The goal is simple: to simplify drawings. By referencing ISO 2768, a designer tells the machinist, "Unless I specify otherwise, follow these standard accuracy levels." Breaking Down the "mk" Suffix
It keeps drawings clean. Only critical dimensions (like a bearing fit or a sealing surface) need specific ± tolerances. general tolerance iso 2768-mk
Under ISO 2768-1, there are four tolerance classes: f (fine), m (medium), c (coarse), and v (very coarse). The class is the most frequently used in general mechanical engineering. Linear Dimensions (mm) The goal is simple: to simplify drawings
Understanding ISO 2768-mk: The Standard for General Tolerances Under ISO 2768-1, there are four tolerance classes:
For a length up to 100mm, the 'k' class allows a 0.2mm deviation.
The designation consists of two separate parts that define the accuracy level for different features:
The 'k' class generally allows a symmetry deviation of 0.6mm. Run-out: Circular run-out for class 'k' is typically 0.2mm. Why use ISO 2768-mk?