Part Number | NNU 4960 BK/SPW33 |
Brand: BearingMaker | Interchangeable With: SKF |
System of Measurement | Metric |
Roller Bearing Type | Cylindrical |
Bore Type | Taper 1:12 |
For Load Direction | Combined |
Construction | Double Row |
Seal Type | Open |
Bore Dia | 300 mm |
Bore Dia Tolerance | 0 to +0.035mm |
Outer Dia | 420 mm |
Outer Dia Tolerance | -0.023mm to 0 |
Width | 118 mm |
Width Tolerance | -0.35mm to 0 |
Shoulder Dia Outer Ring | 379 mm |
Raceway Diameter Inner Ring | 339 mm |
Width Annular Lubrication Groove Outer Ring(B1) | 16.7 mm |
Diameter Lubrication Hole (outer Ring) (K) | 3 mm |
Chamfer Dimension Outer Ring(r1,2)(min.) | 3 mm |
Chamfer Dimension Inner Ring(r3,4)(min.) | 1.1 mm |
Permissible Axial Displacement(max.) | 5.5 mm |
Ring Material | Chrome Steel |
Roller Material | Chrome Steel |
Dynamic Radial Load | 229500 lbf |
Static Radial Load | 531000 lbf |
Max Speed (X1000 rpm) | 2 |
Lubrication | Grease, Oil |
Temperature Range | -30° to 110 °C |
RoHS | Compliant |
REACH | Compliant |
Weight | 50 kg |

NNU 4960 BK/SPW33
Design Features of NNU 4960 BK/SPW33 Bearing
NNU 4960 BK/SPW33 Bearing is designed to handle higher radial loads and maintain superior rigidity. NNU 4960 BK/SPW33 outer dia is 420 mm. Its bore dia is 300 mm. It features a compact design with excellent speed capabilities, making it suitable for demanding precision applications.
What Benefits Can NNU 4960 BK/SPW33 Bearing Provide?
- High Radial Load Capacity: It can accommodate greater loads compared to single-row designs.
- Superior Rigidity: The double-row configuration ensures enhanced stiffness for precise operation.
- Compact Design: Its space-saving structure is ideal for applications requiring both high performance and reduced dimensions.
- High-Speed Performance: Low friction and optimized design support efficient operation at elevated speeds.
- Durability: Engineered for long service life with proper lubrication and maintenance.
What Can NNU 4960 BK/SPW33 Bearing Be Used for?
- Machine Tool Spindles: Delivering high stiffness and precision for machining accuracy.
- Robotics: Supporting precise movements and high loads in compact spaces.
- Textile Machinery: Ensuring reliable performance at high speeds and loads.
- Printing Presses: Providing stability and durability in high-speed operations.
- Aerospace Systems: Handling demanding conditions with exceptional accuracy and reliability.