Stamping bearing housing has the advantages of high precision, good gloss, no extension of scars and burrs. The idler roller bearing housing comprises a housing and an inside bearing, labyrinth inner and outer seals, and the outer end of housing has waterproof and dustproof cover. Inside and outside the seals have the labyrinth clearance. Because of the protective cover and the dust cover in the original structure, the structure is simple, the parts are reduced, and the housing depth is reduced, and the material is saved, and the manufacturing cost is greatly reduced. At the same time, the seals effect can be improved by extending the clearance and the length of the labyrinth, and the service life of the idler roller can be prolonged. The good sealing performance of the bearing housing for idler roller requires strict quality control to ensure the structure and sealing of the components, so that the bearing housing for idler roller bearing has good sealing performance.