HSE-2 series dual worm slewing drive for construction machinery Luoyang Longda Bearing Co., Ltd. is a professional slewing drive since 1999, located in Yiyang bearing industrial park in Luoyang China, Covers ares of 30 acreage, we owns more than 100 staffs and have nearly 60 all kinds bearing manufcturing and testing facilities, LDB company specialized in designing, manufacturing, selling slew...