Sealed four-row ball bearing for support and working roller bearing on roller stands
View Patent ↗The invention relates to a sealing roller bearing, in particular, a ball bearing for support and working roller bearings on roller stands, comprising an axially multi-part outer bearing ring and an axially multipart inner bearing ring and a number of rolling bodies rolling on the running tracks in four rows between the bearing rings. The rolling bodies are retained in each row at an equal separation from each other in the circumferential direction by means of a bearing cage and the bearing chamber, formed between the outer bearing ring and the inner bearing ring, is sealed at both axial ends against the ingress of fluids and dirt by annular seals. According to the invention, each bearing cage of the roller bearing is embodied as a conventional pin cage, comprising a first cage disc, a second cage disc and a number of pins connected to both bearing discs, whereby the annular seals sealing the bearing chamber are embodied as lamellar rings with a sealing connection to the first or the second cage disc of both external bearing cages.
1. A sealed rolling bearing, comprising a sealed four-row tapered roller bearing for support roll and working roll bearing arrangements on roll stands said rolling bearing being substantially composed of an axially multi-part outer bearing ring and an axially multi-part inner bearing ring and of a number of rolling bodies which roll adjacent to one another in four rows between the outer bearing ring and the inner bearing ring on raceways thereof, the rolling bodies of each row being held with uniform spacing relative to one another in a peripheral direction by means of in each case one bearing cage, and a bearing space formed between the outer bearing ring and the inner bearing ring being sealed off with respect to intruding fluids and dirt at both axial ends by means of ring seals wherein each bearing cage of the rolling bearing is embodied as a pin cage and is in each case composed of a first cage disk, a second cage disk and a plurality of pins which are connected to the first cage disk and the second cage disk and guide in each case one rolling body with a central axial bore, and in that the ring seals, which seal off the bearing space, are each embodied as a double-wound lamellar ring which are sealingly connected respectively to the first cage disk and the second cage disk of the two axially outer bearing cages.
2. The sealed rolling bearing of claim 1 , wherein one peripheral annular groove is formed in the level outer peripheral faces of the first cage disk and the second cage disk of the two axially outer bearing cages, said peripheral annular groove being in sealing contact with the double-wound lamellar ring which is clamped against an opposite level inner lateral surface of the outer bearing ring and projects into the peripheral annular groove.
3. The sealed rolling bearing of claim 1 , wherein one peripheral annular groove is formed in a axial level outer lateral surface of the inner bearing ring adjacent to outer raceways of the rolling bodies, said peripheral annular groove being in sealing contact with the double-wound lamellar ring which is clamped against a level inner peripheral faces of the first cage disk and the second cage disk of the two axially outer bearing cages and projects into the peripheral annular groove.