The MR Series ball bearings are created and manufactured for those applications where purely radial loads must be supported in a PRELOADED condition. They are perfectly adapted to those applications where the necessary clearance in needle and roller bearings is not desirable. "MR" type bearings are fitted with nitrile rubber wiper seals. The retainer is held between two flat retaining rings which also back up the seals.
Visit the Crawford Precision Engineering website for more information on Type MR