Din 509-e0.6x0.2 Access

According to standardized DIN 509 tables , an E 0.6 x 0.2 undercut typically follows these physical requirements: Tolerance is typically +0.1/-0.2 mm Depth (t1) Tolerance +0.1 mm Width (f) Total width of the relief groove Machining Allowance (z) Material removed during final finishing Workpiece Diameter >3 to 18 mm Recommended range for this size Why Use a Type E Undercut?

| Parameter | Symbol | Value for E 0.6x0.2 | Notes | | :--- | :--- | :--- | :--- | | Groove Width | a | 0.6 mm | Tolerance: +0.1 mm / -0 mm typically | | Groove Depth | t | 0.2 mm | Tolerance: ±0.05 mm | | Bottom Diameter | dₖ | d₁ – 0.4 mm | (where d₁ is the shaft diameter) | | Transition Radius | r | ≤ 0.1 mm | Sharp, but not knife-edged | | Shoulder Corner Radius | r₁ | ≤ 0.1 mm | Max allowable radius on mating shoulder | Din 509-e0.6x0.2

Choose this if your assembly relies on a precise axial stop (e.g., a bearing contacting a shoulder) and if the shaft sees predominantly torsional or static loads, not heavy cyclic bending. According to standardized DIN 509 tables , an E 0