FOR REFERENCE ONLY
>
Bearing No. 30311JR
Specifications
(Boundary dimensions ...etc)
| d(mm) | 55 |
|---|---|
| D(mm) | 120 |
| T(mm) | 31.5 |
| B(mm) | 29 |
| C(mm) | 25 |
| r(min.)(mm) | 2.5 |
| r1(min.)(mm) | 2 |
| Basic load ratings : Cr(kN) | 187 |
| Basic load ratings : C0r(kN) | 170 |
| Fatigue load limit : Cu(kN) | 27.0 |
| Limiting speeds(Grease lub.)(min-1) | 3300 |
| Limiting speeds(Oil lub.)(min-1) | 4500 |
| Load center spread : a(mm) | 25.5 |
| Constant e() | 0.35 |
| Axial load factors : Y1() | 1.74 |
| Axial load factors : Y0() | 0.96 |
Mounting dimensions
| da(min.)(mm) | 67 |
|---|---|
| db(max.)(mm) | 71 |
| Da(max.)(mm) | 108 |
| Da(min.)(mm) | 104 |
| Db(min.)(mm) | 111 |
| Sa(min.)(mm) | 4 |
| Sb(min.)(mm) | 6.5 |
| ra(max.)(mm) | 2 |
| rb(max.)(mm) | 2 |
Refer.
| (Refer.)Mass(kg) | 1.65 |
|---|
2025/06/01