The company offers CMM styli with drilled silicon nitride balls measuring1-mm or larger. Silicon nitride is an extremely hard hybrid ceramic (Si3N4) with a low coefficient of friction, which lends itself to a quality polished finish. Silicon nitride balls are commonly used in machine tool spindle bearings and aircraft flap actuators to provide longer service life, the company says.
Editor PickMachine Measures Cylindricity of Large, Heavy Workpieces
Mitutoyo offers its RA-6000CNC, a custom-built CNC roundness/cylindricity measuring system with high accuracy.