Four-Row Tapered Roller Bearings
AMIGO Four-Row Tapered Roller Bearings can handle combined (radial and axial) loads at low to moderate speeds and are primarily used in work roll applications like rolling mills.
- Long service life
The four-cup design ensures optimal load distribution across all four rows of rollers. - Enhanced reliability
Optimized surface finishes support hydrodynamic lubricant film formation. - Wear resistance
AMIGO Explorer bearings use clean, homogenous steel and special heat treatment for improved wear resistance. - Improved sealing
The seal design offers high contamination protection, reduces friction, and improves lubricant retention, minimizing maintenance costs. - Interchangeability
Identical external dimensions allow easy swapping between sealed, open, or optimized bearings. - Easy maintenance
Designs without intermediate rings simplify mounting, dismounting, and inspection. - Space-saving
Short roll necks eliminate the need for separate axial bearings, reducing costs. - Simplified axial location
Tighter inner ring tolerances make surrounding components easier to dimension.
AMIGO Four-row tapered roller bearings are widely used in various industries. Their availability matches their versatility across numerous applications in a wide range of designs, variants, and sizes. Examples of applications include:
- Steel and Metal Processing (Rolling Mills)
- Mining and Quarrying
- Gear Drives and Power Transmission
- Pulp and Paper Industry
- Heavy Machinery Manufacturing
- Automotive and Railways
- Construction Equipment
- Marine and Offshore Operations
Four-Row Tapered Roller Bearings - Designs and Variants
TQO Design Bearings
TQO design bearings are available in a face-to-face arrangement. These bearings can be open or sealed, with a cylindrical or tapered bore. They come with or without inner ring extensions on both sides and may include a helical groove in the bore. They are available in both basic designs and SKF Explorer variants.
TQI Design Bearings
TQI design bearings are designed for a back-to-back arrangement. They are available with cylindrical or tapered bores, and with or without inner ring extensions on one side. Like TQO bearings, they are available in both standard designs and SKF Explorer options.
Four-Row Tapered Roller Bearings Size Chart
| Designation | d [mm] | D [mm] | B [mm] | T [mm] |
|---|---|---|---|---|
| BT4B 331009 BG/HA1 | 585.786 | 771.5225 | 479.423 | 479.423 |
| BT4B 331300 E/C775 | 593.312 | 844.55 | 619.95 | 619.95 |
| 331562 | 603.25 | 937.25 | 622.3 | 622.3 |
| BT4B 531625 E/C800 | 603.25 | 937.25 | 622.3 | 622.3 |
| 331175 A | 609.9 | 787.4 | 301.95 | 301.95 |
| 331295 | 609.9 | 879.15 | 479.423 | 479.423 |
| BT4B 328817 G/HA1VA901 | 609.9 | 787.4 | 301.95 | 301.95 |
| BT4B 328510/HA1 | 620 | 800 | 363.3 | 363.3 |
| BT4B 8031 E/C800 | 625 | 915 | 480 | 480 |
| BT4B 8137 G/HA1 | 625 | 1070 | 648.002 | 648.002 |
| BT4B 332827 AG/HA1 | 650 | 1030.5 | 500 | 500 |
| BT4B 332833 G/HA1 | 650 | 1070 | 646.002 | 646.002 |
| 331190 | 600.4 | 812.8 | 305.125 | 305.125 |
| BT4B 331190 BG/HA1 | 600.4 | 812.8 | 305.125 | 305.125 |
| BT4B 332906/HA1 | 670 | 910 | 620 | 620 |
| BT4B 343015 BG/HA1VA901 | 679.45 | 901.7 | 532.45 | 532.45 |
| BT4B 343015 AG/HA1VA901 | 679.45 | 901.7 | 532.45 | 532.45 |
| BT4B 328949/HA1 | 680 | 800 | 700 | 700 |
| BT4B 328895 ABG/HA1VA902 | 685.8 | 879.15 | 332.425 | 332.425 |
| BT4B 328098 G/HA1 | 708.025 | 930.275 | 505.15 | 505.15 |
| BT4B 8109 E/C800 | 708.025 | 930.275 | 505.15 | 505.15 |
| BT4B 331551 BG/HA1VA901 | 710 | 900 | 410 | 410 |
| BT4B 331551 E/C775 | 710 | 900 | 410 | 410 |
| BT4B 8139 G/HA1 | 711.2 | 914.4 | 390 | 390 |
| 331554 A | 730.25 | 1035.05 | 735.05 | 735.05 |
| BT4B 328049/HA1VA901 | 717.55 | 944.15 | 505.15 | 505.15 |
| 330803 A | 730.25 | 1035.05 | 735.05 | 735.05 |
Recommended Reading
Frequently Asked Questions (FAQs)
Q: What are the benefits of Four-row tapered roller bearings compared to other bearing types?
A: These bearings offer enhanced load distribution over all four rows of rollers, increased axial stiffness, low friction, and longer service life, making them ideal for high-load and demanding conditions.
Q: What types of loads can Four-row tapered roller bearings handle?
A: They can handle heavy radial loads along with axial loads in both directions, making them versatile for various industrial applications.
Q: Can Four-row tapered roller bearings be used in high-speed applications?
A: Yes, while they are primarily designed for heavy loads, their optimized design also supports applications that require moderate to high-speed operation.
Q: What materials are used in Four-row tapered roller bearings?
A: These bearings are typically made from high-grade steel, offering resistance to wear and extending the overall bearing life.
Q: How does the sealing system in Four-row tapered roller bearings enhance performance?
A: The advanced sealing design helps retain lubrication and keeps contaminants out, reducing frictional heat and ensuring reliable performance.
Q: What industries typically use Four-row tapered roller bearings?
A: They are widely used in heavy machinery, mining, steel rolling mills, and other industries that involve large, demanding loads and severe operating conditions.
Q: Can Four-row tapered roller bearings be customized for specific applications?
A: Yes, these bearings can be customized in terms of design, size, and material, to suit specific industrial needs and applications.
Q: What maintenance practices are required for Four-row tapered roller bearings?
A: Regular lubrication and inspection are necessary to ensure optimal performance and extend the service life of the bearings.
Q: How can I obtain Four-row tapered roller bearings?
A: You can request a quote through specialized bearing suppliers or manufacturers that offer various configurations of Four-row tapered roller bearings.