Why are the tolerance characteristics categorized as forced fitting and loose can't represent shape and position tolerance?

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Mechanical Engineering

Why are the tolerance characteristics categorized asforced
fitting and loose can't represent shape and position tolerance?

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3.8 Ratings (772 Votes)

Force fit suitable for parts which can be highly stressed or forshrink fits where the heavy pressing forces required areimpracticalThe different types of fits are as followsClearance Fit In this type of fit the shaft diameter is alwaysless than the hole diameter For any hole and shaft assembly ifthe upper limit size of the shaft is less than the lower limit sizeof the hole then that type of fit is known as clearance fit Shaftcan freely slide or rotate in the hole Force is not required forthis fitInterference Fit In this type of fit the minimum diameter ofthe shaft is always greater than the maximum diameter of the holeThere is no relative motion between shaft and hole Force isrequired for this fit either heating the hole or freeing theshaftTransition Fit If the maximum hole size is greater than smallersize of shaft or minimum hole size is lesser than maximum size ofshaft such type is called See Answer

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