Excerpt from Bearings and Bearing Metals Few subjects related to the design or construction of ma chinery are of greater importance than the subject of bear ings. All classes of mechanisms have bearings of some kind and bearings that are properly designed and con structed are a necessity. As every experienced mechanic knows, a poor hearing may tie up a machine or even cause an entire plant to shut down temporarily. 'owing to the importance of this subject, designers and mechanics in general should understand the fundamental principles gov erning bearing design and should know what approved types are in common use on different classes of machinery. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This 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.