Self-aligning ball bearings have two rows of balls, a common sphered raceway in the outer ring and two deep uninterrupted raceway grooves in the inner ring.
| d |
20 mm
|
Bore diameter |
|---|---|---|
| D |
52 mm
|
Outside diameter |
| B |
21 mm
|
Width |
| d1 |
≈29.15 mm
|
Shoulder diameter inner ring |
| D1 |
≈41.9 mm
|
Shoulder diameter outer ring |
| r1,2 |
min.1.1 mm
|
Chamfer dimension |
| Basic dynamic load rating | C |
18.2 kN
|
|---|---|---|
| Basic static load rating | C0 |
4.75 kN
|
| Fatigue load limit | Pu |
0.24 kN
|
| Reference speed |
26 000 r/min
|
|
| Limiting speed |
19 000 r/min
|
|
| Permissible angular misalignment | α |
3 °
|
| Calculation factor | kr |
0.05
|
| Limiting value | e |
0.52
|
| Calculation factor | Y0 |
1.3
|
| Calculation factor | Y1 |
1.2
|
| Calculation factor | Y2 |
1.9
|
| Retaining feature, inner ring | None |
| Locating feature, bearing outer ring | None |
| Number of rows | 2 |
| Bore type | Cylindrical |
| Cage | Non-metallic |
| Radial internal clearance | CN |
| Tolerance class | Normal |
| Material, bearing | Bearing steel |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication feature | Without |
(20X52X21) (2304TN9) (2304-TN9)
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