Nagel Tools for Honing Crank Bore, Cylinder Liner, Connecting Rod, Gun and Block Hone Tools

The single-pass diamond tool is a conical- shaped mandrel, said Sanjai Keshavan, man- ager of the ECO hone and microfinishing systems division for Nagel Precision Inc., Ann. Arbor, Mich. Once a single-pass hone enters a part bore, the bore size equals the tool diameter.

Keshavan said most tools used are made of plated diamond abrasive and that he refers to the process as “diamond sizing.” He added that CBN hones are applied to hardened materials those as hard as 58 to 62 HRC-in connection with traditional stroke honing to help prevent generating microcracks in the workpiece, which diamond sizing of hard materials can cause.