Luoyang Sennuo Precision Bearing Co., Ltd. is a professional manufacturer of large-size precision bearings with diameter 150mm – 4500mm. Our products can reach in precision grade of P5, P4, P2. Our products are widely used in the fields of metallurgy，mine，petroleum，machinery，electric power，paper-making，leather-making and so on. Our company will provide excellent service with various aspects, both foreign and domestic customers are welcome to contact with us for business. E-mail:sale@lysnbearing.com& bearing556@gmail.com msn:bearing556@hotmail.com skype: bearing556 Our competitive products are following : 1: Thin-wall series deep groove ball bearings , four-point contact ball bearings and crossed cylindrical roller slewing bearings for robots; 2: Bearings for casting rolling mills , cold rolling mills , hot rolling mills and high precision foil rolling mills ; 3: Large- size and extra large-size slewing bearing