| Bearing number |
7228DB |
| Size (mm) |
140x250x42 |
| Bore Diameter (mm) |
140 |
| Outer Diameter (mm) |
250 |
| Width (mm) |
42 |
| d |
140 mm |
| D |
250 mm |
| B |
42 mm |
| C |
42 mm |
| Angle (α) |
30 ° |
| a |
35.3 mm |
| r min. |
3 mm |
| r1 min. |
1.1 mm |
| 2B |
84 mm |
| da min. |
147 mm |
| Da max. |
243 mm |
| ra max. |
1 mm |
| Weight |
8.78 Kg |
| Basic dynamic load rating (C) |
345 kN |
| Basic static load rating (C0) |
525 kN |
| (Grease) Lubrication Speed |
1800 r/min |
| Bore Type |
Cylindrical Bore |
| Enclosure |
Open |
| Configuration |
Duplex |
| Bore Size |
140 mm |
| Outside Diameter |
250 mm |
| Width |
42 mm |
| Fillet Radius/Chamfer |
3 mm |
| r1 |
1.1 mm |
| Dynamic Load Rating |
345,000 N |
| Static Load Rating |
525,000 N |
| Limiting Speed - Grease |
1,800 rpm |
| Limiting Speed - Oil |
2,400 rpm |
| da1 (min) |
154 mm |
| da2 (min) |
147 mm |
| Da1 (max) |
236 mm |
| Da2 (max) |
243 mm |
| ra (max) |
2.5 mm |
| ra1 (max) |
1 mm |