Unidirectional needle bearing with single-foot leaf spring

The utility model discloses a unidirectional needle bearing with a single-foot leaf spring. The unidirectional needle bearing comprises a stamped outer ring made from sheet steel, a nylon retainer, a quill roller and a ferrule. The nylon retainer is arranged between an inner rolling path of the stamped outer ring and the ferrule. The quill roller is arranged in a window of the nylon retainer. The leaf spring is arranged in the nylon retainer and has a single foot. One end of the leaf spring is fixedly connected with the nylon retainer, and the other end of the leaf spring makes contact with the quill roller. The unidirectional needle bearing has the advantages that the frictional force between the quill roller and a shaft after the leaf spring abuts against the quill roller is reduced, the requirement of a customer for bearing performance is met, and the service life of the bearing is prolonged.