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
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 11, Problem 14P
A countershaft carrying two V-belt pulleys is shown in the figure. Pulley A receives power from a motor through a belt with the belt tensions shown. The power is transmitted through the shaft and delivered to the belt on pulley B. Assume the belt tension on the loose side at B is 15 percent of the tension on the tight side.
11-14* to 11-17* For the problem specified in the table, build upon the results of the original problem to obtain a Basic Load Rating for a ball bearing at C with a 95 percent reliability, assuming distribution data from manufacturer 2 in Table 11-6. The shaft rotates at 1200 rev/min, and the desired bearing life is 15 kh. Use an application factor of 1.2.
| Problem Number | Original Problem, Page Number |
| 11-14* | 3-68, 151 |
| 11-15* | 3-69, 151 |
| 11-16* | 3-70, 151 |
| 11-17* | 3-71, 151 |
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
10-23
Problem 10-23
Clamping fixture.
A holding fixture for a workpiece 37.5 mm thick at the clamp locations is being designed. The
detail of one of the clamps is shown in the figure. A spring is required to drive the clamp
upward when removing the workpiece with a starting force of 45 N. The clamp screw has an
M10 X 1.25 thread. Allow a diametral clearance of 1.25 mm between it and the uncompressed
spring. It is further specified that the free length of the spring should be Lo ≤ 48 mm, the solid
height L, 31.5 mm, and the safety factor when closed solid should be n, 1.2. Starting with
d = 2 mm, design a suitable helical coil compression spring for this fixture. For A227 HD
steel, wire diameters are available in 0.2-mm increments between 0.2 to 3.2 mm.
Clamp screw
Spherical washer
Slot
Workpiece
Clamp
Groove
Pin
Given:
Correction factor f = 0.92,
load factor k = 1.2
V-belt profile bxh = 20x12,
H = 0.25
For pulleys d01 = 167 mm,
d02 = 668 mm
Efficiency for belt-pulley
n1 = 0.91
Total efficiency for
gearbox nmin = 0.95
belt-pulley system is (a) 650 mm, using
the figure given according to the belt
speed and belt width and using the
following data;
Q1. Find the forces in the
stretched and loose belt
arms.
The figure 1 shows a pulley assembly that consists of a shaft supported by two bearings and driven by a motor on the righthand side (not shown in the figure). The shaft diameter is 100mm. The pulley consists of two disks, each disk is 15 mm thick and has an outer diameter of 620mm, that are connected by means of a cylindrical shell. The length of the shell is 500mm, the outer diameter of the shell is 600mm, and the thickness of the shell is 15mm. The pulley drives a belt that places a uniformly distributed load on the shell (of 100000N) as shown in the diagram. The belt lifts a load that applies a torque of 6000Nm to the pulley. The shell and the plates are connected. A 6mm fillet should be applied to all the 90 degree corners between the shaft and the plates and between the shell and the plates.
The deflection of the shaft
Chapter 11 Solutions
Shigley's Mechanical Engineering Design (McGraw-Hill Series in Mechanical Engineering)
Ch. 11 - Manufacturer Rating Life, Revolutions Weibull...Ch. 11 - Manufacturer Rating Life, Revolutions Weibull...Ch. 11 - Manufacturer Rating Life, Revolutions Weibull...Ch. 11 - Problems 112 and 113 raise the question of the...Ch. 11 - Prob. 5PCh. 11 - Manufacturer Rating Life, Revolutions Weibull...Ch. 11 - Two ball bearings from different manufacturers are...Ch. 11 - 11-8 to 11-13 For the bearing application...Ch. 11 - 11-8 to 11-13 For the bearing application...Ch. 11 - 11-8 to 11-13 For the bearing application...
Ch. 11 - 11-8 to 11-13 For the bearing application...Ch. 11 - 11-8 to 11-13 For the bearing application...Ch. 11 - 11-8 to 11-13 For the bearing application...Ch. 11 - A countershaft carrying two V-belt pulleys is...Ch. 11 - A countershaft carrying two V-belt pulleys is...Ch. 11 - A countershaft carrying two V-belt pulleys is...Ch. 11 - A countershaft carrying two V-belt pulleys is...Ch. 11 - For the shaft application defined in Prob. 3-77,...Ch. 11 - For the shaft application defined in Prob. 3-79,...Ch. 11 - An 02-series single-row deep-groove ball bearing...Ch. 11 - An 02-series single-row deep-groove ball bearing...Ch. 11 - 11-22 to 11-26 An 02-series single-row deep-groove...Ch. 11 - 1122 to 1126 An 02-series single-row deep-groove...Ch. 11 - 1122 to 1126 An 02-series single-row deep-groove...Ch. 11 - 1122 to 1126 An 02-series single-row deep-groove...Ch. 11 - 1122 to 1126 An 02-series single-row deep-groove...Ch. 11 - The shaft shown in the figure is proposed as a...Ch. 11 - Repeat the requirements of Prob. 11-27 for the...Ch. 11 - The shaft shown in the figure is proposed as a...Ch. 11 - Repeat the requirements of Prob. 11-29 for the...Ch. 11 - Shown in the figure is a gear-driven squeeze roll...Ch. 11 - The figure shown is a geared countershaft with an...Ch. 11 - The figure is a schematic drawing of a...Ch. 11 - A gear-reduction unit uses the countershaft...Ch. 11 - The worm shaft shown in part a of the figure...Ch. 11 - In bearings tested at 2000 rev/min with a steady...Ch. 11 - A 16-tooth pinion drives the double-reduction...Ch. 11 - Estimate the remaining life in revolutions of an...Ch. 11 - The same 02-30 angular-contact ball bearing as in...Ch. 11 - A countershaft is supported by two tapered roller...Ch. 11 - For the shaft application defined in Prob. 3-74,...Ch. 11 - For the shaft application defined in Prob. 3-76,...Ch. 11 - Prob. 43PCh. 11 - The gear-reduction unit shown has a gear that is...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- The figure 1 shows a pulley assembly that consists of a shaft supported by two bearings and driven by a motor on the righthand side (not shown in the figure). The shaft diameter is 100mm. The pulley consists of two disks, each disk is 15 mm thick and has an outer diameter of 620mm, that are connected by means of a cylindrical shell. The length of the shell is 500mm, the outer diameter of the shell is 600mm, and the thickness of the shell is 15mm. The pulley drives a belt that places a uniformly distributed load on the shell (of 100000N) as shown in the diagram. The belt lifts a load that applies a torque of 6000Nm to the pulley. The shell and the plates are connected. A 6mm fillet should be applied to all the 90 degree corners between the shaft and the plates and between the shell and the plates. Apply the boundary conditions and the forces and torques to the system and determine the following: Calculate the highest Principal stresses in the system ?arrow_forwardThe figure 1 shows a pulley assembly that consists of a shaft supported by two bearings and driven by a motor on the righthand side (not shown in the figure). The shaft diameter is 100mm. The pulley consists of two disks, each disk is 15 mm thick and has an outer diameter of 620mm, that are connected by means of a cylindrical shell. The length of the shell is 500mm, the outer diameter of the shell is 600mm, and the thickness of the shell is 15mm. The pulley drives a belt that places a uniformly distributed load on the shell (of 100000N) as shown in the diagram. The belt lifts a load that applies a torque of 6000Nm to the pulley. The shell and the plates are connected. A 6mm fillet should be applied to all the 90 degree corners between the shaft and the plates and between the shell and the plates. The highest stress in the systemarrow_forwardA countershaft carrying two V-belt pulleys is shown in the figure. Pulley A receives power from a motor through a belt with the belt tensions shown. The power is transmitted through the shaft and delivered to the belt on pulley B. Assume the belt tension on the loose side at B is 15 percent of the tension on the tight side.arrow_forward
- For nos. 21-23, satisfy the conditions of the given problem below: As an airplane's brakes are applied, the nose wheel exerts two forces on the end of the landing gear as shown in the figure 1. Determine: 21. the force in the strut AB. * 1 point 30° 450 lb. 1350 lb O A. 215.3 lb B. 224.4 lb C. 233. 2 lb D. 234.3 lb 1 ft 2 ftarrow_forwardFor nos. 21-23, satisfy the conditions of the given problem below: As an airplane's brakes are applied, the nose wheel exerts two forces on the end of the landing gear as shown in the figure 1. Determine: 21. the force in the strut AB. * 1 ft -20% 2 ft 1350 lb 30% 450 lb. A. 215.3 lb B.224.4 lb C. 233, 2 lb D. 234.3 lb Option 5 22. the horizontal component at the pin C. * A. 628.6 lb B. 627.8 lb C. 634.4 lb D. 652.3 lb 23. the vertical component at the pin C. A. 1468 lb B. 1485 lb C. 1500 lb D. 1526 lbarrow_forwardA gear-reduction unit uses the countershaft depicted in the figure. Find the two bearing reactions.The bearings are to be angular-contact ball bearings, having a desired life of 60 kh when used at 330 rev/min. Use 1.2 for the application factor and a reliability goal for the bearing pair of 0.92arrow_forward
- The degree of freedom of the geared five bar mechanism as shown in figure isarrow_forwardDetermine the degree of freedom (F) of the mechanism using the general degree of freedom equation. Write down the number of limbs on the figure. Also, specify the number of joints and the degree of freedom of each marshall. b) Determine the number of common (j1) and high (j2) pairs and show them on the figure. (c) Determine the degree of freedom using Kutzbach's criterion. Does this criterion provide the correct answer for this mechanism? Briefly explain why or why not.arrow_forwardIn the figure below, a motor with power 150kw and speed of 2500 rpm is connected to shaft 1(by coupling) in a clockwise direction. Shaft 2 is connected to shaft 1 by gears 1 and 2. If 30% of the power is consumed by the gear3 and 9% by the pulley and 61% by the sprocket, draw torque diagrams for both shafts. If the pressure angle of the gears is 20 degrees to the x-axis, Calculate the reaction forces of the bearings and draw the bending moment diagrams for both shafts according to the information below: Lengths: AB=90mm/BC=DGH=50mm/CD=HI=60mm/DE=IJ=80mm Diameters: dG1=dG2=47mm/ dG3=20mm/ d(pulley)=35mm/d(sprocket)=40mm Gears Gear2 Tew) shaftz Bearing Shaft Gear1 SProcketarrow_forward
- The pedal system shown in the figure is exerted by both an up and down mechanism. These forces are Fmax=350*SN/10 N, Fmin=-150*SN/10 N. It is desired that h/b = 5 seen in the figure. This piece is AISI 1040 and has a maximum tensile stress of 670Mpa and a yield stress of 540Mpa. Known weakening factors are known as kb=ky=kd=0.8. The notch factor for all stresses is assumed to be Kç=1.5. It is desired to last up to its minimum indefinite life at the cross-section measurement point (bxh) shown in the figure. According to Goodman theory, what should be the minimum size (b and h value) of this section in order to meet this condition. SN=89arrow_forwardRequired information A countershaft carrying two V-belt pulleys is shown in the figure. Pulley A receives power from a motor through a belt with the belt tensions shown. The power is transmitted through the shaft and delivered to the belt on pulley B. Assume the belt tension on the loose side at B is 15 percent of the tension on the tight side. Given: B(dB) = 205 mm, T(A) = 1880 N, and T(A2) = 282 N. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. B(dB) 230 mm T₂ G 30-mm dia. 100 400-mm dia. T(A₁) 280 mm The bending stress at the point of maximum bending moment is At the point of maximum bending moment, determine the bending stress and the torsional shear stress. The torsional shear stress at the point of maximum bending moment is 300 mm MPa. T(A₂) MPa.arrow_forwardThe machine is designed to be powered by a 100 HP electric motor at a speed of 1500 rpm, with standard D-120 V-belts. The pitch diameter of the smaller sheave is 101.6 mm and the bigger sheave is 406.4 mm. Service factor is 1.25. Use length of D-120 V-belt equal to 123.3 inches. Determine the center distance between sheaves in mm; the arc of contact in deg; and the design in HP.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University Press
Mechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSON
Thermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEY
Mechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage Learning
Engineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY
Elements Of Electromagnetics
Mechanical Engineering
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:9780134319650
Author:Russell C. Hibbeler
Publisher:PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:9781259822674
Author:Yunus A. Cengel Dr., Michael A. Boles
Publisher:McGraw-Hill Education
Control Systems Engineering
Mechanical Engineering
ISBN:9781118170519
Author:Norman S. Nise
Publisher:WILEY
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Cengage Learning
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:9781118807330
Author:James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:WILEY
Engineering Basics - Statics & Forces in Equilibrium; Author: Solid Solutions - Professional Design Solutions;https://www.youtube.com/watch?v=dQBvQ2hJZFg;License: Standard YouTube License, CC-BY