CD Bearing Co. Was established in 2001, reformed from Chengde Bearing Co., Ltd., a state company established in 1968, located in Chengde, a well known Culture City in China. Our products are deep groove ball bearings, angular contact bearings, double row angular contact bearings, tapered roller bearings, cylindrical roller bearings, etc. We manufacure trolley wheels for 3", 4", 6" conveyor trolleys and X-348, X-458, X-678 Chains, available in two types- full complement type and retainer type ball bearings with triple labyrinth seals. The material of outer ring, innerring and ball is high carbon chrom steel of HRC 58-62 hardness after heattreatment, to ensure long working life and high temperature with suitable clearance designed. Roller turn rollers are available in full balls and two papered roller earings. We are willing to manufacture non-standard bearings of special dimensions, material, structure and seals for small quantity. Any comments of yours will be considered and replied seriously as soon as possible.