FOR REFERENCE ONLY
Bearing No. 30228JR
Specification data (main dimensions, etc.)
| d(mm) | 140 |
|---|---|
| D(mm) | 250 |
| T(mm) | 45.75 |
| B(mm) | 42 |
| C(mm) | 36 |
| r(min.)(mm) | 4 |
| r1(min.)(mm) | 3 |
| Basic load ratings : Cr(kN) | 526 |
| Basic load ratings : C0r(kN) | 570 |
| Fatigue load limit : Cu(kN) | 71.8 |
| Limiting speeds(Grease lub.)(min-1) | 1500 |
| Limiting speeds(Oil lub.)(min-1) | 1900 |
| Load center spread : a(mm) | 49.4 |
| Constant e | 0.44 |
| Axial load factors : Y1 | 1.38 |
| Axial load factors : Y0 | 0.76 |
Mounting dimensions,weight (reference)
| da(min.)(mm) | 158 mm |
|---|---|
| db(max.)(mm) | 163 mm |
| Da(max.)(mm) | 236 mm |
| da(min.)(mm) | 219 mm |
| db(min.)(mm) | 237 mm |
| Sa(min.)(mm) | 9 mm |
| Sb(min.)(mm) | 9.5 mm |
| ra(max.)(mm) | 3 mm |
| rb(max.)(mm) | 2.5 mm |
| Mass(Refer.)(kg) | 8.97 kg |
2026/07/21