- Rolling mill roll neck bearings
- Four-row tapered roller bearings
Bearing No. LM258649D/610/610D
Specification data (main dimensions, etc.)
| d(mm) | 317.500 |
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| D(mm) | 422.275 |
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| T(mm) | 269.875 |
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| W(mm) | 269.875 |
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| r(min.)(mm) | 3.2 |
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| r1(min.)(mm) | 1.6 |
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| Basic load ratings : Cr(kN) | 3140 |
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| Basic load ratings : C0r(kN) | 7450 |
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| Fatigue load limit : Cu(kN) | 747 |
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| Axial load factors : Y2(mm) | 2.12 |
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| Axial load factors : Y3 | 3.15 |
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| Axial load factors : Y0 | 2.07 |
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| Constant e | 0.32 |
Mounting dimensions,weight (reference)
| da(min.)(mm) | 341 mm |
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| Da(max.)(mm) | 407 mm |
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| Da(max.)(mm) | 392 mm |
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| S(min.)(mm) | 8.5 mm |
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| ra(max.)(mm) | 3.2 mm |
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| rb(max.)(mm) | 1.6 mm |
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| Axial load factors : Y2(mm) | 2.12 mm |
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| Axial load factors : Y3 | 3.15 |
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| Axial load factors : Y0 | 2.07 |
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| Constant e | 0.32 |
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| Mass(Refer.)(kg) | 104 kg |