Double row angular contact ball bearings, with seals or shields, correspond to a pair of single row angular contact ball bearings in a back-to-back arrangement, while requiring less axial space. Depending on the sealing execution, they can operate at high speeds and are more suitable than deep groove ball bearings for supporting large axial forces in both directions.
| SKF performance class |
SKF Explorer
|
| d |
20 mm
|
Bore diameter |
|---|---|---|
| D |
52 mm
|
Outside diameter |
| B |
22.2 mm
|
Width |
| d2 |
≈ 29.9 mm
|
Recess diameter inner ring shoulder |
| D2 |
≈ 43.95 mm
|
Recess diameter outer ring shoulder |
| r1,2 |
min. 1.1 mm
|
Chamfer dimension inner ring |
| a |
30 mm
|
Distance pressure point(s) |
| da |
min. 27 mm
|
Abutment diameter shaft |
|---|---|---|
| da |
max. 29.5 mm
|
Abutment diameter shaft |
| Da |
max. 45 mm
|
Abutment diameter housing |
| ra |
max. 1 mm
|
Fillet radius |
| Basic dynamic load rating | C |
24.5 kN
|
|---|---|---|
| Basic static load rating | C0 |
15.6 kN
|
| Fatigue load limit | Pu |
0.67 kN
|
| Reference speed |
13 000 r/min
|
|
| Limiting speed |
13 000 r/min
|
|
| Calculation factor | kr |
0.07
|
| Limiting value | e |
0.8
|
| Calculation factor | X |
0.63
|
| Calculation factor | Y0 |
0.66
|
| Calculation factor | Y1 |
0.78
|
| Calculation factor | Y2 |
1.24
|
| Mass bearing |
0.22 kg
|
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