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Four-row tapered roller bearings, TQO design
Four-row tapered roller bearings can accommodate combined heavy radial and axial loads at low to moderate speeds. They are used almost exclusively in work roll applications such as rolling mills. SKF manufactures four-row tapered roller bearings in TQO and TQI designs, in many variants and with different features…
Product Description
Product Details
Four-row tapered roller bearings can accommodate combined heavy radial and axial loads at low to moderate speeds. They are used almost exclusively in work roll applications such as rolling mills. SKF manufactures four-row tapered roller bearings in TQO and TQI designs, in many variants and with different features.
Very high radial load carrying capacity
Accommodate axial loads in both directions
Axial space-saving solution for roll necks
Low friction
Long service life
Detailed pictures
Parameter table
| Bearing Number | d mm | D mm | B mm | T mm |
| 331138 AG | 139.7 | 200.025 | 157.162 | 160.34 |
| 331480 G | 177.8 | 247.65 | 192.088 | 192.088 |
| BT4-0027 | 198.438 | 284.162 | 225.425 | 225.425 |
| BT4-0013 | 206.375 | 282.575 | 190.5 | 190.5 |
| BT4-0021 G/HA1 | 206.375 | 282.575 | 190.5 | 190.5 |
| BT4-0035 E8/C355 | 220 | 295 | 315 | 315 |
| BT4-0040 E8/C355 | 220.662 | 314.325 | 239.712 | 239.712 |
| BT4-0020/HA1 | 240 | 338 | 248 | 248 |
| 330782 AG | 241.478 | 349.148 | 228.6 | 228.6 |
| 330862 B | 244.475 | 327.025 | 193.675 | 193.675 |
| BT4-0039 E8/C355 | 254 | 358.775 | 269.875 | 269.875 |
| BT4-0044 E8/C560 | 266.7 | 355.6 | 230.188 | 228.6 |
| BT4B 331168 B | 269.875 | 381 | 282.575 | 282.575 |
| BT4-0012 | 276.225 | 393.7 | 269.875 | 269.875 |
| BT4-0049 E81/C510 | 279.4 | 393.7 | 269.88 | 269.88 |
| BT4-0048 E8/C475 | 279.578 | 380.898 | 244.48 | 250 |
| BT4-0026 A/PEX | 280 | 406.4 | 298.45 | 298.45 |
| BT4-0015 | 285.75 | 380.898 | 244.475 | 244.475 |
| BT4-0047 E8/C475 | 285.75 | 380.898 | 244.48 | 250 |
| BT4B 331452 G/HA1 | 288.925 | 406.4 | 298.45 | 292.45 |
| BT4B 331968 BG/HA1 | 292.1 | 422.275 | 269.875 | 269.875 |
| 331492 | 304.648 | 438.048 | 280.99 | 279.4 |
| BT4B 328909 | 304.8 | 501.65 | 336.55 | 336.55 |
| 330758 BG | 304.902 | 412.648 | 266.7 | 266.7 |
| BT4-0004 G/HA1 | 304.902 | 412.648 | 266.7 | 266.7 |
| BT4-8093 | 310 | 430 | 310 | 310 |
| BT4-8182 E8/C675 | 317.5 | 422.275 | 269.875 | 269.875 |
| BT4B 331161 BG/HA1 | 317.5 | 447.675 | 327.025 | 327.025 |
| BT4B 332647 G/HA1 | 330.2 | 444.5 | 301.625 | 301.625 |
| BT4-8113 E2/C500 | 330.302 | 438.023 | 247.65 | 254 |
| 331381 | 333.375 | 469.9 | 342.9 | 342.9 |
| BT4-8160 E8/C475 | 343.052 | 457.098 | 254 | 254 |
| BT4B 328817 | 343.052 | 457.098 | 254 | 254 |
| BT4B 331228 | 346.075 | 488.95 | 358.775 | 358.775 |
| BT4-8070 | 347.662 | 469.9 | 292.1 | 292.1 |
| 331092 A | 347.663 | 469.9 | 292.1 | 292.1 |
| 331271 | 355.6 | 488.95 | 317.5 | 317.5 |
| BT4-8162 | 355.6 | 482.6 | 265.113 | 269.875 |
| BT4B 328870 | 355.6 | 482.6 | 265.113 | 269.875 |
| BT4B 328912 | 355.6 | 488.95 | 317.5 | 317.5 |
| 332059 | 360 | 510 | 380 | 380 |
| 331159 A | 368.3 | 523.875 | 382.588 | 382.588 |
| BT4-8033 G/HA1 | 380 | 560 | 390 | 360 |
| BT4-8086 G/HA1 | 380 | 540 | 300 | 300 |
| 331149 E/C675 | 384.175 | 546.1 | 400.05 | 400.05 |
| BT4-8025 | 384.175 | 546.1 | 400.05 | 400.05 |
| BT4B 334128/HA1 | 384.175 | 546.1 | 400.05 | 400.05 |
| BT4B 334042 | 385.762 | 514.35 | 317.5 | 317.5 |
| BT4B 332824/HA1 | 395 | 545 | 268 | 288.9 |
| BT4-8147 G/HA1 | 400 | 600 | 308 | 308 |
