| Bearing number |
638-RZ |
| Size (mm) |
8x28x6 |
| Bore Diameter (mm) |
8 |
| Outer Diameter (mm) |
28 |
| Width (mm) |
6 |
| d |
8 mm |
| D |
28 mm |
| B |
6 mm |
| C |
6 mm |
| d1 |
14,8 mm |
| d2 |
– mm |
| r1 min. |
10,4 mm |
| r2 min. |
10,4 mm |
| D1 |
22,6 mm |
| D2 |
0,3 mm |
| da min. |
10.4 mm |
| Da max. |
25.6 mm |
| ra max. |
0.3 mm |
| Weight |
0,03 Kg |
| Basic dynamic load rating (C) |
1,33 kN |
| Basic static load rating (C0) |
0,57 kN |
| Fatigue load limit (Pu) |
0,024 |
| Reference speed |
60000 r/min |
| Limiting speed |
30000 r/min |
| Calculation factor (f0) |
12 |
| d1 ≈ |
14.8 mm |
| D2 ≈ |
22.6 mm |
| r1,2 min. |
0.3 mm |
| da max. |
14.7 mm |
| Basic dynamic load rating C |
1.33 kN |
| Basic static load rating C0 |
0.57 kN |
| Fatigue load limit Pu |
0.024 kN |
| Calculation factor kr |
0.03 |
| Calculation factor f0 |
12 |
| Mass bearing |
0.03 kg |