Shigley's Mechanical Engineering Design (McGraw-Hill Series in Mechanical Engineering)
10th Edition
ISBN: 9780073398204
Author: Richard G Budynas, Keith J Nisbett
Publisher: McGraw-Hill Education
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Chapter 17, Problem 14P
To determine
The design of a friction belt drive.
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A flat open belt drive is used to transmit a power of 25kW from a motor shaft rotating at 950 rpm. The radius of the pulley of the motor shaft is 125mm while the radius of the puller of the driven shaft is 450mm. The center distance between the shafts is 2,250mm. the coefficient of friction is 0.25 and the density of the belt material is 950 kg/m^3. The belt width is 126 mm. The allowable stress is 2.6MPa. Determine the thickness of the belt.
A blower is driven by an electric motor though a belt drive. The motor runs at 750 r.p.m. For this
power transmission, a flat belt of 8 mm thickness and 250 mm width is used. The diameter of the
motor pulley is 350 mm and that of the blower pulley 1350 mm. The center distance between these
pulleys is 1350 mm and an open belt configuration is adopted. The pulleys are made out of cast
iron. The frictional coefficient between the belt and pulley is 0.35 and the permissible stress for the
belt material can be taken as 2.5 N/mm2 with sufficient factor of safety. The mass of a belt is 2 kg
per meter length. Find the maximum power transmitted without belt slipping in any one of the
pulleys.
A blower is driven by an electric motor though a belt drive. The motor runs at 750 r.p.m. For this
power transmission, a flat belt of 8 mm thickness and 250 mm width is used. The diameter of the
motor pulley is 350 mm and that of the blower pulley 1350 mm. The center distance between these
pulleys is 1350 mm and an open belt configuration is adopted. The pulleys are made out of cast
iron. The frictional coefficient between the belt and pulley is 0.35 and the permissible stress for the
belt material can be taken as 2.5 N/mm2 with sufficient factor of safety. The mass of a belt is 2 kg
per meter length. Find the maximum power transmitted without belt slipping in any one of the
pulleys.
Note: Sketch the belt drive system for both parts and label the given data on it.
Chapter 17 Solutions
Shigley's Mechanical Engineering Design (McGraw-Hill Series in Mechanical Engineering)
Ch. 17 - Example 17-2 resulted in selection of a 10-in-wide...Ch. 17 - A 6-in-widc polyamide F-l flat belt is used to...Ch. 17 - Prob. 3PCh. 17 - A flat-belt drive is to consist of two...Ch. 17 - In solving problems and examining examples, you...Ch. 17 - Return to Ex. 17-1 and complete the following. (a)...Ch. 17 - Prob. 7PCh. 17 - Prob. 8PCh. 17 - Prob. 9PCh. 17 - Two shafts 20 ft apart, with axes in the same...
Ch. 17 - Prob. 11PCh. 17 - Prob. 12PCh. 17 - A designer has to select a metal-belt drive to...Ch. 17 - Prob. 14PCh. 17 - Prob. 15PCh. 17 - Prob. 16PCh. 17 - Prob. 17PCh. 17 - Two B85 V belts are used in a drive composed of a...Ch. 17 - Prob. 19PCh. 17 - Prob. 20PCh. 17 - The geometric implications of a V-flat drive are...Ch. 17 - A 2-hp electric motor running at 1720 rev/min is...Ch. 17 - The standard roller-chain number indicates the...Ch. 17 - Prob. 24PCh. 17 - A double-strand no. 60 roller chain is used to...Ch. 17 - A four-strand no. 40 roller chain transmits power...Ch. 17 - Prob. 27PCh. 17 - Prob. 28PCh. 17 - Prob. 29PCh. 17 - Prob. 30PCh. 17 - Prob. 31PCh. 17 - Prob. 32PCh. 17 - Prob. 33PCh. 17 - For Prob. 17-29 estimate the elongation of the...
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