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
The letter stands for Electrolytically applied (galvanic). This confirms that the coating is not mechanical (zinc flake) or hot-dip, but a precise electroplating bath process, offering superior uniformity on complex geometries.
It is ideal for parts where the mating component has a large counterbore or will not contact the planar shoulder.
After conducting research, I found that "DIN 509 E06 X02" appears to be a German standard (DIN) related to a specific type of industrial coating or surface treatment. din 509e06x02 exclusive
Every lathe turning insert has a radius at its cutting tip. Without an undercut, the lathe tool cannot physically machine a perfect 90∘90 raised to the composed with power
Unlike Type F undercuts (which have two transition radii), the is used when only the longitudinal surface needs to be ground. It is the "minimalist" choice for engineers who want maximum strength with minimum material removal.
Whether your component will undergo post-machining. Forms and dimensions of undercuts inside corner, leaving a small material fillet
Let’s break down each section of this specific identifier.
By intentionally cutting a minor recess into the corner, the designer ensures that the mating part makes uniform contact across the vertical face of the shoulder. 2. Decoding the Nomenclature: DIN 509 E0.6x0.2
Instead, a tiny radius is naturally left behind by the tool tip. If a mating part with a sharp internal edge attempts to slide down the shaft, it will jam against this radius, failing to sit flush against the planar shoulder. This confirms that the coating is not mechanical
| Old DIN | Current ISO/EN | Notes | |---------|----------------|-------| | DIN 509E06X02 | ISO 2081 – Fe/Zn 6 / C (blue) | C = chromate passivation, blue | | Thickness 6 µm | Now often 5 or 8 µm standard | 6 µm is less common now | | X = single layer | Implicit in ISO 2081 | No undercoat |
Manually calculating and sketching undercuts on engineering drawings is obsolete. Today, the profile is integrated directly into advanced manufacturing ecosystems: Undercut TableDIN 509 | PDF | Machining - Scribd
Every character in the standard designation provides explicit geometric instructions to the machinist:
: The 0.2mm depth is designed for "exclusive" fitment. It ensures that when you slide a bearing or a gear onto a shaft, it sits perfectly flush against the shoulder. Without that tiny 0.2mm of breathing room, the tiny leftover "fillet" from the machining tool would prevent a perfect 90-degree fit, leading to vibration and eventual machine failure.
Because the "exclusive" chemistry requires tank certification, platers will not run small batches. Expect an MOQ of of parts per month, or a one-time tooling fee of €2,000–€5,000 to change their passivation line to X02.