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Surface Coating
Corrotect and Durotect – highly effective in the fight against corrosion
Thin layers based on zinc-iron alloys have proven themselves in corrosion protection. The low layer thickness means that the raceways can also be coated without increasing internal clearance or losing preload. In solar power applications, radial insert ball bearings with Corrotect coating offer a cost-effective alternative to bearings made of corrosion-resistant steel without having to accept the reductions in load carrying capacity associated with this material. The bearings remain protected against corrosion for a very long time. This increases the operating life of the housing units considerably.The sliding partner (shaft/pin) of plain and spherical plain bearings can be coated with chromium mixed oxide (LC layer) on a columnar chromium layer (Durotect CK+) to provide anti-corrosion protection and to improve the sliding function. Combining the basic layer with a soft sliding layer in this way improves not only the running-in behavior but also the friction and wear behavior.
Durability and resistance to corrosion are often underestimated but decisive criteria for ensuring high reliability and long operating life with low maintenance requirements and high cost efficiency. Schaeffler offers durable bearing solutions with an operating life of up to 20 years.