該gai設she備bei采cai用yong高gao強qiang度du鑄zhu鐵tie床chuang身shen，經jing過guo時shi效xiao處chu理li消xiao除chu內nei應ying力li，確que保bao長chang期qi穩wen定ding運yun行xing，雙shuang主zhu軸zhou獨du立li控kong製zhi係xi統tong允yun許xu差cha異yi化hua參can數shu設she置zhi
，滿man足zu複fu雜za工gong件jian的de特te殊shu加jia工gong要yao求qiu。自zi動dong潤run滑hua係xi統tong延yan長chang關guan鍵jian部bu件jian壽shou命ming
，減jian少shao維wei護hu停ting機ji時shi間jian。人ren性xing化hua操cao作zuo界jie麵mian簡jian化hua調tiao試shi流liu程cheng，新xin手shou也ye能neng快kuai速su掌zhang握wo。