136E 28.5 800 1000 300 164 134 3 1 1290 2540 352136 2097736 44 670 850 320 192 152 5 1.1 1750 3350 352236 97536E 62.5 600 750 190 289.5 100 40 3 3 750 1500 372038 - 27 700 900 320 170 130 3 1 1440 2800 352138 2097738 51 670 850 200 280 116 92 3 1 758 1423 352940X2/YA 2097940 14.8 700 900 280 105 80 3 1 650 2660 352940X2 2097940 18.5 700 900 310 152 120 2.5 1.1 1180 2720 352040X2 2097140 41 670 850 340 184 150 3 1 1680 3340 352140 2097740 64 670 850 360 218 174 5 1.1 2310 4250 352240 97540E 90.5 600 750 220 300 110 88 3 1.2 660 1710 352944X2 2097944 21.2 670 850 340 165 130 4 1 1360 2790 352044X2 2097144 47.7 600 750 370 195 150 4 1.1 1740 3450 352144 2097744 76.3 600 750 230 355 145 110 6 3 1060 2040 350646D1 37746 43.6 600 750 240 320 116 92 3 1 820 1910 352948X2 2097948E 22.3 600 750 320 110 90 3 1.5 820 1910 352948X2 2097948 23 600 750 360 165 130 4 1 1370 3180 352048X2 2097148 52.8 530 670 360 166 128 4 1 1370 3180 352048 2097148E 55.6 530 670 260 360 134 52 3.5 2.5 1150 2300 372952 - 43.5 530 670 Boundary dimensions Basic load ratings Designations Mass Limiting speeds mm kN Current Original kg r/min d D T C rmin r1min Cr Cor Grease Oil 260 360 134 108 3 1 1263 2430 352952X2 2097952 36.8 530 670 400 150 110 6 1.5 1240 2330 - 37852 60.3 530 670 400 186 146 5 1.1 1780 3830 352052X2 2097152 76.8 500 630 400 190 146 5 1.1 1780 3830 352052 2097152 79.5 500 630 430 180 130 10 3 2100 2800 350652D1 37752 87.9 500 630 430 180 130 7.5 1.5 2237 3016 350652 97752 93.4 500 630 440 225 180 4 1.1 2480 5050 352152 2097752 124 450 560 280 380 134 108 3 1.1 1080 2810 352956X2 2097956 41.3 480 600 420 133 106 4 2 1270 1936 351056 97156 58.1 450 560 420 186 146 5 1.1 1860 4000 352056X2 2097156 81.5 450 560 300 420 160 128 4 1.1 1470 3530 352960X2 2097960 64 450 560 460 210 165 4 1.5 2200 4940 352060X2 2097160 118 430 530 500 205 152 5 1.5 2200 4500 351160 1097760 144 400 500 320 440 160 128 4 1.5 1410 3830 352964X2 2097964 67 430 530 480 210 84 5 4 2340 6130 372064X2 - 133 400 500 480 210 160 5 1.1 1830 4390 352064X2 2097164 122 400 500 340 460 160 128 4 1 1575 4050 352968X2 2097968 71 400 500 520 180 135 5 1.5 1904 4070 351068 97168 119 380 480 580 242 170 5 1.5 2870 5970 351168 1097768 214 340 430 350 590 200 140 9.5 1.5 2800 5500 350670 97770 212 320 400 360 480 160 128 4 1 1490 4270 352972X2 2097972 74.3 380 480 530 155 110 5 1.5 1690 3300 350672D1 37772 109 380 480 530 155 110 5 1.5 1690 3300 350672 97772 107 380 480 540 169 134 6 2 1980 3950 351072X2 97872 122 340 430 540 185 140 5 1.5 2120 4910 351072 97172 127 360 450 600 242 170 5 1.5 2950 6270 351172 1097772 235 320 400 379 681.5 307 118 2.5 6 5600 11700 3706/379 - 512 300 380 Boundary dimensions Basic load ratings Designations Mass Limiting speeds mm kN Current Original kg r/min d D T C rmin r1min Cr Cor Grease Oil 380 520 145 105 4 1.1 1210 3250 351976 1097976 80.3 360 450 560 190 140 5 1.5 2150 5090 351076 97176 146 340 430 620 242 170 5 1.5 3310 7430 351176 1097776 243 300 380 400 540 150 105 4 1.1 1210 3110 351980 1097980 86.9 320 400 590 185 123 5 2 2710 5950 350180D 37780 166 320 400 600 206 150 5 1.5 2620 6380 351080 97180 180 300 380 420 560 145 105 4 1.1 1450 3740 351984 1097984 88.7 300 380 620 190 125 5 1 2450 5700 350184D 37784 171 280 360 620 206 150 5 1.5 2650 6600 351084 97184 187 280 360 700 275 200 6 2.5 4270 8810 351184 1097784 392 240 340 440 600 170 125 4 1.1 1890 4860 351988 1097988 114 280 360 650 212 152 6 2.5 2750 7020 351088 97188 213 260 340 460 620 174 130 4 1.1 1910 4990 351992 1097992 130 260 340 680 230 175 6 2.5 2680 5900 351092 97192 253 220 300 480 650 180 130 5 1.5 1950 5270 351996 1097996 151 240 320 700 240 180 6 2.5 3330 8190 351096 97196 281 200 280 490 640 180 144 7.5 3 2290 6600 350698 97798 140 220 300 500 670 180 130 5 1.5 2150 6120 3519/500 10979/500 159 220 300 720 236 180 6 2.5 3390 8450 3510/500 971/500 289 190 260 520 740 190 120 2.5 2.5 2780 6800 3506/520 977/520 231 190 260 530 710 190 136 5 1.5 2390 6800 3519/530 10979/530 190 190 260 730 250 106 6 6 5350 14800 3706/530 - 354 160 200 560 750 213 156 5 1.5 2550 7060 3519/560 10979/560 235 170 220 820 260 185 6 2.5 4340 10800 3510/560 971/560 409 160 200 600 800 205 156 5 1.5 3210 9460 3519/600 10979/600 266 150 190 870 270 198 6 2.5 4880 12730 3510/600 971/600 500 130 170 Boundary dimensions Basic load ratings Designations Mass Limiting speeds mm kN Current Original kg r/min d D T C rmin r1min Cr Cor Grease Oil 630 850 242 182 6 2.5 3730 10390 3519/630 10979/630 368 130 170 670 900 240 180 6 2.5 5300 12300 3519/670 10979/670 416 120 160 710 950 240 175 6 2.5 4070 12400 3519/710X2 10979/710 444 100 140 1030 236 208 7.5 4 5750 14300 3506/710 977/710 651 90 120 1030 315 220 7.5 3 7830 18400 3510/710 971/710 774 90 120 720 915 190 140 3 6 3200 9650 3506/720 977/720 277 100 140 750 1000 264 194 6 2.5 5020 14480 3519/750 10979/750 499 90 120 800 1060 270 204 6 2.5 5020 15000 3519/800 10979/800 604 80 100 850 1120 268 188 6 2.5 5460 16860 3519/850 10979/850 636 75 95 950 1250 300 220 7.5 3 6790 21100 3519/950 10979/950 909 - - 1120 1480 400 296 7.5 4 12060 34200 BT2B 332756 - 1760 - - 1160 1540 400 290 7.5 4 12780 34200 BT2B 332780 - 1900 - - 1250 1500 250 190 6 1.5 6633 20160 BT2B 328339 - 795 - - 1778 2159 394 266.7 12.7 3 13860 47700 BT2B 332496 - 2750 - -
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