Four Row Tapered Roller Bearings represent the highest load capacity design in the tapered roller bearing family, engineered for extreme heavy-duty applications with severe shock loads, high temperatures, and continuous 24/7 operation.
The multi-row integrated structure distributes load across four rows of tapered rollers, significantly increasing radial and axial load capacity compared to single-row and double-row designs. Optional high-strength alloy steel and advanced heat-treated materials ensure stable performance under extreme industrial conditions.
Structural Features
- Four-row tapered roller configuration with integrated high-rigidity housing design
- Superior load distribution for extreme radial, axial, and impact loads
- High resistance to fatigue, misalignment, and vibration
- Optional high-temperature lubrication and reinforced sealing systems
- Large diameter and custom-size manufacturing capability
Applications
- Steel rolling mills (work rolls and backup rolls)
- Heavy-duty mining and crushing equipment
- Large-scale rotary kiln support systems
- Port cranes and heavy lifting equipment
- Extreme-load industrial transmission systems
Product Specifications
| Inquiry | Bearing No. | ID | OD | T | Cr | Cor | Mass |
|---|---|---|---|---|---|---|---|
| 352936X2/DF-1 | 180 | 250 | 207 | 870 | 2100 | 28.4 | |
| 382936X3 | 180 | 260 | 200 | 1110 | 2700 | 33.2 | |
| 380636 | 180 | 280 | 180 | 920 | 2540 | 39.6 | |
| 382040X2-1 | 200 | 310 | 200 | 2170 | 1520 | 55.6 | |
| 382040 | 200 | 310 | 275 | 1350 | 4200 | 75.1 | |
| 380641 | 205 | 320 | 205 | 1160 | 2850 | 55.4 | |
| 380644-XRS/HC | 220 | 295 | 315 | 1270 | 3780 | 56.6 | |
| 380644 | 220 | 320 | 200 | 1730 | 4000 | 55 | |
| 382044 | 220 | 340 | 305 | 2800 | 5950 | 99.5 | |
| 382044/HC | 220 | 340 | 305 | 2800 | 5950 | 99.5 | |
| 382948X2-XRS/HC | 240 | 320 | 294 | 1550 | 5000 | 61.6 | |
| 380648/HCC9 | 240 | 338 | 248 | 2030 | 5400 | 69 | |
| 380648-XRS/HC | 240 | 338 | 340 | 1900 | 5160 | 78.8 | |
| 382048X2 | 240 | 360 | 310 | 3630 | 2210 | 90.5 | |
| 380650-1 | 250 | 385 | 255 | 2310 | 5350 | 107 | |
| 380650/HC | 250 | 460 | 270 | 2470 | 6400 | 192 | |
| 382952/HC | 260 | 360 | 265 | 1900 | 5050 | 77.8 | |
| 380652/HC | 260 | 400 | 255 | 1630 | 4950 | 117 | |
| 380652/HC-1 | 260 | 400 | 255 | 2250 | 4800 | 117 | |
| 380652/HG2 | 260 | 400 | 255 | 2100 | 4900 | 117 |