The Theory of Shrinkage and Forced Fits

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Excerpt from The Theory of Shrinkage and Forced Fits: With Tabulated Data and Examples From PracticeA shrinkage fit is a cylindrical or slightly conical joint between two machine members, as a crank-web and a shaft, in which the bore of the outer member or crank is smaller than the diameter of the inner member or shaft, so that the outer member must be expanded by heat before it can be set in place, while, in the subsequent cooling, it con tracts and grips the inner member with a force which depends on the character of the' metals, on the thickness of the outer member, and on the difference between the original diameter of the bore and that of the inner member. This difference is called the allowance for shrinkage. A forced fit is based on the same principle and is virtually of the same character, except that the parts are forced together when cold by hydraulic or other pressure.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.