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四列圆锥滚子轴承：
38000型：此种轴承采用两个双滚道内圈，一个双滚道外圈和两个单滚道外圈，内圈、外圈之间均有用于调整游隙的隔圈，可以承受较大的径向载荷和轴向载荷。但极限转速低，主要用于重型机械，如轧钢机。
主要型号及规格尺寸
| 四列圆锥滚子轴承(7类) | ||||||
| 轴承型号 | 外形尺寸(mm) | 单重 | ||||
| 新代号 | 旧代号 | d | D | B | C | (Kg) |
| 382936 | 2077936/HC | 180 | 260 | 185 | 26.4 | |
| 2077936 | 180 | 260 | 185 | 26.4 | ||
| 2-352936X2 | 180 | 250 | 207 | 28.88 | ||
| 382938 | 2077936X1 | 180 | 260 | 185 | 31.6 | |
| 2-2097938/WT | 190 | 260 | 190 | 34 | ||
| 331486 (SKF) | NSK:206KV2854 | 206.375 | 282.275 | 190.5 | 37.5 | |
| 3806/216.103 | 216.103 | 330.2 | 269.875 | 80.5 | ||
| 802018 (FAG) | 220.662 | 314.325 | 239.712 | 64.2 | ||
| 330782A（SKF） | 241.478 | 349.148 | 228.6 | 74.62 | ||
| LM247748DW.710.710D/HC | 244.475 | 327.025 | 193.675 | 45 | ||
| 3806/254-2LS | 254 | 358.775 | 269.875 | 84.75 | ||
| 802252 (FAG) | 254 | 358.775 | 269.875 | 79.6 | ||
| 382952/HC | 2077952/HC | 260 | 360 | 265 | 79.9 | |
| 381052X2 | 260 | 400 | 255 | 115.4 | ||
| 77752/HC | 260 | 400 | 255 | 159 | ||
| M252349DW.310.310DT | 266 | 381 | 282.575 | 102.3 | ||
| LM451349DW.310.310D | 266.7 | 355.6 | 230.188 | 62.4 | ||
| LM451349DW.310.310D/HC | 266.7 | 355.6 | 230.188 | 62.4 | ||
| M252349DW.310.310D | 269.875 | 381 | 282.575 | 102.3 | ||
| M252349DW.310.310D | 269.875 | 381 | 282.575 | 102.3 | ||
| 802009 (FAG) | 279.4 | 393.7 | 269.875 | 103.66 | ||
| LM654644DW.610.610D | 279.578 | 380.898 | 244.475 | 81.3 | ||
| M257248DW.210.210D | 304.902 | 412.648 | 266.7 | 99.4 | ||
| M257248DW.210.210D /HC | 304.902 | 412.648 | 266.7 | 99.4 | ||
| 802045.H122AA(FAG) | 317.5 | 422.275 | 269.875 | 101 | ||
| 3806/330.2-2RS | 330.2 | 444.5 | 301.625 | 132.3 | ||
| 381068/C3 | 340 | 520 | 325 | 244 | ||
| 3806/343.052-2RS | 343.052 | 457.098 | 254 | 108.5 | ||
| 331271-XRS | 355.6 | 488.95 | 317.5 | 165.87 | ||
| DB372972ZX2-1HC | 360 | 480 | 370 | 184 | ||
| 77880 | 400 | 540 | 280 | 175 | ||
| BT4B331333E/L575 | 409.575 | 546.1 | 334.962 | 218.6 | ||
| 1/7016 TMB | 409.575 | 546.1 | 334.962 | 218.6 | ||
| 381188X1-XRS | 440 | 590 | 480 | 364 | ||
| BT4B 332773E/C725 | 450 | 595 | 368 | 275.5 | ||
| 380690 TMB | 450 | 595 | 368 | 275.5 | ||
| 381992X3 | 460 | 610 | 360 | 281.4 | ||
| 332096 (SKF) | 482.6 | 615.95 | 330.2 | 220 | ||
| BT4B334105HA1 | 482.6 | 635 | 421 | 365 | ||
| 330529B | 571.5 | 812.8 | 593.725 | 593.725 | 1007.8 | |
| EE649241D/649310-649311D-XRS | 609.6 | 787.4 | 361.95 | 415.1 | ||
| 3819/625 | 625 | 815 | 480 | 671.6 | ||
| 802147M | TIMKEN:LM281049DW-010-010D | 646.112 | 857.25 | 542.925 | 866.3 | |
| BT4B 331351BG/HA1 | 710 | 900 | 410 | 645.7 | ||