NJ 2209 ECNJ
Single row cylindrical roller bearing, NJ design, with snap ring grooveSingle row cylindrical roller bearings are designed to accommodate high radial loads in combination with high speeds. Having two integral flanges on the outer ring and one on the inner ring, NJ design bearings can accommodate axial displacement in one direction. An annular groove in the outer ring enables the bearings to retain a snap ring. An important feature is the separable design, which facilitates mounting and enables the bearing components to be interchanged.
- High radial load carrying capacity
- Low friction
- Long service life
- Locate the shaft axially in one direction
- Separable design
Description
| SKF performance class | SKF Explorer |
Dimensions
| d | 45 mm | Bore diameter |
|---|---|---|
| D | 85 mm | Outside diameter |
| B | 23 mm | Width |
| d1 | ≈ 59 mm | Shoulder diameter of inner ring |
| D1 | ≈ 72.4 mm | Shoulder diameter of outer ring |
| D3 | 81.81 mm | Diameter of snap ring groove |
| F | 54.5 mm | Raceway diameter of inner ring |
| C2 | 3.28 mm | Distance from outer ring side face to snap ring groove |
| b | 1.9 mm | Width of snap ring groove |
| r1,2 | min. 1.1 mm | Chamfer dimension |
| r3,4 | min. 1.1 mm | Chamfer dimension |
| s | max. 1.7 mm | Permissible axial displacement |
Abutment dimensions
| da | min. 52 mm | Diameter of spacer sleeve |
|---|---|---|
| da | max. 53 mm | Diameter of spacer sleeve |
| db | min. 61 mm | Diameter of shaft abutment |
| Da | max. 77.6 mm | Diameter of housing abutment |
| ra | max. 1 mm | Radius of fillet |
| rb | max. 1 mm | Radius of fillet |
Calculation data
| Basic dynamic load rating | C | 85 kN |
|---|---|---|
| Basic static load rating | C0 | 81.5 kN |
| Fatigue load limit | Pu | 10.6 kN |
| Reference speed | 9 000 r/min | |
| Limiting speed | 9 500 r/min | |
| Minimum load factor | kr | 0.2 |
| Limiting value | e | 0.3 |
| Calculation factor | Y | 0.4 |
Mass
| Mass | 0.55 kg |
Tolerances and clearances
Bearing interfaces
