... .semi-automatic 2.double grinding heads gear chamfering and rounding machins is suitable to grind all ... gear parts . semi-automatic,double grinding heads gear chamfering and rounding machins is suitable to grind all kinds ... the special size and structure that may affect chamfering quality.Specification:Workpiece dia.(Mm):25-350Module:1. ... 13,17,25,35,57 four classes Gear chamfering and rounding machine