Part Number | 331148 A |
System of Measurement | Metric |
Type | Bearing |
Bearing Type | Roller |
Roller Bearing Type | Tapered |
For Load Direction | Combined |
Construction | Four-Row |
Seal Type | Open |
Bore Dia | 584.2 mm |
Bore Dia Tolerance | -0.05mm to 0 |
Outer Dia | 762 mm |
Outer Dia Tolerance | -0.075mm to 0 |
Total Bearing Width Over Inner Rings | 396.875 mm |
Total Bearing Width Over Inner Rings Tolerance | -0.25mm to 0 |
Total Bearing Width Over Outer Rings | 401.638 mm |
Total Bearing Width Over Outer Rings Tolerance | +0.4mm to -0.4mm |
Abutment Diameter Shaft | 620 mm |
Abutment Diameter Housing | 620 mm |
Chamfer Dimension Inner Ring | min.3.3 mm |
Ring Material | Chrome Steel |
Roller Material | Chrome Steel |
Cage Material | Steel |
Dynamic Radial Load | 1721250 lbf |
Static Radial Load | 5040000 lbf |
Fatigue Load Limit | 351000 lbf |
Comparative Radial Load Rating | 459000 lbf |
Comparative Axial Load Rating | 106200 lbf |
Lubrication | Required |
Temperature Range | -30° to 110 °C |
ABEC Rating | ABEC-1 |
Radial Clearance | Standard (Available in C3/C4/C5) |
RoHS | Compliant |
REACH | Compliant |
Weight | 1069.24 lb |

331148 A
Design Features of 331148 A Bearing
331148 A is designed to handle heavy radial and axial loads simultaneously, making it ideal for high-load applications. 331148 A outer dia is 762 mm. Its bore dia is 584.2 mm. Its structure allows for excellent load distribution and increased rigidity, ensuring reliable performance in demanding environments such as rolling mills.
What Benefits Can 331148 A Bearing Provide?
- High Load Capacity: It can support heavy radial and axial loads, making it suitable for demanding applications such as heavy machinery and rolling mills.
- Improved Durability: Its robust design ensures even load distribution, reducing wear and extending the bearing’s service life.
- Enhanced Rigidity: The four-row configuration increases the overall rigidity of the bearing, improving stability in high-load environments.
- Efficient Operation: It reduces friction and heat generation, allowing for smoother operation and improved energy efficiency in large industrial machines.
What Can 331148 A Bearing Be Used for?
- Rolling Mills: Essential for supporting large radial and axial loads in steel, aluminum, and other metal rolling operations.
- Heavy Machinery: Used in construction and mining equipment where high load-bearing capacity and durability are required.
- Gearboxes: Provides reliable support in high-torque, heavy-load systems.
- Railway Axles: Ensures smooth and stable operation under heavy loads in rail transport.
- Wind Turbines: Applied in turbine rotor shafts for high load capacity and long-lasting performance.