ISO Tolerance is an application that brings ISO Hole Basis Tolerance charts to your iPhone.
Based on ISO ,the application allows users to enter a nominal diameter for hole or shaft, select the tolerance grade using a simple selector, and reveal the upper and lower tolerances based on the selected grade.
The application calculates tolerances for nominal diameters between 0 and mm in metric mode.
The application calculates tolerances for nominal diameters between 0 and inches in imperial mode.
Tolerance grades range from "A" to "ZC" for holes, and "a" to "zc" for shafts.
Additional functionality of ISO tolerances.
Users can now find tolerances for Linear dimensions, Chamfers and Radii, Angles, Straightness, Flatness, Perpendicularity, Symmetry, and run out as defined in ISO table 1 and table 2.
The app contains a limits and fits calculator for easily seeing which combination of tolerances offer clearance, transition or interference fits.
Ideal for CNC Machinists, Manual Machinists, Inspectors, Designers, Draughtsmen and Students wishing to dispense with tolerance charts and books, bringing the convenience of all the information direct to the iPhone.
Updated the App for IOS13
Added an ISO fits function, which allows users to conveniently check for clearance, transition or interference fits.
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Basitleştirilmiş Çince, İngilizce
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Acc. to ISO c Acc. to DIN , rounded tol. Simplified version of the ISO v
Tolerance
Base dimension (mm) Tolerance (mm) Bending radius (mm) Bending radius Base dimension (mm) Tolerance (°)
(mm)
≤3 ± 0,2 ≤3 ± 0,2 ≤ 10 ±3
˃3–6 ± 0,3 ˃3–6 ± 0,3 ˃ 10 – 50 ±2
˃ 6 – 30 ± 0,5 ˃ 6 – 30 ±1 ˃ 50 ±1
˃ 30 – ± 0,8 ˃ 30 – 60 ±2
˃ – ± 1,2 ˃ 60 – ±4
˃ - ±2 ˃ - ± 10
Quality factor, Q= 0,33 Base dimension= The shortest leg length