A kind of sealed type four-row tapered roller bearing
technical fielda kind of sealed type four-row tapered roller bearing, belongs to technical field of bearings.
background techniquetraditional bearing is due to project organization reason, and the impurity of bearing outside enters bearing inside, affects bearing working life; Sealed type four-row tapered roller bearing has three positions to need a sealing, and its both sides have between seal ring, two inner rings and have seal ring; Bearing is Spielpassung with coordinating of roll, between four-row tapered roller bearing and roll, there is axial reciprocating to move at work, in the time that axial reciprocating moves, can produce very large pressure of moment, impurity can be clamp-oned in bearing bore, therefore the sealing between two inner rings is very crucial, and this position seal failure occurs often; Between existing two inner rings, sealing configuration mainly contains two kinds of modes below, mode one seal ring is softer, seal ring can not install in bearing producer, can only be in the on-the-spot installation separately of steel mill, in the time installing separately, often there is the seal ring problem of rolling about, mode two these structures are mainly used in preventing that in bearing, grease leaks, and enter poor effect in bearing for anti-impurity.
summary of the inventionin view of the defect that prior art exists, the purpose of this utility model is to provide a kind of sealed type four-row tapered roller bearing that sealing between sealed type tapered roller bearing two inner rings is carried out to optimal design.
For achieving the above object, the technical solution that the utility model adopts is: a kind of sealed type four-row tapered roller bearing, seal ring is fixedly mounted between two inner rings, a seal ring part is provided with Steel Skeleton, another part is rubber lip structure, seal ring is interference fit with Steel Skeleton part and inner ring a, rubber sealing ring lip structure and inner ring b side seal.
A kind of sealed type four-row tapered roller bearing, its beneficial effect is: convenient installation, in the time that bearing inner ring assembly is installed, seal ring connects together and installs simultaneously; Overcome original structure mode one seal ring softer, the defect that there will be seal ring to roll about while being provided with at steel mill scene, has solved the problem that causes seal failure, and the pressure producing between bearing and roll is larger, seals tighter.
Brief description of the drawings
Fig. 1 is a kind of structural drawing of sealed type four-row tapered roller bearing;
Fig. 2 is a kind of sealing place local structural graph of sealed type four-row tapered roller bearing.
Fig. 1, Fig. 2 reference character are as follows: 1, seal ring, 2, inner ring a, 3, Steel Skeleton, 4, rubber lip structure, 5, inner ring b.
The structural drawing of a kind of sealed type four-row tapered roller bearing showing with reference to the accompanying drawings is below described as follows: a kind of sealed type four-row tapered roller bearing, seal ring 1 is fixedly mounted between two inner rings, seal ring 1 part is provided with Steel Skeleton 3, another part is rubber lip structure 4, seal ring 1 is interference fit with Steel Skeleton 3 parts and inner ring a2, seal ring 1 rubber lip structure 4 and inner ring b5 side seal.