Part Number | NNCF 4948 CV |
Brand: BearingMaker | Interchangeable With: SKF |
System of Measurement | Metric |
Roller Bearing Type | Cylindrical |
For Load Direction | Combined |
Construction | Double Row Full Complement |
Inner Ring Type | With Inner Ring |
Seal Type | Open |
Bore Dia | 240 mm |
Bore Dia Tolerance | -0.03mm to 0 |
Outer Dia | 320 mm |
Outer Dia Tolerance | -0.04mm to 0 |
Width | 80 mm |
Width Tolerance | -0.30mm to 0 |
Shoulder Diameter Inner Ring | 271 mm |
Raceway Diameter Outer Ring | 291 mm |
Width Annular Lubrication Groove Outer Ring | 8 mm |
Diameter Lubrication Hole (Outer Ring) | 4 mm |
Chamfer Dimension r1,2(min.) | 2.1 mm |
Chamfer Dimension r3,4(min.) | 2.1 mm |
Permissible Axial Displacement(max.) | 5 mm |
Ring Material | 52100 Chrome Steel |
Roller Material | 52100 Chrome Steel |
Cage Material | Full complement (no cage) |
Dynamic Radial Load | 175725 lbf |
Static Radial Load | 396000 lbf |
Max Speed (X1000 rpm) | 1 |
Lubrication | Grease, Oil |
Temperature Range | -30° to 110 °C |
RoHS | Compliant |
REACH | Compliant |
Weight | 18.5 kg |

NNCF 4948 CV
Design Features of NNCF 4948 CV Bearing
NNCF 4948 CV Bearing features two rows of cylindrical rollers without a cage, allowing for a maximum number of rollers and significantly enhancing its load-carrying capacity. NNCF 4948 CV outer dia is 320 mm. Its bore dia is 240 mm. This design provides high stability and durability, making it suitable for applications that require robust performance under heavy radial loads.
What Benefits Can NNCF 4948 CV Bearing Provide?
- High Load Capacity: With two rows of rollers, it supports greater radial loads, making it ideal for heavy-duty applications.
- Compact Design: The absence of cages allows for a more compact bearing, suitable for space-constrained environments.
- Enhanced Durability: The increased contact area between the rollers and raceways improves wear resistance and extends the bearing’s service life.
- Cost-Effective Solution: Its simple design and high load capacity can reduce the need for multiple bearings, making it an economical choice.
- Reliable Performance in Harsh Conditions: It performs well in environments with heavy shock loads and vibrations, ensuring reliability in demanding industrial applications.
What Can NNCF 4948 CV Bearing Be Used for?
- Heavy Machinery: Commonly found in construction and mining equipment, where it supports high radial loads and harsh conditions.
- Industrial Gearboxes: Utilized in gearboxes to manage significant loads and ensure efficient power transmission.
- Wind Turbines: Employed in rotor assemblies, where it accommodates heavy loads and varying conditions.
- Steel Mills: Suitable for equipment in steel manufacturing, providing durability and reliability under continuous operation.
- Pulp and Paper Industries: Used in large rollers and presses, offering robust performance in demanding processing environments.