DLC coated bearing cages | Design Engineering
NKE roller bearing cages with DLC coating designed for harsh operating conditions.
NKE introduced rolling bearing cages with DLC (Diamond-like Carbon) coating that the company says are tougher and last longer than the standard, uncoated brass variants. To improve the performance of radial cylindrical roller bearings and radial deep groove ball bearings in particular, NKE uses a cage made from high strength material with an amorphous carbon coating, the DLC coating with NKE suffix SQ202. Due to its low coefficient of friction and good sliding properties, the coating provides protection from adhesive wear and withstands lubricant starvation conditions. The use of the coating is not restricted to cages – practically all NKE bearing components made from steel can be supplied with this surface treatment.