Single 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.
| SKF performance class |
SKF Explorer
|
| d |
140 mm
|
Bore diameter |
|---|---|---|
| D |
300 mm
|
Outside diameter |
| B |
62 mm
|
Width |
| d1 |
≈ 195 mm
|
Shoulder diameter of inner ring |
| D1 |
≈ 251.7 mm
|
Shoulder diameter of outer ring |
| D3 |
290 mm
|
Diameter of snap ring groove |
| F |
180 mm
|
Raceway diameter of inner ring |
| C2 |
8 mm
|
Distance from outer ring side face to snap ring groove |
| b |
5.5 mm
|
Width of snap ring groove |
| r1,2 |
min. 4 mm
|
Chamfer dimension |
| r3,4 |
min. 4 mm
|
Chamfer dimension |
| s |
max. 3.7 mm
|
Permissible axial displacement |
| da |
min. 157 mm
|
Diameter of spacer sleeve |
|---|---|---|
| da |
max. 175 mm
|
Diameter of spacer sleeve |
| db |
min. 199 mm
|
Diameter of shaft abutment |
| Da |
max. 282.5 mm
|
Diameter of housing abutment |
| ra |
max. 3 mm
|
Radius of fillet |
| rb |
max. 3 mm
|
Radius of fillet |
| Basic dynamic load rating | C |
780 kN
|
|---|---|---|
| Basic static load rating | C0 |
830 kN
|
| Fatigue load limit | Pu |
88 kN
|
| Reference speed |
2 400 r/min
|
|
| Limiting speed |
4 300 r/min
|
|
| Minimum load factor | kr |
0.23
|
| Limiting value | e |
0.2
|
| Calculation factor | Y |
0.6
|
| Mass |
22.4 kg
|
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