ROLLING BEARING WITH SEAL

PROBLEM TO BE SOLVED: To provide a suitable rolling bearing with a seal preventing reduction in sealing performance due to inner pressure rise.SOLUTION: A rolling bearing with seal is such that an inner ring 1 and an outer ring 2 synchronously rotate. The rolling bearing with seal includes lubricant (a) charged in a space between the inner ring 1 and the outer ring 2, and a seal 5 sealing the space between the inner ring 1 and the outer ring 2. The seal 5 includes the followings in the vicinity of the inner diameter end thereof: a dent or neck portion 5a the inner and outer surfaces of which are dented; a dust lip 5b facing an outside shoulder part outer peripheral surface 1b of the inner ring 1; a main lip 5c facing the wall surface of a peripheral groove 8 of the inner ring 1; and a grease lip 5d facing the inside shoulder part outer peripheral surface 1a of the inner ring 1. The grease lip 5d comes in contact with the inside shoulder part outer peripheral surface 1a. The main lip 5c comes in contact with the wall surface 8a of the peripheral groove 8. The dust lip 5b turns to be in a state of non-contact with the outside shoulder part outer peripheral surface 1b.SELECTED DRAWING: Figure 1 【課題】内圧上昇によるシール密封性の低下を防止する好適なシール付転がり軸受を提供する。【解決手段】シール付転がり軸受は、内輪１と外輪２が同期回転する軸受である。シール付転がり軸受は、内輪１と外輪２との間に充填された潤滑油ａと、内輪１と外輪２との間を封止するシール５とを備える。シール５は、その内径端の近傍に内外面が凹んだくびれ部５ａと、内輪１の外側肩部外周面１ｂに面するダストリップ５ｂと、内輪１の周溝８の壁面に面するメインリップ５ｃと、内輪１の内側肩部外周面１ａに面するグリースリップ５ｄと、を有する。グリースリップ５ｄは、内側肩部外周面１ａに接触し、メインリップ５ｃは周溝８の壁面８ａに接触し、ダストリップ５ｂは外側肩部外周面１ｂに非接触状態となっている。【選択図】図１