... gear, bevel gear,sprial bevel gear,internal gear,sprocket,transmission,reducer,shaft and sleeve etc.material: 20CrMnTinormal module:4number of teeth ... :34 22profile angle: 20°Addendum coefficient:1shifting coefficient:0ProductsAll kinds of gears (spur gear, bevel gear, sprial gear, ring gear, internal gear, sprocket, chain wheel) transmission, gear ... on teeth of gear.CertificateISO9001:2000Minimum ...