- Rolling mill roll neck bearings
- Four-row tapered roller bearings
Bearing No. 4TR686D
Specification data (main dimensions, etc.)
| d(mm) | 685.800 |
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| D(mm) | 876.300 |
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| T(mm) | 355.600 |
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| W(mm) | 352.425 |
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| r(min.)(mm) | 6.4 |
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| r1(min.)(mm) | 3.2 |
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| Basic load ratings : Cr(kN) | 7950 |
|---|
| Basic load ratings : C0r(kN) | 23100 |
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| Fatigue load limit : Cu(kN) | 1880 |
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| Axial load factors : Y2(mm) | 1.62 |
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| Axial load factors : Y3 | 2.42 |
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| Axial load factors : Y0 | 1.59 |
|---|
| Constant e | 0.42 |
Mounting dimensions,weight (reference)
| da(min.)(mm) | 734 mm |
|---|
| Da(max.)(mm) | 852 mm |
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| Da(max.)(mm) | 823 mm |
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| S(min.)(mm) | 11 mm |
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| ra(max.)(mm) | 6.4 mm |
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| rb(max.)(mm) | 3.2 mm |
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| Axial load factors : Y2(mm) | 1.62 mm |
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| Axial load factors : Y3 | 2.42 |
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| Axial load factors : Y0 | 1.59 |
|---|
| Constant e | 0.42 |
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| Mass(Refer.)(kg) | 555 kg |