FOR REFERENCE ONLY
Bearing No. 6389/20
Specification data (main dimensions, etc.)
| d(mm) | 66.675 |
|---|---|
| D(mm) | 135.755 |
| T(mm) | 53.975 |
| B(mm) | 56.007 |
| C(mm) | 44.450 |
| r(min.)(mm) | 6.4 |
| r1(min.)(mm) | 3.2 |
| Basic load ratings : Cr(kN) | 333 |
| Basic load ratings : C0r(kN) | 357 |
| Fatigue load limit : Cu(kN) | 49.3 |
| Limiting speeds(Grease lub.)(min-1) | 3000 |
| Limiting speeds(Oil lub.)(min-1) | 4000 |
| Load center spread : a(mm) | 34.8 |
| Constant :e | 0.32 |
| Axial load factors : Y1 | 1.85 |
| Axial load factors : Y0 | 1.02 |
Mounting dimensions,weight (reference)
| da(mm) | 91.0 mm |
|---|---|
| db(mm) | 77.5 mm |
| Da(mm) | 117.0 mm |
| Db(mm) | 126.0 mm |
| ra(max.)(mm) | 6.4 mm |
| rb(max.)(mm) | 3.2 mm |
| Mass(Refer.)(kg) | 3.52 kg |
2026/07/04