Drag reduction retainer and bearing with drag reduction retainer

The utility model provides a drag reduction retainer which comprises a frustum-shaped retainer body, a plurality of window holes are evenly formed in the frustum-shaped retainer body at intervals, thewindow holes are separated through window beams, the window beams on the inner sides of the window holes are provided with odd protrusions making contact with rolling bodies, the protrusions are distributed on the two sides of the window holes, and the number of the protrusions on one side is one more than that of the protrusions on the other side. According to the anti-drag retainer, the protrusions are arranged on the window beam, so that the whole linear contact surface of the window beam and the rolling body is changed into multiple short linear contacts, and friction between the rollingbody and the window hole is reduced; furthermore, folded corners at the bottom of a conventional bearing retainer are removed, so that the bottom of the retainer is in a straight cylinder shape, lubricating oil can enter the b