Slewing bearing These materials are hard,

Slewing bearing These materials are hard, some applications can replace metal material of the workpiece, in the production  machine tool spindle  process also requires the detection of surface roughness. Three, with the roughness of the technology and features continue to strengthen and improve, as well as in-depth promotion and application, more and more industries were found to be demand for roughness testing, except machinery  precision bearing  manufacturing, the electricity, telecommunications, electronics, , such as the production process also need to assess the roughness on the switch coupling, integrated circuits and semiconductors, and even stationery used in people's lives, tableware, tooth surface roughness of the surface to be used in human testing.