Multi-stone honing tools - high cutting performance, for perfect surfaces

Multi-stone honing tools are high-precision, very sturdy honing tools for honing of bores in a diameter range of 4 mm to over one meter. Several honing stones  are arranged on the circumference of the tool. These are pressed by an internal cone against the bore, generating the desired honing material removal. 

DIAHON multi-stone honing tools are significantly more efficient in comparison to single-stone honing tools in stock removal and in generation of the desired surface quality. 

Multi-stone honing tools are designed as one-step tools or as double expansion tools (e.g., for plateau honing).

Our application engineers establish the appropriate tool principle depending on part geometry and bore requirements. For queries please contact werkzeug(at)

We optimise the our honing tools with metal or epoxy bond hones for processing of a wide range of materials, such as NiKaSil, hard chromium, aluminium, various oxide coatings (e.g., APS-, LDS-, RSW-, CBC- or FeC-coatings / PTWA), free cutting steel, tool steel, hardened steel (e.g., 16MnCr5, C45, VA-steel, ST52, 17CrNiMo6, 34CrNiMo6, 42CrMo4V, 9SMn28k), various types of grey cast iron (e.g., G26Cr, GGG40 and others) as well as custom materials such as CFC, graphite or titanium-aluminium alloys.