When specifying this on a technical drawing, it is often called out using a leader line pointing to the corner:
The DIN 509 standard details several undercut profiles—primarily Types E, F, G, and H. The choice of carries specific structural implications for a machined part.
inside corner, leaving a small material fillet. If a mating component (such as a bearing inner ring) features a sharp corner, it will collide with that fillet, preventing the parts from seating flush against the shoulder. The din 509e06x02 exclusive
Because this is a thin, high-performance code, you will not find it on ship anchors or bridge girders. Instead, look for it in these engineered niches:
Following the "x," the value 0.2 denotes the depth (t) of the cut, also measured in millimeters. This is the vertical distance from the original surface of the shaft down to the bottom of the groove. For a 0.6 mm radius, a depth of 0.2 mm is standard. This shallow depth ensures structural integrity is maintained while providing just enough clearance for a grinding wheel or threading tool to run out. It is important to note that while the "0.6 mm" refers to the radius (the curve), the "0.2 mm" refers to the depth . Some applications may refer to a simplified notation like "DIN 509-E1x0,2," where the "1" refers to a larger radius of 1 mm; however, "E06X02" specifically indicates the smaller, more fine-detail undercut of 0.6mm radius. When specifying this on a technical drawing, it
Mastering the DIN 509 E0.6x0.2 Standard: Engineering Precision Undercuts
If you have any additional context or details about where you encountered this standard, I might be able to provide more targeted guidance. If a mating component (such as a bearing
According to the official DIN 509 Standard Tables available via Scribd , Form E grooves feature fixed mathematical ratios to maintain proper clearance and run-out angles. Below is the specific engineering data tailored to the profile: Parameter Type Engineering Designation Exact Dimension Groove Form Type E (Single-Surface Relief) Corner Radius Groove Depth Minimum Width Run-out Length Recommended Shaft Range Typically over 3. Why the "Exclusive" Status Matters in CAD/CAM Design
Form E is the classic solution when a shaft transitions into a flat shoulder, and only that flat vertical wall serves as a contact point. It is distinct from Form F, which cuts deeper horizontally into the cylinder body to accommodate threads or secondary ground outer diameters.
The double-digit code (06) refers to the . In standard DIN 509, a code like 06 implies a minimum thickness of 6 micrometers (µm) .