M5, spherical disc, ceramic disc
Disc styli are used, among other things, to measure rotationally symmetrical workpieces with undercuts or recesses and bores. However, a strong filtering of the surface roughness usually occurs. With the design of the sphercial disk stylus, a higher accuracy is achieved compared to disk styli.
Ceramic is a very light material and is therefore mainly used for styli spheres with large diameters. Ceramic discs have a very low porosity and a high-precision. They are particularly suitable for scanning rough surfaces such as cast iron
Discs are screwed directly to extensions or special shafts using clamping disks. Normally, fastening material is not included in the delivery package