Introduction to import bearing sealing device

Seal is to keep good lubrication status inside the imported bearing, and prevent the cooling water, iron oxide, prolong the service life of bearing surface impurities in work. Bearing damage due to the rolling mill bearing seal is near the roller side parts, bearing often because grease pollution, erosion, wear, peeling, and even make the parts work surface fracture, especially in cold strip rolling emulsion infiltration, disable grease faster. Imported bearing seal into bringing seal and outer seal two kinds. By adopting the combination of labyrinth and contact the main external sealing design. The labyrinth, the greater the level Not less than the poles) The smaller the gap sealing effect is better. Radial labyrinth clearance according to the size of the bearing size take unilateral 0. 6 to 1. 5毫米; The axial 4 ~ 6 mm. Contact the skeleton oil seal, it is widely used on mill, in order to increase the effect can be used in two or three parallel. Oil seal has directivity, and cannot be installed backwards. Hot rolling mill with two oil seal, generally two oil seal lip to bearing seat, to prevent sewage into the outside world. Cold strip rolling is generally installed three near the bearing oil seal oil seal lip to inward, to prevent grease spill affect the quality of rolled products. Be careful when using the oil seal, avoid lip crashed when roller, affect the sealing effect. RBR type seal ring: this is a kind of special rubber lip type sealing ring rolling mill bearing, widely used in recent years. RBR sealing ring with the method of axial sealing, the lip stick on the base of gland, not affected by beating roll, bearing internal old fat can overflow, external cooling water, iron oxide, the impurity was blocked by the lip into, has good sealing effect. And easy to use, when the roll changing roll load bearing is not affected by any.