The new HPC-Line (High pressure ceramic) from EWS sets new standards for driven tools with axial and radial rotary unions.

The time when you had to decide between using high speed in conjunction with low coolant pressure or high pressure at low speed is over. The newly developed EWS.HPC-Line sealing technology now represents a further quantum leap. The seal set, which is based on technical ceramics, is capable of covering 70 bar at up to 12,000 1/min. Added to this is unrestricted dry-running capability.

The running-in process in particular meant the technical knockout for many sealing systems after only a short time, because the previous seals burned out after only seconds or they hardened, which then led to failure within a very short time. The technical ceramic used in the HPC-Line has excellent dry-running properties, which was a key criterion in the developers' specifications.

Even in terms of heat generation, there is something positive to report, because the high-precision face seal causes far less heat than was the case with lip seals due to the optimized friction factor µ. In addition, the frictional force FR= µ x FN was reduced to a minimum through geometry optimization and intelligent load balancing at the sealing elements.