Search for: “DIN 509 part 1 (1974)” or “DIN 50900” – but note it’s withdrawn and for historical reference only.
During cylindrical grinding or turning operations, a cutting tool cannot machine a mathematically perfect 90-degree interior corner without wearing out its tip instantly. The 0.2 mm depth creates a relief pocket. This lets the grinding wheel finish the cylindrical surface smoothly without hitting a sharp corner boundary.
In high-precision manufacturing, structural longevity and perfect assembly fit depend heavily on micro-geometric details. Among these, the machining undercut—or Freistich in German engineering terms—plays a vital role. The stands out as an industry-standard geometric detail designed to optimize stress distribution and provide clearance for mating components. Understanding the DIN 509 E0.6x0.2 Standard din 509e06x02 exclusive
The designation DIN 509E06X02 EXCLUSIVE refers to a highly specific standard or product within the engineering or manufacturing sectors. This write-up aims to provide clarity on what this designation entails, its relevance, and implications for industries or applications where such standards are critical.
An undercut (or relief groove) is an internal deviation from an ideal sharp corner on a stepped shaft or bore. Without an undercut, manufacturing constraints make it impossible for a lathe cutting tool to produce a perfectly sharp 90∘90 raised to the composed with power intersection. Search for: “DIN 509 part 1 (1974)” or
The official DIN 509:2022-12 standard is available for purchase from the German standards body, DIN Media. The PDF version is priced at including VAT, with multi-user licenses also available.
Search for companies holding IATF 16949 (automotive) or AS9100D (aerospace) certifications that list "X02 proprietary finishes" in their scope. Look for German firms like AHC Oberflächentechnik , Rösler , or Dörken MKS-Systeme (though Dörken uses different codes). This lets the grinding wheel finish the cylindrical
typically used for workpieces where only the cylindrical surface requires a finishing process (like grinding), and there is no specific requirement for the adjacent planar face. : This represents the of the groove in millimeters. : This represents the of the groove in millimeters. Key Technical Specifications According to the DIN 509 standard
mm) : Indicates the radial depth that the cutting tool penetrates below the ideal cylindrical surface of the workpiece. What Makes It "Exclusive"?
: Customers and end-users can have greater confidence in the products they purchase, knowing they meet highly stringent criteria.