A 2.23 m all-casing drilling rig slewing ring was successfully launched in Maanshan Fangyuan Slewing Ring Co., Ltd on September 25, 2014, which marked the company’s expansion of slewing ring applications.
Tested by the high-precision large coordinate measuring machine, the all-casing drilling rig slewing ring is proved to have an gear accuracy of grade 7, and the clamping surface accuracy of wedgewedge-shaped structure has reached ± 0.03 °, with the rest of the technical indicators reaching or well above the required standards.
