Although bearings and other precision components are usually made of hardened steel or metal alloys, components used in high-load applications still fail due to excessive wear, surface fatigue, pitting, wear, and corrosion.
This situation can be exacerbated in applications where metal to metal interactions, high-speed repeated friction, or almost no lubrication are present.
Fortunately, there are several unique combinations of carbon based coatings that can provide extremely high surface hardness, low friction coefficient, and corrosion resistance
BALINIT C coating is a WC/C ductile carbide carbon coating with high resistance to adhesive wear (scratch).
Bearings often suffer from severe and unevenly distributed abrasive wear. Coatings such as BALINIT C are particularly suitable for surface hardening and for ball and roller bearing steel, as they can be applied at temperatures below 200 ° C.
PVD coating can be applied not only to inner and outer rings and cylinders, but also to balls in ball bearings, with a coating thickness of 0.5-1 μ m。 The good polishing quality of the coating offsets the slight increase in roughness, making the raceways of the inner and outer rings smooth, providing additional protection against wear and pitting.
The bearings in the soft calendering roller of a paper machine often show stains. PVD coating not only reduces the possibility of application, but also makes bearings harder through coating, indicating that the lifespan of these components can be increased by three to four times. Therefore, paper mills can delay bearing replacement until the calendering roller needs to be reground, significantly reducing costly production downtime.
Similarly, cylindrical roller bearings in compressors often withstand low loads and vibrations, leading to potential wear. The application of PVD coating on bearings can eliminate any such possibility.
2023-04-04