Abstract: A lubricating system for an antifriction bearing comprises a supporting member fixed to the outer race ring of the bearing and provided with a plurality of passageways, a filling of porous material soaked with a liquid lubricant mounted in said passageways and in spaces located laterally of the antifriction bearing and surrounding the shaft journalled by the antifriction bearing in the supporting element, a disc fixed to the shaft in one of such spaces for hurling lubricant seeping through the bearing onto the filling to be absorbed thereby and means for mounting a wick in the other one of said spaces in frictional contact with the shaft and in contact with the porous material, said wick transferring lubricant from the porous material to a peripheral surface of the shaft wherefrom the lubricant passes through the antifriction bearing and into contact with said disc. As a result, the lubricant is circulated through the antifriction bearing without escaping therefrom.