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Help CenterFour Row Tapered Roller Bearing360TQO480-1 360 x 480 x 370 mm 181 kg
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Tapered Roller Bearing
The inner and outer ring raceways are segments of cones and the rollers are also made with a taper so that the conical surfaces of the raceways and the roller axes if projected, would all meet at a common point on the main axis of the bearing. This geometry makes the motion of the cones remain coaxial, eliminating sliding motion in the bearing.
This conical geometry is used as it gives a larger contact patch, which permits greater loads to be carried than with spherical (ball) bearings, while the geometry means that the tangential speeds of the surfaces of each of the rollers are the same as their raceways along the whole length of the contact patchand no differential scrubbing occurs. When a roller slides rather than rolls, it can generate wear at the roller-to-race interface, i.e. the differences in surface speeds creates a scrubbing action. Wear will degenerate the close tolerances normally held in the bearing and can lead to other problems. Much closer to pure rolling can be achieved in a tapered roller bearing and this avoids rapid wear.
The rollers are guided by a flange on the inner ring. This stops the rollers from sliding out at high speed due to their momentum.
The larger the half angles of these cones the larger the axial force that the bearing can sustain.
Tapered roller bearings are separable and have the following components: outer ring, inner ring, and roller assembly (containing the rollers and a cage). The non-separable inner ring and roller assembly is called the cone, and the outer ring is called the cup. Internal clearance is established during mounting by the axial position of the cone relative to the cup.
Metric tapered roller bearings follow the designation system defined by ISO 355.
Applications
In many applications tapered roller bearings are used in back-to-back pairs so that axial forces can be supported equally in either direction.
Pairs of tapered roller bearings are used in car and vehicle wheel bearings where they must cope simultaneously with large vertical (radial) and horizontal (axial) forces. Applications for tapered roller bearings are commonly used for moderate speed, heavy duty applications where durability is required. Common real world applications are in agriculture, construction and mining equipment, axle systems, gear box, engine motors and reducers, propeller shaft, railroad axle-box, differential etc.
| (mm) | (kg) | ||||||||
| Boundary Dimensions | Basie Load Ratings(kN) | Bearing Code | Mass | ||||||
| d | D | T | B | r1.2min | r3.4min | Cr | Cor | New | Refer. |
| 730 | 940 | 500 | 500 | 3.5 | 8 | 12100 | 36000 | 730TQO940-1 | 925 |
| 1035 | 755 | 755 | 7.5 | 7.5 | 20400 | 58500 | 730TQO1035-1 | 2070 | |
| 730.25 | 1035.05 | 755.65 | 755.65 | 3.2 | 6.4 | 19600 | 54300 | M283449D/M283410/M283410D | 2010 |
| 749.3 | 990.6 | 605 | 605 | 3.2 | 6.4 | 15700 | 47700 | LM283649D/LM283610/LM283610D | 132 |
| 1066.8 | 736.6 | 723.9 | spec | 12.7 | 20600 | 58000 | EE325296D/325420/325421XD | 2190 | |
| 1130.3 | 685.8 | 685.8 | 7.5 | 7.5 | 19700 | 46500 | 749TQO1130A-1 | 2330 | |
| 750 | 1090 | 515 | 515 | 7.5 | 7.5 | 14700 | 36500 | 750TQO1090-1 | 1640 |
| 1130 | 690 | 690 | 4 | 7.5 | 20100 | 46500 | 750TQO1130-1 | 2430 | |
| 1220 | 750 | 750 | 9.5 | 9.5 | 24900 | 59000 | 750TQO1220-1 | 3550 | |
| 1220 | 840 | 840 | 9.5 | 9.5 | 19700 | 54300 | 107770750 | 3985 | |
| 762 | 1066.8 | 736.6 | 723.9 | 5 | 12.7 | 21000 | 59500 | M284148DW/M284111/284110D | 2100 |
| 1079.5 | 787.4 | 787.4 | 4.8 | 12.7 | 22200 | 62700 | M284249D/M284210/M284210XD | 2270 | |
| 780 | 1220 | 840 | 840 | 6 | 6 | 21100 | 70500 | 3806/780/HCC9 | 38100 |
| 785 | 1030 | 605 | 605 | 6 | 7.5 | 15300 | 47500 | 785TQO1030-1 | 1390 |
| 785 | 1040 | 560 | 560 | 4.8 | 9.7 | 14200 | 41500 | 785TQO1040-1 | 1330 |
| 1120 | 820 | 820 | 7 | 7 | 23800 | 69000 | 800TQO1120-1 | 2600 | |
| 1150 | 535 | 535 | 7.5 | 7.5 | 15600 | 37100 | 800TQO1150-1 | 1850 | |
| 1280 | 770 | 770 | 9.5 | 9.5 | 24900 | 54800 | 800TQO1280-1 | 3890 | |
| 812.8 | 1143 | 768.35 | 768.35 | 6.4 | 12.7 | 22000 | 63000 | 812TQO1143A-1 | 2590 |
| 825.5 | 1168.4 | 844.55 | 844.55 | 4.8 | 12.7 | 26000 | 72300 | M285848D/0285810/M285810D | 2990 |
| 825.5 | 1193.8 | 812.8 | 812.8 | 6.4 | 12.7 | 30000 | 67000 | EE631325DW/631470/631470D | 3110 |
| 840 | 1170 | 840 | 840 | 7 | 7 | 25900 | 76000 | 840TQO1170-1 | 2900 |
| 850 | 1220 | 565 | 565 | 7.5 | 7.5 | 17000 | 40400 | 850TQO1220-1 | 2190 |
| 1360 | 820 | 820 | 12 | 12 | 26800 | 59000 | 850TQO1360-1 | 4670 | |
| 1360 | 910 | 910 | 6 | 12 | 34700 | 83000 | 850TQO1360-2 | 5440 | |
| 863.6 | 1130.3 | 669.925 | 669.925 | 4.8 | 12.7 | 19100 | 59600 | LM286249D/LM286210/LM286210D | 1780 |
| 1169.987 | 844.55 | 844.55 | 4.8 | 12.7 | 23800 | 76500 | 863TQO1169A-1 | 2700 | |
| 1181.1 | 666.75 | 666.75 | 4.8 | 12.7 | 20900 | 57000 | LM286449DGW/LM286410/LM286410D | 2150 | |
| 1219.2 | 876.389 | 876.389 | 4.8 | 12.7 | 28300 | 81000 | 863TQO1219A-1 | 3350 | |
| 1219.2 | 889 | 876.3 | 4.8 | 12.7 | 28500 | 84600 | EE547341D/547480/547481D | 3330 | |
| 877.888 | 1220 | 844.55 | 844.55 | 4.8 | 12.7 | 26000 | 76500 | LM286749DGW/LM286711/LM286710 | 3080 |
| 900 | 1280 | 580 | 580 | 7.5 | 7.5 | 18700 | 45000 | 900TQO1280-1 | 2430 |
| 901.7 | 1295.4 | 914.4 | 901.7 | 4.8 | 12.7 | 30500 | 88000 | EE634356D-510-510D | 4010 |
| 938.213 | 1270 | 825.5 | 825.5 | 4.8 | 12.7 | 26800 | 79800 | LM287649D/LM287610/LM287610D | 3150 |
| 939.8 | 1333.5 | 952.5 | 952.5 | 4.8 | 12.7 | 33500 | 95400 | LM287849D/LM287810/LM287810D | 4380 |
| 950 | 1360 | 620 | 620 | 7.5 | 7.5 | 20600 | 49900 | 950TQO1360-1 | 2970 |
| 1001 | 1360 | 800 | 800 | 12 | 12.7 | 27500 | 81500 | 1001TQO1360-1 | 3390 |
| 1003.3 | 1358.9 | 800.1 | 800.1 | 4.8 | 12.7 | 27500 | 81500 | 1003TQO1358A-1 | 3450 |
| 1006.475 | 1295.4 | 764 | 764 | 4.8 | 12.7 | 23100 | 76500 | LM288249D/LM288210/LM288210D | 2590 |
| 1070 | 1400 | 889.762 | 889.762 | 4 | 12 | 30300 | 100000 | 1070TQO1400-1 | 3730 |
| 1080 | 1450 | 950 | 950 | 5 | 12 | 33600 | 108000 | 1080TQO1450-1 | 4450 |
| 1200.15 | 1593.85 | 990.6 | 990.6 | 4.8 | 12.7 | 38000 | 125000 | LM288949DGW/LM288910/LM288910D | 5635 |
| 1250 | 1550 | 890 | 890 | 5 | 12 | 30300 | 114000 | 1250TQO1550-1 | 3820 |
| 1260 | 1640 | 1000 | 1000 | 5 | 12 | 39100 | 143000 | 1260TQO1640-1 | 5800 |
| 1300 | 1720 | 1040 | 1040 | 5 | 12 | 42900 | 140000 | 1300TQO1720-1 | 7000 |
| 1370 | 1765 | 1050 | 1035 | 5 | 12 | 42900 | 153000 | 1370TQO1765-1 | 6960 |
| 1500 | 1900 | 1080 | 1080 | 4 | 12 | 46800 | 170000 | 1500TQO1900-1 | 7700 |
| 1915 | 1105 | 1220 | spec | spec | 44500 | 168000 | 1500TQO1915-1 | 8410 | |
| 1580 | 1960 | 1080 | 1080 | 5 | 12 | 45700 | 176000 | 1580TQO1960-1 | 7800 |
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