Iso tolerance f8

A lower case letters apply to shafts or male type features. Upper case letters apply to holes or female type features. A feature tolerance is defined by the basic size followed by the tolerance designation.

Note: Hole based fits should be preferred. How to interpret the bar representation. ISO Tolerance zone calculator Usage The calculator application page is divided into 3 windows Calculator window Basic size calculations and results Reference table window Selection of range and tolerance Filter for the tolerances displayed in the table window Selection of the tolerances displayed in the reference table Basic usage flow Enter basic dimension into the top most text field Find appropriate range; Click find range button or step through the ranges using next and previous range button in the reference table window select Hole and Shaft class using radio buttons to the left and right in "reference table window" if the tolerance does not appear in the "reference table window".

A " Warning: incorrect range " message will appear below the result Calculated Shaft dimension - Displays the resulting dimensions of the basic size with the selected Shaft tolerance applied - If the Shaft class was selected from an inappropriate table.

Privacy policy Disclaimer TheoreticalMachinist. Dimensions are in: mm in. Decimal precision: 3 4 5. Find Range. Loose running fit for wide commercial tolerances or allowances on external members. Free running fit not for use where accuracy is essential, but good for large temperature variations, high running speeds, or heavy journal pressures.

Close running fit for running on accurate machines and for accurate location at moderate speeds and journal pressures. Sliding fit not intended to run freely, but to move and turn freely and locate accurately. Locational clearance fit provides snug fit for locating stationary parts; but can be freely assembled and disassembled. Transition Fits. Locational transition fit for accurate location, a compromise between clearance and interference. Locational transition fit for more accurate location where greater interference is permissible.

Interference Fits. Locational interference fit for parts requiring rigidity and alignment with prime accuracy of location but without special bore pressure requirements. Medium drive fit for ordinary steel parts or shrink fits on light sections, the tightest fit usable with cast iron.