Luoyang LYC Bearing Co., Ltd. is the biggest comprehensive bearing manufacturer in China. Its product covers 6000 sizes, 9 categories in all precision tolerance classes and its yearly output volume is 70 million pieces. The product's minimum inside diameter is 10 mm and maximum outside diameter is 5.49 m. The lightest bearing weighs only 25.4 grams and the heaviest one weighs 15 tons.