Part Number | 331138 AG |
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 | 139.7 mm |
Bore Dia Tolerance | -0.025mm to 0 |
Outer Dia | 200.025 mm |
Outer Dia Tolerance | -0.03mm to 0 |
Total Bearing Width Over Inner Rings | 157.162 mm |
Total Bearing Width Over Inner Rings Tolerance | -0.2mm to 0 |
Total Bearing Width Over Outer Rings | 160.34 mm |
Total Bearing Width Over Outer Rings Tolerance | +0.35mm to -0.25mm |
Abutment Diameter Shaft | 156 mm |
Abutment Diameter Housing | 156 mm |
Chamfer Dimension Inner Ring | min.0.8 mm |
Ring Material | Chrome Steel |
Roller Material | Chrome Steel |
Cage Material | Steel |
Dynamic Radial Load | 193050 lbf |
Static Radial Load | 468000 lbf |
Fatigue Load Limit | 45900 lbf |
Comparative Radial Load Rating | 56250 lbf |
Comparative Axial Load Rating | 9315 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 | 34.17 lb |

331138 AG
Design Features of 331138 AG Bearing
331138 AG is designed to handle heavy radial and axial loads simultaneously, making it ideal for high-load applications. 331138 AG outer dia is 200.025 mm. Its bore dia is 139.7 mm. Its structure allows for excellent load distribution and increased rigidity, ensuring reliable performance in demanding environments such as rolling mills.
What Benefits Can 331138 AG 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 331138 AG 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.