Rigia specialized in Slewing ring as rotary table bearings, 30 days delivery, INA, NSK,SKF, IMO, Kaydon ....SPEC could chose, same quality but much lower price. Customized design,technique support,life calculation, total solution offered. Products including crossed roller bearings, four point contact ball slewing ring, double row,inner or outer geared, stainless steel,Aluminum...50-1500mm OD manufactured in China.