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Auto Spare Parts , Thrust Ball Bearing 51306 Chrome Steel P0 , P4 , P5 , P6 Specifications : Model Number 51306 Structure Thrust Type Ball Bore Size 30(mm) Outside Diameter 60(mm) Width 21(mm) Material Bearing steel (gcr15) Features High quality and high speed Seals Type Open Cage material Nylon , steel , brass Clearance C0 , C2 , C3 , C4 , C5 Precision Rating P0 , p6 Greese As you requirement Number of Row Single Row Application Heavy machinery (construction and mining