With a product range of more than 1,650 tool types and over 44,000 different articles, Gühring OHG is one of the world’s leading suppliers of rotary cutting tools and ranks among the top addresses for equipping new machines. Structured into four divisions – tool, service, carbide as well as machine and plant division – this owner-managed company provides solutions from a single source optimised for the specific process and application. Its comprehensive range of high-quality standard products and innovative customised solutions sets international standards in terms of quality, efficiency and process reliability. To maintain and further advance this leading position, Gühring is continually optimising its processes and products. For this reason, in the special tools area, a comprehensive test has been running for the last two years into changing the cooling lubricant filtration on the grinding machines for spiral grooves over to systems that do not use filter aids. In addition, these systems must be flexibly deployable with oils or emulsions, and be as compact as possible. In view of the consequences of such a decision, the types of equipment available on the market were all subjected to complex practical testing. The tool company was particularly impressed by the Maxflow compact filter system of GKD – Gebr. Kufferath AG, which works without filter aids and combines filtration and briquetting in a single piece of equipment.