Download Clutches and Brakes - Design and Selection by William C. Orthwein PDF

By William C. Orthwein

With ease amassing a variety of formulation, analytical tools, and graphs for the layout and choice of a wide selection of brakes and clutches within the car, plane, farming, and production industries, this convenient reference simplifies calculations, acquaints engineers with an expansive diversity of purposes, and assists within the number of parameters for particular layout demanding situations.

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Extra info for Clutches and Brakes - Design and Selection

Sample text

Band Brakes 27 FIGURE 6 Positive discharge bucket conveyor cutaway and cross section. ) Copyright © 2004 Marcel Dekker, Inc. , and design for a wrap angle, a, of 300j. From the sprocket pitch diameter and the bucket weights, find T ¼ ðds =2ÞWN ¼ ð34=2Þ129ð41Þ ¼ 89; 913 in:-lb as the maximum expected value of the torque. Here W denotes the expected maximum weight of material in a bucket and N denotes the number of buckets one each side. Chain and empty bucket weights were ignored because the chain and empty bucket assembly is in equilibrium due to the symmetry of the conveyor system about its vertical axis.

Encyclopedia of Composite Materials and Components. New York: Wiley, pp. 188–221. Copyright © 2004 Marcel Dekker, Inc. 2 Band Brakes Band brakes are simpler and less expensive than most other braking devices, with shoe brakes, as perhaps their nearest rival. Because of their simplicity, they may be produced easily by most equipment manufacturers without having to purchase special equipment and without having to use foundry or forging facilities. Only the lining must be purchased from outside sources.

Many manufacturers of entirely or partially proprietary linings provide data on the nominal friction coefficients, wear, and recommended temperature ranges of their products, although a few will supply data only to a manufacturing customer. This data may be in either tabular or graphical form. Typical tabular data for dry lining materials may be similar to that shown in Table 2, and typical data for wet (oil, transmission fluid) lining materials may be similar to that shown in Table 3 for two different lining materials.

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