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BWK four-row tapered roller bearings are designed for work rolls and backup rolls operating under heavy radial loads, axial loads and impact conditions. The four-row arrangement provides high load capacity in a compact mounting space and supports stable roll positioning.
BT4 and BT4B series bearings are available in different internal designs, clearances and lubrication arrangements. Final selection should be confirmed according to the existing bearing number, dimensions, drawing and operating conditions.
High radial and axial load capacity
Suitable for heavy shock loads in rolling mills
Compact four-row arrangement
Stable roll support and running accuracy
Multiple sizes and customized designs available
Models & Dimensions
| Model | Bore d (mm) | Outside Diameter D (mm) | Total Width T (mm) | Outer Ring Width C (mm) | Dynamic Load C (kN) | Static Load C0 (kN) |
|---|---|---|---|---|---|---|
| BT4-0040 E8/C355 | 220.662 | 314.325 | 239.712 | 239.712 | 2120 | 4000 |
| BT4-0035 E8/C355 | 220 | 295 | 315 | 315 | 1860 | 4050 |
| BT4-0039 E8/C355 | 254 | 358.775 | 269.875 | 269.875 | 3050 | 5700 |
| BT4-0044 E8/C560 | 266.7 | 355.6 | 230.188 | 228.6 | 2320 | 4650 |
| BT4-0049 E81/C510 | 279.4 | 393.7 | 269.88 | 269.88 | 3400 | 5850 |
| BT4-0048 E8/C475 | 279.578 | 380.898 | 244.48 | 250 | 2450 | 4800 |
| BT4-0015 G/HA1C400VA903 | 285.75 | 380.898 | 244.475 | 244.475 | 2200 | 5500 |
| BT4-0047 E8/C475 | 285.75 | 380.898 | 244.48 | 250 | 2450 | 4800 |
| BT4B 331452 G/HA1 | 288.925 | 406.4 | 298.45 | 292.45 | 3580 | 9000 |
| BT4-0004 G/HA1 | 304.902 | 412.648 | 266.7 | 266.7 | 3405 | 7500 |
| BT4-8093 G/HA1VA901 | 310 | 430 | 310 | 310 | 2860 | 6550 |
| BT4-8182 E9/C675 | 317.5 | 422.275 | 269.875 | 269.875 | 3924 | 7800 |
| BT4B 332647 G/HA1 | 330.2 | 444.5 | 301.625 | 301.625 | 3690 | 9650 |
| BT4-8113 E2/C500 | 330.302 | 438.023 | 247.65 | 254 | 3625 | 6400 |
| BT4-8160 E9/C475 | 343.052 | 457.098 | 254 | 254 | 3600 | 7100 |
| BT4-8070 G/HA1VA901 | 347.662 | 469.9 | 292.1 | 292.1 | 3910 | 8500 |
![]() | Dimensions and load ratings are reference data. Final specifications should be confirmed against the required bearing designation, drawing and operating conditions before quotation. |
Hot rolling mills
Cold rolling mills
Plate and strip mills
Bar and wire rod mills
Work rolls, intermediate rolls and backup rolls
For accurate selection, please provide the bearing model, d × D × B/T dimensions, drawing, roll speed, load conditions, lubrication method, required clearance and precision grade. Dimensions and load ratings shown are reference data and should be confirmed before quotation.
BWK provides reliable bearing solutions for industrial and agricultural applications, supported by stable supply, strict quality control and flexible OEM & ODM services.
