SKF 312844/VJ202 four-row cylindrical roller bearings
Brand:SKF
Original:GERMANY
Type:Cylindrical roller bearing
Item:SKF 312844/VJ202
Inner:529.91mm
Outner:870mm
Thickness:670mm
Weight:1660kg
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Description
SKF four-row cylindrical roller bearings are available in several designs:
with a cylindrical or tapered bore open or sealed Four-row cylindrical roller bearings are used almost exclusively for the roll necks of rolling mill stands, calenders and roller presses. Because they are normally mounted with an interference fit on the roll neck, four-row cylindrical roller bearings are well suited for rolling mill applications where the rolling speed is high.
Because four-row cylindrical roller bearings can accommodate only radial loads, they are mounted together with deep groove or angular contact ball bearings, or with tapered roller bearings (either radial or thrust design) which accommodate the axial loads.
SKF 312844/VJ202 four-row cylindrical roller bearings
Technical data of SKF 312844/VJ202 four-row cylindrical roller bearings
Design
| Design variant/feature | BC4.9/W33WI | |||
Dimensions
| d | 529.91 | mm | |
| D | 870 | mm | |
| B | 670 | mm | |
| C | 670 | mm | |
| D1 | ≈ | 751 | mm |
| F | 615 | mm | |
| b | 22.3 | mm | |
| K | 12 | mm | |
| r1,2 | min. | 7.5 | mm |
| r3,4 | min. | 7.5 | mm |
Calculation data
| Basic dynamic load rating | C | 16800 | kN | |
| Basic static load rating | C0 | 33500 | kN | |
| Fatigue load limit | Pu | 2450 | kN | |
| Calculation factor | kr | 680 |
Mass
| Mass bearing | 1660 | kg |
