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
Textbook Question
Chapter 11, Problem 41P
For the shaft application defined in Prob. 3-74, p. 152, perform a preliminary specification for tapered roller bearings at C and D. A bearing life of 108 revolutions is desired with a 90 percent combined reliability for the bearing set, assuming distribution data from manufacturer 1 in Table 11-6. Should the bearings be oriented with direct mounting or indirect mounting for the axial thrust to be carried by the bearing at C? Assuming bearings are available with K = 1.5, find the required radial rating for each bearing. For this preliminary design, assume an application factor of one.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
1. Select a single row, deep grove ball bearing that carries a 35 mm diameter shaft. It carries an axial load of F. -
2000 N and a radial load F, = 8000 N. Outer race rotates and a life of 5000 hours at 120 rpm is expected. Verify
your selection by a second iteration for dynamic load rating.
2. The journal bearing of a small steam turbine has length L = 50 mm and diameter D = 50 mm. It encounters a
Figure below shows a rotating shaft simply supported in ball bearings at A and D and loaded by a nonrotating
orce Fof 6.8 kN. Using ASTM "minimum" strengths, estimate the life of the part.
6T
td7 (a) Shaft drawing showing all dimensions in millimeters;
all fillets 3-mm radius. The shaft rotates and the load
is stationary; material is machined from AISI 1050
cold-drawn steel.
(b) Bending moment diagram.
A certain system like that shown in the figure has a load inertia = 102 kg-m2, a shaft inertia of Is=6 x 104 kg-m2, and a motor
inertia of Im 2 x 103 kg m. A friction torque of 1.5 N-m acts on the load. It is desired to rotate the load through two revolutions
(4 rad) in one-half second from start to stop. The load should be rotated at a constant speed for 0.6 s during the slew phase.
uired torgue, and the rms average torque.
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
- A 6-in-wide polyamide F-1 flat belt is used to connect a 4-in-diameter pulley to drive a larger pulley with an angular velocity ratio of 3. The center-to-center distance is 8 ft. The angular speed of the small pulley is 1850 rev/min as it delivers 2 hp. The service is such that a service factor Ks of 1.25 is appropriate. (a) Find Fc, Fi, F1a, and F2. (b) Find Ha, nfs, and belt length. (c) Find the dip.arrow_forward3. A flat annular steel flywheel of outer radius 0.5 m and inner radius 0.125 m with p = 7800 kN*s?/m* and v = 0.3 is to be shrunk fit around a solid steel shaft. The shrinking allowance is 0.1 mm. Both materials are the same type of steel with E = 210 GPa. Determine the RPM when the shrink fit loosens as a result of rotation.arrow_forwardDynamic load number C = 40500 N, revolution n = 840 rpm and Fr = 4500 of 6309 single row fixed radial bearing carrying N load; (a) Check and interpret whether it is selected correctly for Lh=20000 hours. (b) Calculate the dynamic load number of the bearing when the load remains the same and the life is doubled.arrow_forward
- Answer this ASAP plz A double row angular contact ball bearing is used in the engine compressor to accept radial loads of 6000 N and axial loads of 3000 N, operating at 2400 rpm for an average life of 7 years at 8 hours per day. Assume that the shock load is light. Select the appropriate bearing number. Note: the equivalent dynamic load is the dynamic equivalent radial load times the service factor.arrow_forwardA gear reduction unit uses the countershaft shown in the figure. Gear A receives power from another gear with the transmitted force FA applied at the 20 pressure angle as shown. The power is transmitted through the shaft and delivered through gear B through a transmitted force Fg at the pressure angle shown. For the steel countershaft shown below, assume the bearings have a maximum slope specification of 0.064" for good bearing life. Does the dia shown below meet the requirement? if not determine a suitable shaft diameter. 1.25-in da Gear A F₁-300- Gear B Sindia The minimum shaft diameter is in.arrow_forwardA solid constant-diameter circular shaft is subjected to the torques of TA = 480 lb-ft, TB = 1060 lb-ft, Tc= 860 lb-ft, and Tp = 280 lb-ft, acting in the directions shown. The bearings shown allow the shaft to turn freely. (a) Plot a torque diagram showing the internal torque in segments (1), (2), and (3) of the shaft. Use the sign convention presented in %D Section 6.6. (b) If the allowable shear stress in the shaft is 5800 psi, what is the minimum acceptable diameter for the shaft? TB TA Tc (1) Tp (3) В C D Answer: (a) T1 = Ib-ft T2 = Ib-ft T3 = Ib-ft (b) d = in.arrow_forward
- Use the general shaft layout given and determine critical diameters of the shaft based on infinite fatigue life with a design factor of 1.5. Check for yielding. Check the slopes at the bearings for satisfaction of the recommended limits in Table 7-2. Assume that the deflections for the pulleys are not likely to be critical. 500 lbf 75 lbf 8-in dia. Bearing at O 500 lb d 10.0" 75 lb Material 1040 Q and T 18 in Use the following shaft layout assuming a pulley transmits torque through a key and keyseat at location A to another pulley at location B. Assume the tensions in the belt at pulley B are T₁ and T2, where T₁ is 15% of T2. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. 10-in dia. 12 in T₂ T₁ The mean torque is 0 lb-in. The alternating torque is 2125 lb-in. The mean moment is 0 lb-in. The alternating moment is 5000 lb-in. 18.0" pulley diameter = 8.0" Sut 113 kpsi 10.0 B T2 T1 pulley diameter = 10.0" Sy 86 kpsi 12.0"…arrow_forwardThe reducer input shaft shown in the figure is tapered It transmits moment with the help of a gear wheel. On the spindle, Fa = 552 N, Fr = 457 N, Ft = 1960 N from gear forces and belt mechanism incoming Fk = 2600 N radial force impact . The shaft rotates with n = 1090 rpm. Accept the shaft diameter in the A bearing as dA = 35 mm. Fixed ball suitable for Lh = 13500 h select bearing.arrow_forward3. Determine the principal dimensions of a cone faced with leather to transmit 30 kW at 750 rpm from an electric motor to an air compressor. Sketch a sectional front view of the clutch and provide the main dimensions on the sketch. Assume: semi-angle of the cone = 12 1/2°; f = 0.2; mean diameter of cone = 6 to 10d where d is the diameter of shaft; allowable normal pressure for leather and cast iron = 0.075 to 0.1 N/mm²; load factor = 1.75 and mean diameter to face width ratio = 6.arrow_forward
- A punching press is driven by provided with a flywheel that rotates at a maximum speed of 225 rpm. Radius of gyration of the flywheel is 0.5 m. The press punches 720 holes per hour, each punching operation takes 2 seconds and requires 15 kNm of energy. Find the motor power required and cross section of the flywheel if the speed of the same must not fall below 200 rpm. The flywheel has a rectangular cross section with width equal to three times the thickness. Density of flywheel material is 5400 kg/m³ constant torque electric motor. The press isarrow_forwardWrite legibly, provide manual step by step solution, and diagram for below given problem. A 2.5 in diameter 10 spline shaft ( d= 0.86D, w= 0.156D, h= 0.07D ) to slide when not under load has a compressive force of 2500 lb. Find the torque applied if hub length is 1 1/2 in. Ans. 2906.25 in-lbarrow_forwardFor the free body diagram of the shaft shown below, the rolling contact bearings are located at A and C. For the bearing at A, the desired design load for the bearing is Tangential Direction for Gear Y-X axes: Radial Direction for Gear Z-X axes: 1000 Ibf 500 Ibf A A В 500 Ibf 500 Ibf 250 Ibf 250 Ibfarrow_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 PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering 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
Mechanical Design (Machine Design) Clutches, Brakes and Flywheels Intro (S20 ME470 Class 15); Author: Professor Ted Diehl;https://www.youtube.com/watch?v=eMvbePrsT34;License: Standard Youtube License