Reinforced design of four row cylindrical roller bearings .
Windows type steel cage , special solid rollers.
(only for a few ultra-large back-up roll bearings) plate strip mill
Example: SKF 315599A (FAG 526169, NSK STF800RV1011, FCDP160216700E)
I. D: 800mm
O. D:1080mm
Wide: 700mm
Weight :1950 Kg
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