INA track rollers are often subjected to aggressive media. In such applications, corrosion protection is therefore a decisive factor in achieving a long operating life of the INA bearings.
In principle, corrosion-resistant steels may be used for track rollers. In many applications, however, the special coating Corrotect® is more cost-effective.
Corrotect®
Corrotect® is an extremely thin, electroplated surface coating with a thickness of 0,5 μm to 3 μm.
The coating is effective against moisture, contaminated water, salt spray and weakly alkaline and weakly acidic cleaning agents.
Yoke type track rollers PWTR and INA stud type track rollers PWKR with the suffix RR have the CR(VI)-free Corrotect® coating as standard. Other yoke and stud type track rollers with Corrotect® coating are treated as special designs.
Fitting of coated track rollers
In order to reduce the press-in force required, the surface should be lightly greased; the tolerances are increased by the thickness of the coating.
Uncoated and coated stud type track roller after salt spray test
Before track rollers with the Corrotect® coating are fitted, compatibility with the media should always be checked.
