1. Product Overview 6319-2RS1/C3 single row deep groove ball bearing, standard metric dimension 95×200×45mm. Code Definition 6319: Extra large heavy-duty deep groove ball bearing, equipped with extra thickened steel balls to deliver ultra-high radial load bearing capacity 2RS1: Double-sided contact rubber lip seal, fully isolates dust, mud, moisture, metal scraps and all types of fine abrasive particles C3: Widened internal radial clearance, specially engineered for heavy