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Category
NJ332
Cylindrical roller bearings are rolling bearings specifically engineered to accommodate high radial loads. Their key rolling elements are cylindrical rollers that make linear contact with the raceways. This design makes them exceptionally effective at handling pure radial forces, serving as critical components in a vast array of industrial applications. Compared to ball bearings of the same size, they offer significantly higher radial load-carrying capacity.
Cylindrical Roller Bearing
| ISO | NJ332 | |
| ГОСТ | 42332 | |
| Bore diameter | d | 160 mm |
| Outside diameter | D | 340 mm |
| Width | B | 68 mm |
| Basic dynamic load rating | C | 514 kN |
| Basic static load rating | C0 | 630 kN |
| Reference speed | 1300 r/min | |
| Limiting speed | 1000 r/min | |
| Weight | 32.9 kg | |
Structure of Cylindrical Roller Bearings
Characteristics of Cylindrical Roller Bearings
- High Radial Load Capacity:The line contact design enables them to handle significantly higher radial loads than same-sized ball bearings.
- High Radial Rigidity:Excellent stiffness in the radial direction, resulting in minimal deformation under load.
- Low Friction:Low rolling resistance contributes to high efficiency.
- High-Speed Capability:Well-designed bearings (especially with lightweight cages) are suitable for high rotational speeds.
- Separability:Many types (e.g., NU, NJ designs) feature separable rings (inner and/or outer), simplifying mounting, dismounting, and maintenance.
- Limited Axial Load Capacity:Generally can only accommodate very small axial loads (depending on rib design), or require combination with other bearings to handle axial forces.
Applications of Cylindrical Roller Bearings
Cylindrical roller bearings are widely used in applications demanding high radial load capacity and rigidity:
- Electric Motors and Generators:Rotor support.
- Gearboxes and Reducers:Gear shaft support.
- Rolling Mills:Work roll and backup roll chocks.
- Pumps and Compressors:Shaft support.
- Vibrating Screens:Handling vibratory loads.
- Construction Machinery:Slewing rings in excavators, cranes.
- Wind Turbines:Main shaft bearings.
- Machine Tool Spindles:Where high rigidity and precision are critical.
- Printing Machinery:Cylinder support.
Premium-quality cylindrical roller bearings ensure mission-critical reliability where maximum radial load capacity is non-negotiable.
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