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Suitable assembly method shall be selected between shrink fit and press fit.
Interference fit formula. In the press fit case assembly operation is done with large amount of forces. Lets look at the interference fit. The standard fit cannot exceed limits for maximum and minimum interference. It is used in non mating assemblies like bearing bushes fitted into the bearing housing key fitted into the keyway etc.
1 the value of the diametrical interference is typically about dd0001. Lets look at the interference fit. Transition fit is of two kinds namely push fit and light keying fits. According to the transition fit in all the 4 cases interference is required.
Transition fits are a compromise between clearance and interference fit where a small amount of either clearance or interference is permissible. An interference fit also known as a press fit or friction fit is a form of fastening between two tight fitting mating parts that produces a joint which is held together by friction after the parts are pushed together. Joint pressure in the friction surface is necessary for the torque force transmission and this pressure is generated by the deformation of shaft and hub. The maximum and minimum interference intended for another calculation part is determined from the selected fit.
That is sometimes the shaft is slightly larger than the hole and sometimes slightly smaller than the hole.
