Part Number | 30307/DF |
System of Measurement | Metric |
Type | Bearing |
Bearing Type | Roller |
Roller Bearing Type | Tapered |
For Load Direction | Combined |
Construction | Matched |
Seal Type | Open |
Cups Type | Standard |
Bore Dia | 35 mm |
Bore Dia Tolerance | -0.012mm to 0 |
Outer Dia | 80 mm |
Outer Dia Tolerance | -0.016mm to 0 |
Total Width | 45.5 mm |
Total Width Tolerance | +0.2mm to 0 |
Width Of Inner Rings | 42 mm |
Width Of Inner Rings Tolerance | -0.1mm to 0 |
Width Of Lubrication Groove | 5 mm |
Diameter Of Lubrication Hole | 3 mm |
Chamfer Dimension Inner Ring | min.0.6 mm |
Chamfer Dimension Outer Ring | min.1.5 mm |
Ring Material | Chrome Steel |
Roller Material | Chrome Steel |
Cage Material | Steel |
Abutment Diameter Shaft | 46 mm |
Abutment Diameter Housing | 46 mm |
Fillet Radius | max.2 mm |
Reference Speed | 6000 r/min |
Limiting Speed | 9000 r/min |
Dynamic Radial Load | 34200 lbf |
Static Radial Load | 33750 lbf |
Fatigue Load Limit | 3735 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 | 2.34 lb |

30307/DF
Design Features of 30307/DF Bearing
30307/DF features pairs of tapered rollers arranged to provide optimized load distribution, enhancing performance in both radial and axial directions. 30307/DF outer dia is 80 mm. Its bore dia is 35 mm. Its design allows for precise adjustment of internal clearance and preload, ensuring improved stability and reliability in high-load applications.
What Benefits Can 30307/DF Bearing Provide?
- Enhanced Load Capacity: Their design allows for improved distribution of loads, enabling them to handle higher radial and axial forces effectively.
- Improved Stability: The precise matching of the bearings ensures consistent performance and stability under varying loads and operating conditions.
- Adjustable Internal Clearance: Users can customize the internal clearance and preload to suit specific application requirements, optimizing performance.
- Reduced Friction: The tapered roller design minimizes friction between moving parts, leading to smoother operation and extended service life.
- Versatile Applications: Suitable for a wide range of applications, from automotive to industrial machinery, due to their adaptability to different load and speed conditions.
What Can 30307/DF Bearing Be Used for?
- Automotive: Utilized in wheel hubs, differentials, and transmission systems to support heavy loads and provide accurate alignment.
- Industrial Machinery: Found in gearboxes, conveyors, and pumps, where they manage both radial and axial loads effectively.
- Aerospace: Employed in aircraft landing gear and other critical components that require high reliability and performance under heavy loads.
- Heavy Equipment: Used in construction and mining machinery to ensure stability and support in harsh operating conditions.
- Railway: Applied in train axle boxes to handle the substantial loads and forces experienced during operation.