Double Row Taper Roller Bearing
Applications
Automotive – Truck and trailer wheel hubs, gearboxes, and differentials
Heavy Machinery – Construction and mining equipment
Steel & Metal Industry – Rolling mills and industrial gearboxes
Railway – Locomotive and wagon axle systems
Wind Turbines – Main shaft and gearbox applications
Key Benefits
High Load Capacity – Supports both radial and bidirectional axial loads
Superior Durability – Advanced materials and heat treatment enhance service life
Enhanced Rigidity – Ensures precise shaft alignment under extreme conditions
Increased Efficiency – Optimized design reduces friction and improves performance
Reliable Performance – Withstands heavy loads, shock, and vibration for demanding applications
Double Row Taper Roller Bearing
A double row taper roller bearing is a type of rolling-element bearing that is designed to support both radial and axial loads. It consists of two rows of tapered roller elements arranged in a specific way to provide high radial and axial load-carrying capacity. This type of bearing is commonly used in heavy-duty applications where high radial and axial forces are present.

One of the key advantages of a double row taper roller bearing is its ability to accommodate misalignment between the shaft and housing, which helps to reduce friction and wear. This makes it ideal for applications where shaft deflection or misalignment is common. The tapered design of the rollers also helps to distribute loads evenly, leading to improved performance and longevity.
| Designation | SKF Designation | d (mm) | D (mm) | T (mm) | C (mm) | d1 (mm) | D1 (mm) | Weihgt (kg) |
| 613328A (M231649-610D) | 613328A | 152,400 | 222,250 | 100,010 | 76,200 | 186 | 210 | 12 |
| BT2B332758/HA4 | BT2B332758/HA4 | 152,400 | 270 | 150 | 120 | 213 | 254 | 32.5 |
| 331792 (46790-720D) | 331792 | 165,100 | 225,425 | 85,725 | 69,850 | 197 | 216 | 10 |
| BT2B328697/HA2 (96649-114CD) | BT2B328697/HA2 | 288,925 | 142,875 | 111,125 | 232 | 270 | 38 | |
| BT2B332585/HA2 (M238840-810D) | BT2B332585/HA2 | 177,800 | 269,875 | 119,062 | 93,662 | 228 | 256 | 23 |
| BT2B328698/HA2 (M238849-810D) | BT2B328698 | 187,325 | 269,875 | 119,062 | 93,662 | 228 | 256 | 21 |
| BT2B332459 (93787-127D) | BT2B332459 | 200,025 | 317,500 | 146,050 | 111,125 | 262 | 298 | 41.5 |
| 331785 (NA132083-126D) | 331785 | 203,200 | 317,500 | 120,650 | 88,900 | 256 | 293 | 34 |
| BT2B328270/HA4 (H242649-610D) | BT2B328270/HA4 | 206,375 | 336,550 | 211,138 | 169,862 | 269 | 318 | 70 |
| 331783A (EE170950-451D) | 331783A | 241,300 | 368,300 | 120,650 | 85,725 | 298 | 336 | 39.5 |
| BT2B332443 (HH249949-910D) | BT2B332443 | 247,650 | 406,400 | 247,650 | 203,200 | 323 | 383 | 120 |
| BT2B328615 | BT2B328615 | 254 | 422,275 | 173,038 | 128,660 | 331 | 400 | 87.5 |
| BT2B331782 (HM252343-310D) | BT2B331782 | 422,275 | 178,592 | 139,700 | 331 | 400 | 97.5 | |
| 331781 (HH953749-710D) | 331781 | 533,400 | 276,225 | 165,100 | 395 | 495 | 260 | |
| BT2B328187/HA2 (HM252349-310D) | BT2B328187/HA2 | 260,350 | 422,275 | 1,785,892 | 139,700 | 331 | 400 | 86.5 |
| 331717A | 331717A | 280 | 470 | 250 | 180 | 368 | 448 | 155 |
| BT2B332449 (LM654648-610D) | BT2B332449 | 285,750 | 380,898 | 139,700 | 107,950 | 335 | 366 | 42 |
| BT2B332503/HA2 (HM256849-810CD) | BT2B332503/HA2 | 288,925 | 406,400 | 165,100 | 130,175 | 342 | 388 | 63 |
| BT2B332503/HA2 (M25549-410CD) | BT2B332504/HA2 | 300,038 | 422,275 | 174,625 | 136,525 | 357 | 403 | 71.5 |
| BT2B332845/HA2 (EE526132/191D) | BT2B332845/HA2 | 330,200 | 482,600 | 177,800 | 127,000 | 401 | 454 | 100 |
| 331775B (HM261049-010DC) | 331775B | 333,375 | 469,900 | 190,500 | 152,400 | 398 | 452 | 98 |
| BT2B332830 | BT2B332830 | 340 | 460 | 160 | 128 | 394 | 442 | 71 |
| BT2B332802A (EE971354-103D) | BT2B332802A | 342,900 | 533,400 | 174,625 | 123,825 | 422 | 496 | 130 |
| BT2B332505/HA2 (L163149-110CD) | BT2B332505/HA2 | 355,600 | 444,500 | 136,525 | 111,125 | 398 | 428 | 46 |
| BT2B332506/HA2 (EE231400-976D) | BT2B332506/HA2 | 501,650 | 155,575 | 107,950 | 431 | 481 | 87 | |
| BT2B332603/HA1 (HM265049/010D) | BT2B332603/HA1 | 368,249 | 523,875 | 214,312 | 169,862 | 438 | 499 | 140 |
| 331606A (EE231462-976CD) | 331606A | 371,475 | 501,650 | 155,575 | 107,950 | 431 | 481 | 76.5 |
| BT2B332507/HA2 (EE192150-201CD) | BT2B332507/HA2 | 381 | 508 | 139,700 | 88,900 | 442 | 482 | 67 |
| BT2B328389 (EE234160-213CD) | BT2B328389 | 406,400 | 539,750 | 142,875 | 101,600 | 473 | 516 | 82.4 |
| 331656 (M268749-710CD) | 331656 | 415,925 | 590,550 | 244,475 | 193,675 | 497 | 563 | 205 |
| BT2B332176A (M270749-710DC) | BT2B332176A | 447,675 | 635 | 257,175 | 206,375 | 534 | 605 | 245 |
| BT2B328930A/HA2 (EE244180-236CD) | BT2B328980A/HA2 | 457,200 | 596,900 | 165,100 | 120,650 | 565 | 571 | 110 |
| 331657 (M272749-710DC) | 331657 | 479,425 | 679,450 | 276,225 | 222,250 | 572 | 651 | 302 |
| 331776A (EE243192-251D) | 331776A | 489,026 | 634,873 | 177,800 | 142,875 | 556 | 610 | 130 |
| BT2B332605A/HA1 (M274149-110CD) | BT2B332605A/HA1 | 501,650 | 711,200 | 292,100 | 231,775 | 596 | 678 | 343 |
| BT2B332761 (EE982051-901CD) | BT2B332761 | 520,700 | 736,600 | 186,502 | 114,300 | 615 | 691 | 210 |
| BT2B332446 (M276449-410CD) | BT2B332446 | 536,575 | 761,873 | 311,150 | 247,650 | 641 | 726 | 430 |
| BT2B332447 (M278749-710CD) | BT2B332447 | 571,500 | 812,800 | 333,375 | 263,525 | 680 | 774 | 520 |
| 614609 (EE649240-311CD) | 614609 | 609,600 | 812,800 | 190,500 | 146,050 | 691 | 768 | 250 |
| BT2B332448 | BT2B332448 | 787,400 | 206,375 | 158,750 | 687 | 755 | 232 | |
| 331500 | 331500 | 820 | 206,375 | 158,750 | 687 | 755 | 292 | |
| BT2B332493/HA4 | BT2B332493/HA4 | 635 | 990,600 | 339,725 | 212,725 | 810 | 960 | 840 |
| 331290 | 331290 | 685,800 | 876,300 | 200,025 | 152,400 | 772 | 842 | 270 |
| BT2B328028/HA1 (EE755280-361D) | BT2B328028/HA1 | 711,200 | 914,400 | 190,500 | 139,700 | 798 | 877 | 265 |
| 331554A (EE755285-361CD) | 331554A | 723,900 | 914,400 | 187,325 | 139,700 | 798 | 877 | 250 |
| BT2B332764 (EE752305-381D) | BT2B332764 | 774,700 | 965,200 | 187.325 | 133,350 | 853 | 924 | 265 |
| BT2B332625 | BT2B332625 | 774,962 | 1016 | 266,700 | 209,550 | 880 | 976 | 525 |
| 331291B (EE762320-401D) | 331291B | 812,800 | 1016 | 190,500 | 146,050 | 903 | 976 | 350 |
| BT2B328371/HA6 (EE762320-420XD) | BT2B328371/HA6 | 1,066,800 | 190,500 | 146,050 | 903 | 976 | 445 | |
| BT2B332494/HA5 | BT2B332494/HA5 | 863,660 | 137,600 | 469,900 | 285,750 | 1140 | 1309 | 2250 |
| 331387 (M231649DW-610) | 331387 | 152,400 | 222,250 | 84,138 | 84,138 | 170 | 194 | 11.5 |
| BT2B332799 (93801D-125) | BT2B332799 | 203,200 | 317,500 | 133,350 | 133.35 | 231 | 266 | 40 |
| BT2B332683/HA1 (EE420800DW-450) | BT2B332683/HA1 | 368,300 | 158,750 | 152.4 | 242 | 304 | 75 | |
| BT2B332873/HA4 | BT2B332873/HA4 | 220 | 340 | 140 | 200 | 241.3 | 293 | 50.5 |
| BT2B332492 (8576DW-8500) | BT2B332492 | 234,950 | 327,025 | 93,662 | 93,662 | 263 | 290 | 25.5 |
| 331223A (M252349DW-310) | 331223A | 269,875 | 381,000 | 136,525 | 136,525 | 295 | 330 | 51 |
| BT2B332899/HA1 (LM654644D-610) | BT2B332899/HA1 | 279,587 | 380,898 | 117,475 | 117,475 | 308 | 337 | 41.5 |
| BT2B332870/HA4 | BT2B332870/HA4 | 288,925 | 406,400 | 165,100 | 234,950 | 308 | 362 | 73 |
| 331951 (HM256849DW-810) | 331951 | 300,038 | 422,275 | 150,812 | 150,812 | 327 | 375 | 70 |
| BT2B332685/HA1 (HH258249TD-210) | BT2B332685/HA1 | 303,212 | 495,300 | 263,525 | 263,525 | 338 | 417 | 212 |
| BT2B328699G/HA1 (LM528648DW-610) | BT2B328699G/HA1 | 317,500 | 422,275 | 128,588 | 128,588 | 341 | 382 | 51.5 |
| 332240A (LM761649DW-600) | 332240A | 343,052 | 457,098 | 122,238 | 122,238 | 369 | 410 | 54 |
| 331729 | 331729 | 360 | 680 | 330 | 300 | 415 | 541 | 540 |
| BT2B328705/HA1 | BT2B328705/HA1 | 390 | 546,100 | 141,288 | 141,288 | 435 | 491 | 102 |
| BT2B331840C/HA1 (LM767749DW-710) | BT2B331840C/HA1 | 406,400 | 546,100 | 138,113 | 138,113 | 435 | 491 | 89 |
| BT2B331840G/HA1 (LM767749DGW-710) | BT2B331840G/HA1 | 546,100 | 138,113 | 138,113 | 435 | 491 | 89 | |
| 331714B (M667947DW-910) | 331714B | 409,575 | 546,100 | 161,925 | 161,925 | 439 | 496 | 110 |
| BT2B334013/HA1 | BT2B334013/HA1 | 430 | 535 | 84 | 84 | 462 | 494 | 44.5 |
| BT2B323523/HA1 | BT2B328523/HA1 | 450 | 595 | 178 | 178 | 488 | 540 | 140 |
| BT2B328361/HA1 | BT2B328361/HA1 | 464 | 615,950 | 150 | 136 | 498 | 538 | 125 |
| B2TB331848 (EE243193D-250) | BT2B331848 | 489,026 | 634,873 | 152,400 | 152,400 | 525 | 581 | 130 |
| BT1B328381/HA1 | BT2B328381/HA1 | 491 | 635 | 148 | 128 | 523 | 551 | 120 |
| 331676A | 331676A | 500 | 730 | 280 | 280 | 551 | 846 | 420 |
| BT2B332547/HA1 | BT2B332547/HA1 | 501,650 | 673,100 | 184,150 | 184,150 | 537 | 612 | 190 |
| 331182 (M274149DW-110) | 331182 | 711,200 | 250,825 | 250,825 | 545 | 631 | 330 | |
| BT2B328359/HA1 | BT2B328359/HA1 | 522 | 690 | 180 | 160 | 557 | 600 | 190 |
| 331682 (M276448DW-410) | 331682 | 536,575 | 761,873 | 269,875 | 269,875 | 585 | 675 | 410 |
| BT2B332626/HA7 | BT2B332626/HA7 | 560 | 820 | 242 | 242 | 610 | 696 | 425 |
| 331677 | 331677 | 580 | 830 | 280 | 280 | 636 | 742 | 515 |
| BT2B331858/HA1 (EE649241D-310) | 609,600 | 787,400 | 171,450 | 171,450 | 646 | 721 | 218 | |
| BT2B332424/HA3 | BT2B332424/HA3 | 820 | 171,450 | 171,450 | 646 | 721 | 265 | |
| BT2B328306/HA4 | BT2B328306/HA4 | 650 | 1030 | 270 | 270 | 747 | 904 | 900 |
| 331198 | 331198 | 660,400 | 812,800 | 176,212 | 176,212 | 698 | 756 | 195 |
| 331581A | 33581A | 710 | 900 | 197 | 197 | 756 | 834 | 325 |
| BT2B334032/HA4 | BT2B334032/HA4 | 800 | 1260 | 375 | 375 | 921 | 1114 | 1850 |
| 331306 (EE634356DGW-510) | 331306 | 901,700 | 1295,400 | 450,850 | 438,150 | 986 | 1148 | 2000 |
| 331350 (LM287849DW-810) | 331350 | 939,800 | 1,333,500 | 463,550 | 463,550 | 1025 | 1182 | 2230 |
Design and Construction
The design of a double row taper roller bearing typically includes inner and outer rings, tapered rollers, a cage to retain the rollers, and inner and outer races. The inner ring is mounted on the shaft while the outer ring is mounted in the housing. The tapered rollers are positioned between the inner and outer rings in a way that allows them to roll smoothly and distribute loads effectively.
These bearings are usually made from high-quality steel to ensure durability and reliability under heavy loads and harsh operating conditions. The precision engineering involved in the manufacturing process ensures that each component fits together perfectly, resulting in a smooth and efficient operation of the bearing. Additionally, various seal and lubrication options are available to protect the bearing from contamination and maintain optimal performance.

