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SIFT MACHINERY Co., Ltd,established in 2009,seated at beautiful seaside city Qigndao,are mainly responsible for manufacturing and export of slewing bearings,the factory is in Xuzhou which is known as the “bearing capital. SIFT MACHINERY CO.LTD is a professional manufacturer engaged in the research and development and production of slewing bearing including single roll ball type, cross roller type, double row ball type, three rows of roller type,ball-and-roller type and all kind of Non-standard slewing bearings.Our company has a group of technical designers with senior titles, adhering to advanced manufacturing technology and production standards, and has an industry leading level in the research and development of various series of slewing bearings,special and non-standard slewing bearings. The product has the characteristics of reasonable design, light in weight, strong bearing capacity and wide application. The product diameter range is 200-10000mm, and the precision covers three grades of P0, P5 and P6. Widely used in engineering machinery, construction machinery, ship ports, metallurgy, lifting, environmental protection, petroleum, chemical, military, wind power, medical equipment and many other fields. In 2010, the company passed the ISO90001-2000 quality system certification, and actively explored overseas markets in the same year. The products were exported to Europe, America, Asia and other countries and regions. In 2015, the company passed the CCS factory certification and ABS product certification. At present, the company can undertake CCS, ABS, BV, GL and other certified products.