... bed surface hardening, grinding, quenching hardness HRC50,After the gearbox of headstock quenching, precise gear grinding processing, high-speed ... rigidity, headstock handle adopts focused manipulation. Feeding box gearbox also adopts gear quenching.The slider of machine has ... threadsmm2-40Range of whitworm threads1-14t.p.iRange of worm threadmm1.5-20Diameter of tailstock quillmm300Max.travel of ...