... price 4.Offer OEM NTN, SKF, NSK bearing 51309 single direction axial load bearing Features 1. Low noise& low vibration2. ... steel, stainless steel, carbon steelCage materialSteel, brass, nylonSeriesSingle direction: 51000 seriesDouble direction: 52000 seriesCertificationISO9001:2000Precision ratingP0, P6, P5, P4, ... .Our products: NTN, SKF, NSK bearing 51309 single direction axial load bearing