KOYO
Tapered roller bearings 30228JR
Bearing KOYO 30228JR, Ø140×250×42 mm. Request a quote — worldwide shipping.
Type Tapered roller bearings
Dimensions
Ø 140 × 250 × 42 mm
d140Bore Ø (mm)
×
D250Outer Ø (mm)
×
B42Width (mm)
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Technical specifications
| d | 140 mm |
| D | 250 mm |
| T | 45.75 mm |
| B | 42 mm |
| C | 36 mm |
| r(min.) | 4 mm |
| r1(min.) | 3 mm |
| Basic load ratings : Cr | 526 kN |
| Basic load ratings : C0r | 570 kN |
| Fatigue load limit : Cu | 71.8 kN |
| Limiting speeds(Grease lub.) | 1500 min-1 |
| Limiting speeds(Oil lub.) | 1900 min-1 |
| Load center spread : a | 49.4 mm |
| Constant e | 0.44 |
| Axial load factors : Y1 | 1.38 |
| Axial load factors : Y0 | 0.76 |
| da(min.) | 158 mm |
| db(max.) | 163 mm |
| Da(max.) | 236 mm |
| Da(min.) | 219 mm |
| Db(min.) | 237 mm |
| Sa(min.) | 9 mm |
| Sb(min.) | 9.5 mm |
| ra(max.) | 3 mm |
| rb(max.) | 2.5 mm |
| (Refer.)Mass | 8.97 kg |
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KOYO 30228JR