BEARING SEAL DEVICE FOR CONSTRUCTION MACHINERY

摘要

PROBLEM TO BE SOLVED: To provide a bearing seal device for a construction machinery to suppress leakage of lubrication oil and also prevent entrance of dust. SOLUTION: In a bearing device for a construction machinery wherein seal devices 25 are situated on both sides of a bearing 20, the seal device 25 comprises an annular first support body in an L-shape in cross section fixed at one of members on the sides of the bearing; an annular second support body in an L-shape in cross section situated on the shaft side of the sides of the bearing; and an annular lubrication seal body situated in an annular space formed by the first and second support bodies.