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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Textbook Question
Chapter 7, Problem 40P
A ball bearing has been selected with the bore size specified in the catalog as 35.000 mm to 35.020 mm. Specify appropriate minimum and maximum shaft diameters to provide a locational interference fit.
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The design load on a ball bearing is 413 lbf and an application factor of 1.2 is appro-
priate. The speed of the shaft is to be 300 rev/min, the life to be 30 kh with a reliability
of 0.99. What is the C10 catalog entry to be sought (or exceeded) when searching for a
deep-groove bearing in a manufacturer's catalog on the basis of 106 revolutions for rat-
ing life? The Weibull parameters are xo = 0.02, (0 – xo) = 4.439, and b = 1.483.
%3D
a. The following illustration shows the shaft and housing fits for a bearing system. The bottom half
of the chart is the shaft fit section and the top half is the housing fits for bearing.
Explain this illustration (What this illustration is trying to convey?). discuss (these blocks, F, G,
H,..etc) What does these blocks represent? On what basis should you select clearance or
interference fit for a bearing? Why is it important?
For illustration only
Ier Ring
Oue Ring
Bere Dameter
Housing
Bearing
MMIMT
Outer ring
tolerance
Clearae
Tratn
Terferene
Clece
Tioe
fesne ft
Inner ring
tolerance
Shaft
Consider that fit between the shaft and the disk is of transition type where the maximum interference is required to be 0,013 mm. Nominal diameter of the shaft is 65 mm. The hole in the disk is machined to IT quality of 7. tolerence on the fit is 0.050 mm. Using the basic shaft system, determine the nearest fit from ISO tables.
Chapter 7 Solutions
Shigley's Mechanical Engineering Design (McGraw-Hill Series in Mechanical Engineering)
Ch. 7 - A shaft is loaded in bending and torsion such that...Ch. 7 - The section of shaft shown in the figure is to be...Ch. 7 - The rotating solid steel shaft is simply supported...Ch. 7 - A geared industrial roll shown in the figure is...Ch. 7 - Design a shaft for the situation of the industrial...Ch. 7 - The figure shows a proposed design for the...Ch. 7 - For the problem specified in the table, build upon...Ch. 7 - Prob. 8PCh. 7 - For the problem specified in the table, build upon...Ch. 7 - For the problem specified in the table, build upon...
Ch. 7 - In the figure is a proposed shaft design to be...Ch. 7 - The shaft shown in the figure is proposed for the...Ch. 7 - Prob. 20PCh. 7 - The shaft shown in the figure is proposed for the...Ch. 7 - Prob. 25PCh. 7 - Prob. 26PCh. 7 - Prob. 27PCh. 7 - A 25-mm-diameter uniform steel shaft is 600 mm...Ch. 7 - Prob. 29PCh. 7 - Compare Eq. (727) for the angular frequency of a...Ch. 7 - Prob. 31PCh. 7 - The steel shaft shown in the figure carries a...Ch. 7 - A transverse drilled and reamed hole can be used...Ch. 7 - Prob. 34PCh. 7 - The shaft shown in Prob. 721 is proposed for the...Ch. 7 - A guide pin is required to align the assembly of a...Ch. 7 - Prob. 37PCh. 7 - Prob. 38PCh. 7 - Prob. 39PCh. 7 - A ball bearing has been selected with the bore...Ch. 7 - Prob. 41PCh. 7 - A gear and shaft with nominal diameter of 35 mm...
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- 10. The design life of a bearing used in a shaft of an industrial blower is around 20,000 h. How many number of revolutions is this equal to if the shaft rotates at 600 rpm? 3 x 108 6 x 108 4 x 108 7 x 108 a. b. 11. For a D/d ratio of 1.5, which combination of fillet radius and smaller shaft diameter will you consider it as a well rounded fillet? 0.4 and 20.0 b. 2 and 10.5 a. b. C. d. 12. Which combination of sheave diameters and center of less than 9.5 inches? 2, 8, 10 2.5, 10, 10 C. d. c. d. 3.0 and 100 both b and c distance results in a length of span between two sheaves 4, 10, 10 Answer is not among the choicesarrow_forwardA power transmission shaft is to carry a steady 30 horsepower while rotating at 1000 rpm. Specify a suitable diameter for the solid circular shaft if it is to be made from AISI 1020 cold-drawn steel. Use Appendix A-2 for preferred size.arrow_forwardThe load on an electric-motor bearing is 350 lb., radial; 16 hr. service, n = 1200 rpm; compressor drive; inner race stationary. Decide upon a deep groove ball bearing, giving its significant dimensions. Then compute the selected bearing’s 90 % life, and the probable percentage of failures that would occur during the design life. What is the approximate median life of this bearing?arrow_forward
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BEARINGS BASICS and Bearing Life for Mechanical Design in 10 Minutes!; Author: Less Boring Lectures;https://www.youtube.com/watch?v=aU4CVZo3wgk;License: Standard Youtube License