1. Product Overview 6317-2RS1/C3 single row deep groove ball bearing, standard metric dimension 85×180×41mm. Code Definition 6317: Extra large heavy-duty deep groove ball bearing, fitted with thickened steel balls for superior radial load capacity 2RS1: Double-sided contact rubber lip seal, fully blocks dust, moisture, mud, metal scraps and fine abrasive particles C3: Enlarged internal radial clearance, designed for high-speed, heavy-load and high-temperature working