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Thrust Ball Bearing 51306 Chrome Steel P0 , P4 , P5 , P6 51128 Auto Spare Parts Specifications : Model Number 51128 Structure Thrust Type Ball Bore Size 140(mm) Outside Diameter 180(mm) Width 31(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