Part Number | 331780 A |
System of Measurement | Metric |
Type | Bearing |
Bearing Type | Roller |
Roller Bearing Type | Tapered |
For Load Direction | Combined |
Construction | Double Row |
Seal Type | Open |
Cups Type | Standard |
Bore Dia | 762 mm |
Bore Dia Tolerance | -0.08mm to 0 |
Outer Dia | 965.2 mm |
Outer Dia Tolerance | -0.01mm to 0 |
Double Cone Width | 187.325 mm |
Double Cone Width Tolerance | -0.3mm to 0 |
Bearing Width | 187.325 mm |
Bearing Width Tolerance | +0.4mm to -0.4mm |
Abutment Diameter Shaft | 853 mm |
Abutment Diameter Housing | 853 mm |
Chamfer Dimension Inner Ring | min.6.4 mm |
Chamfer Dimension Outer Ring | min.1.5 mm |
Dynamic Radial Load | 805500 lbf |
Static Radial Load | 2205000 lbf |
Ring Material | Chrome Steel |
Roller Material | Chrome Steel |
Fatigue Load Limit | 150750 lbf |
Comparative Radial Load Rating | 194625 lbf |
Comparative Axial Load Rating | 76050 lbf |
Distance Pressure Point | 316 mm |
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 | 639.34 lb |

331780 A
Design Features of 331780 A Bearing
331780 A bearing features a double-row design that provides high load capacity, stability, and precise alignment. 331780 A outer dia is 965.2 mm. Its bore dia is 762 mm. It is durable, with options for sealing and lubrication, making it ideal for heavy-duty applications.
What Benefits Can 331780 A Bearing Provide?
- High Load Support : It handles heavy loads in both directions, perfect for tough jobs.
- Stability: The double-row design keeps it steady under pressure.
- Longer Life: With sealing and lubrication options, it lasts longer and requires less maintenance.
- Precision Alignment: It self-aligns to reduce wear and improve performance.
- Reduced Noise: Runs quietly, making it ideal for sensitive equipment.
What Can 331780 A Bearing Be Used for?
- Heavy Machinery: Ideal for supporting high loads and heavy-duty operations.
- Automotive Applications: Commonly used in wheel hubs, axles, and transmissions.
- Gearboxes: Provides stability and load handling in industrial gear systems.
- Mining Equipment: Suitable for rugged conditions due to its durability and load capacity.
- Conveyor Systems: Helps in handling continuous load in transport machinery.