Mechanical Engineering Design 10th Edition solutions

Mechanical Engineering Design 10
A certain application requires a ball bearing with the inner ring rotating, with a design life of 25 kh at a speed of 350 rev/min. The radial load is 2.5 kN and an application factor of 1.2 is appropriate. The reliability goal is 0.90. Find the multiple of rating life required, xD, and the catalog ra

Mechanical Engineering Design 10
A certain application requires a ball bearing with the inner ring rotating, with a design life of 25 kh at a speed of 350 rev/min. The radial load is 2.5 kN and an application factor of 1.2 is appropriate. The reliability goal is 0.90. Find the multiple of rating life required, \(x_D\), and the catal

Mechanical Engineering Design 10
An angular-contact, inner ring rotating, 02-series ball bearing is required for an application in which the life requirement is 40 kh at 520 rev/min. The design radial load is 725 lbf. The application factor is 1.4. The reliability goal is 0.90. Find the multiple of rating life xD required and the ca

Mechanical Engineering Design 10
An angular-contact, inner ring rotating, 02-series ball bearing is required for an application in which the life requirement is 40 kh at 520 rev/min. The design radial load is 725 lbf. The application factor is 1.4. The reliability goal is 0.90. Find the multiple of rating life \(x_D\) required and t

Mechanical Engineering Design 10
The other bearing on the shaft of Prob. 112 is to be a 03-series cylindrical roller bearing with inner ring rotating. For a 2235-lbf radial load, find the catalog rating C10 with which to enter Table 113. The reliability goal is 0.90. Choose a bearing and estimate its reliability in use.

Mechanical Engineering Design 10
The other bearing on the shaft of Prob. 112 is to be a 03-series cylindrical roller bearing with inner ring rotating. For a 2235-lbf radial load, find the catalog rating \(C_10\) with which to enter Table 113. The reliability goal is 0.90. Choose a bearing and estimate its reliability in use.

Mechanical Engineering Design 10
Problems 112 and 113 raise the question of the reliability of the bearing pair on the shaft. Since the combined reliabilities R is R1R2, what is the reliability of the two bearings (probability that either or both will not fail) as a result of your decisions in Probs. 112 and 113? What does this mean

Mechanical Engineering Design 10
Problems 112 and 113 raise the question of the reliability of the bearing pair on the shaft. Since the combined reliabilities R is \(R_1 R_2\), what is the reliability of the two bearings (probability that either or both will not fail) as a result of your decisions in Probs. 112 and 113? What does th

Mechanical Engineering Design 10
Combine Probs. 112 and 113 for an overall reliability of R 5 0.90. Reconsider your selections, and meet this overall reliability goal.

Mechanical Engineering Design 10
Combine Probs. 112 and 113 for an overall reliability of R = 0.90. Reconsider your selections, and meet this overall reliability goal.

Mechanical Engineering Design 10
A straight (cylindrical) roller bearing is subjected to a radial load of 20 kN. The life is to be 8000 h at a speed of 950 rev/min and exhibit a reliability of 0.95. What basic load rating should be used in selecting the bearing from a catalog of manufacturer 2 in Table 116?

Mechanical Engineering Design 10
A straight (cylindrical) roller bearing is subjected to a radial load of 20 kN. The life is to be 8000 h at a speed of 950 rev/min and exhibit a reliability of 0.95. What basic load rating should be used in selecting the bearing from a catalog of manufacturer 2 in Table 116?

Mechanical Engineering Design 10
Two ball bearings from different manufacturers are being considered for a certain application. Bearing A has a catalog rating of 2.0 kN based on a catalog rating system of 3 000 hours at

Mechanical Engineering Design 10
Two ball bearings from different manufacturers are being considered for a certain application. Bearing A has a catalog rating of 2.0 kN based on a catalog rating system of 3 000 hours at 500 rev/min. Bearing B has a catalog rating of 7.0 kN based on a catalog that rates at \(10^6\) cycles. For a give

Mechanical Engineering Design 10
For the bearing application specifications given in the table for the assigned problem, determine the Basic Load Rating for a ball bearing with which to enter a bearing catalog of manufacturer 2 in Table 116. Assume an application factor of one.

Mechanical Engineering Design 10
For the bearing application specifications given in the table for the assigned problem, determine the Basic Load Rating for a ball bearing with which to enter a bearing catalog of manufacturer 2 in Table 116. Assume an application factor of one. Problem Number Radial Load Design Life Desired R

Mechanical Engineering Design 10
For the bearing application specifications given in the table for the assigned problem, determine the Basic Load Rating for a ball bearing with which to enter a bearing catalog of manufacturer 2 in Table 116. Assume an application factor of one.

Mechanical Engineering Design 10
For the bearing application specifications given in the table for the assigned problem, determine the Basic Load Rating for a ball bearing with which to enter a bearing catalog of manufacturer 2 in Table 116. Assume an application factor of one. Problem Number Radial Load Design Life Desired R

Mechanical Engineering Design 10
For the bearing application specifications given in the table for the assigned problem, determine the Basic Load Rating for a ball bearing with which to enter a bearing catalog of manufacturer 2 in Table 116. Assume an application factor of one.

Mechanical Engineering Design 10
For the bearing application specifications given in the table for the assigned problem, determine the Basic Load Rating for a ball bearing with which to enter a bearing catalog of manufacturer 2 in Table 116. Assume an application factor of one. Problem Number Radial Load Design Life Desired R

Mechanical Engineering Design 10
For the bearing application specifications given in the table for the assigned problem, determine the Basic Load Rating for a ball bearing with which to enter a bearing catalog of manufacturer 2 in Table 116. Assume an application factor of one.

Mechanical Engineering Design 10
For the bearing application specifications given in the table for the assigned problem, determine the Basic Load Rating for a ball bearing with which to enter a bearing catalog of manufacturer 2 in Table 116. Assume an application factor of one. Problem Number Radial Load Design Life Desired R

Mechanical Engineering Design 10
For the bearing application specifications given in the table for the assigned problem, determine the Basic Load Rating for a ball bearing with which to enter a bearing catalog of manufacturer 2 in Table 116. Assume an application factor of one.

Mechanical Engineering Design 10
For the bearing application specifications given in the table for the assigned problem, determine the Basic Load Rating for a ball bearing with which to enter a bearing catalog of manufacturer 2 in Table 116. Assume an application factor of one. Problem Number Radial Load Design Life Desired R

Mechanical Engineering Design 10
For the bearing application specifications given in the table for the assigned problem, determine the Basic Load Rating for a ball bearing with which to enter a bearing catalog of manufacturer 2 in Table 116. Assume an application factor of one.

Mechanical Engineering Design 10
For the bearing application specifications given in the table for the assigned problem, determine the Basic Load Rating for a ball bearing with which to enter a bearing catalog of manufacturer 2 in Table 116. Assume an application factor of one. Problem Number Radial Load Design Life Desired R

Mechanical Engineering Design 10
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 116. The shaft rotates at 1200 rev/min, and the desired bearing life is 1

Mechanical Engineering Design 10
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 116. The shaft rotates at 1200 rev/min, and the desired bearing life is 1

Mechanical Engineering Design 10
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 116. The shaft rotates at 1200 rev/min, and the desired bearing life is 1

Mechanical Engineering Design 10
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 116. The shaft rotates at 1200 rev/min, and the desired bearing life is 1

Mechanical Engineering Design 10
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 116. The shaft rotates at 1200 rev/min, and the desired bearing life is 1

Mechanical Engineering Design 10
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 116. The shaft rotates at 1200 rev/min, and the desired bearing life is 1

Mechanical Engineering Design 10
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 116. The shaft rotates at 1200 rev/min, and the desired bearing life is 1

Mechanical Engineering Design 10
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 116. The shaft rotates at 1200 rev/min, and the desired bearing life is 1

Mechanical Engineering Design 10
For the shaft application defined in Prob. 377, p. 153, the input shaft EG is driven at a constant speed of 191 rev/min. Obtain a Basic Load Rating for a ball bearing at A for a life of 12 kh with a 95 percent reliability, assuming distribution data from manufacturer 2 in Table 116.

Mechanical Engineering Design 10
For the shaft application defined in Prob. 377, p. 153, the input shaft EG is driven at a constant speed of 191 rev/min. Obtain a Basic Load Rating for a ball bearing at A for a life of 12 kh with a 95 percent reliability, assuming distribution data from manufacturer 2 in Table 116.

Mechanical Engineering Design 10
For the shaft application defined in Prob. 379, p. 153, the input shaft EG is driven at a constant speed of 280 rev/min. Obtain a Basic Load Rating for a cylindrical roller bearing at A for a life of 14 kh with a 98 percent reliability, assuming distribution data from manufacturer 2 in Table 116.

Mechanical Engineering Design 10
For the shaft application defined in Prob. 379, p. 153, the input shaft EG is driven at a constant speed of 280 rev/min. Obtain a Basic Load Rating for a cylindrical roller bearing at A for a life of 14 kh with a 98 percent reliability, assuming distribution data from manufacturer 2 in Table 116.

Mechanical Engineering Design 10
An 02-series single-row deep-groove ball bearing with a 65-mm bore (see Tables 111 and 112 for specifications) is loaded with a 3-kN axial load and a 7-kN radial load. The outer ring rotates at 500 rev/min. (a) Determine the equivalent radial load that will be experienced by this particular bearing.

Mechanical Engineering Design 10
An 02-series single-row deep-groove ball bearing with a 65-mm bore (see Tables 111 and 112 for specifications) is loaded with a 3-kN axial load and a 7-kN radial load. The outer ring rotates at 500 rev/min. (a) Determine the equivalent radial load that will be experienced by this particular bear

Mechanical Engineering Design 10
An 02-series single-row deep-groove ball bearing with a 30-mm bore (see Tables 111 and 112 for specifications) is loaded with a 2-kN axial load and a 5-kN radial load. The inner ring rotates at 400 rev/min. (a) Determine the equivalent radial load that will be experienced by this particular bearing.

Mechanical Engineering Design 10
An 02-series single-row deep-groove ball bearing with a 30-mm bore (see Tables 111 and 112 for specifications) is loaded with a 2-kN axial load and a 5-kN radial load. The inner ring rotates at 400 rev/min. (a) Determine the equivalent radial load that will be experienced by this particular bear

Mechanical Engineering Design 10
An 02-series single-row deep-groove ball bearing is to be selected from Table 112 for the application conditions specified in the table. Assume Table 111 is applicable if needed. Specify the smallest bore size from Table 112 that can satisfy these conditions.

Mechanical Engineering Design 10
An 02-series single-row deep-groove ball bearing is to be selected from Table 112 for the application conditions specified in the table. Assume Table 111 is applicable if needed. Specify the smallest bore size from Table 112 that can satisfy these conditions. Problem Number Radial Load Axial Lo

Mechanical Engineering Design 10
An 02-series single-row deep-groove ball bearing is to be selected from Table 112 for the application conditions specified in the table. Assume Table 111 is applicable if needed. Specify the smallest bore size from Table 112 that can satisfy these conditions.

Mechanical Engineering Design 10
An 02-series single-row deep-groove ball bearing is to be selected from Table 112 for the application conditions specified in the table. Assume Table 111 is applicable if needed. Specify the smallest bore size from Table 112 that can satisfy these conditions. Problem Number Radial Load Axial Lo

Mechanical Engineering Design 10
An 02-series single-row deep-groove ball bearing is to be selected from Table 112 for the application conditions specified in the table. Assume Table 111 is applicable if needed. Specify the smallest bore size from Table 112 that can satisfy these conditions.

Mechanical Engineering Design 10
An 02-series single-row deep-groove ball bearing is to be selected from Table 112 for the application conditions specified in the table. Assume Table 111 is applicable if needed. Specify the smallest bore size from Table 112 that can satisfy these conditions. Problem Number Radial Load Axial Lo

Mechanical Engineering Design 10
An 02-series single-row deep-groove ball bearing is to be selected from Table 112 for the application conditions specified in the table. Assume Table 111 is applicable if needed. Specify the smallest bore size from Table 112 that can satisfy these conditions.

Mechanical Engineering Design 10
An 02-series single-row deep-groove ball bearing is to be selected from Table 112 for the application conditions specified in the table. Assume Table 111 is applicable if needed. Specify the smallest bore size from Table 112 that can satisfy these conditions. Problem Number Radial Load Axial Lo

Mechanical Engineering Design 10
An 02-series single-row deep-groove ball bearing is to be selected from Table 112 for the application conditions specified in the table. Assume Table 111 is applicable if needed. Specify the smallest bore size from Table 112 that can satisfy these conditions.

Mechanical Engineering Design 10
An 02-series single-row deep-groove ball bearing is to be selected from Table 112 for the application conditions specified in the table. Assume Table 111 is applicable if needed. Specify the smallest bore size from Table 112 that can satisfy these conditions. Problem Number Radial Load Axial Lo

Mechanical Engineering Design 10
The shaft shown in the figure is proposed as a preliminary design for the application defined in Prob. 372, p. 152. The effective centers of the gears for force transmission are shown. The dimensions for the bearing surfaces (indicated with cross markings) have been estimated. The shaft rotates at 12

Mechanical Engineering Design 10
The shaft shown in the figure is proposed as a preliminary design for the application defined in Prob. 372, p. 152. The effective centers of the gears for force transmission are shown. The dimensions for the bearing surfaces (indicated with cross markings) have been estimated. The shaft rotates at 12

Mechanical Engineering Design 10
Repeat the requirements of Prob. 1127 for the bearing at the left end of the shaft

Mechanical Engineering Design 10
Repeat the requirements of Prob. 1127 for the bearing at the left end of the shaft.

Mechanical Engineering Design 10
The shaft shown in the figure is proposed as a preliminary design for the application defined in Prob. 373, p. 152. The effective centers of the gears for force transmission are shown. The dimensions for the bearing surfaces (indicated with cross markings) have been estimated. The shaft rotates at 90

Mechanical Engineering Design 10
The shaft shown in the figure is proposed as a preliminary design for the application defined in Prob. 373, p. 152. The effective centers of the gears for force transmission are shown. The dimensions for the bearing surfaces (indicated with cross markings) have been estimated. The shaft rotates at 90

Mechanical Engineering Design 10
Repeat the requirements of Prob. 1129 for the bearing at the left end of the shaft.

Mechanical Engineering Design 10
Repeat the requirements of Prob. 1129 for the bearing at the left end of the shaft.

Mechanical Engineering Design 10
Shown in the figure is a gear-driven squeeze roll that mates with an idler roll. The roll is designed to exert a normal force of 35 lbf/in of roll length and a pull of 28 lbf/in on the material being processed. The roll speed is 350 rev/min, and a design life of 35 kh is desired. Use an application f

Mechanical Engineering Design 10
Shown in the figure is a gear-driven squeeze roll that mates with an idler roll. The roll is designed to exert a normal force of 35 lbf/in of roll length and a pull of 28 lbf/in on the material being processed. The roll speed is 350 rev/min, and a design life of 35 kh is desired. Use an application f

Mechanical Engineering Design 10
The figure shown is a geared countershaft with an overhanging pinion at C. Select an angular contact ball bearing from Table 11-2 for mounting at O and an 02-series cylindrical roller bearing from Table 11-3 for mounting at B. The force on gear A is \(F_A=600 \mathrm{lbf}\), and the shaft is to run a

Mechanical Engineering Design 10
The figure shown is a geared countershaft with an overhanging pinion at C. Select an angularcontact ball bearing from Table 112 for mounting at O and an 02-series cylindrical roller bearing from Table 113 for mounting at B. The force on gear A is FA 5 600 lbf, and the shaft is to run at a speed of 42

Mechanical Engineering Design 10
The figure is a schematic drawing of a countershaft that supports two V-belt pulleys. The countershaft runs at 1500 rev/min and the bearings are to have a life of 60 kh at a combined reliability of 0.98, assuming distribution data from manufacturer 2 in Table 116. The belt tension on the loose side o

Mechanical Engineering Design 10
The figure is a schematic drawing of a countershaft that supports two V-belt pulleys. The countershaft runs at 1500 rev/min and the bearings are to have a life of 60 kh at a combined reliability of 0.98, assuming distribution data from manufacturer 2 in Table 116. The belt tension on the loose side o

Mechanical Engineering Design 10
A 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 50 kh when used at 300 rev/min. Use 1.2 for the application factor and a reliability goal for the bearing pair of 0.96, as

Mechanical Engineering Design 10
A 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 50 kh when used at 300 rev/min. Use 1.2 for the application factor and a reliability goal for the bearing pair of 0.96, as

Mechanical Engineering Design 10
The worm shaft shown in part a of the figure transmits 1.2 hp at 500 rev/min. A static force analysis gave the results shown in part b of the figure. Bearing A is to be an angular-contact ball bearing selected from Table 112, mounted to take the 555-lbf thrust load. The bearing at B is to take only t

Mechanical Engineering Design 10
The worm shaft shown in part a of the figure transmits 1.2 hp at 500 rev/min. A static force analysis gave the results shown in part b of the figure. Bearing A is to be an angular-contact ball bearing selected from Table 112, mounted to take the 555-lbf thrust load. The bearing at B is to take only t

Mechanical Engineering Design 10
In bearings tested at 2000 rev/min with a steady radial load of 18 kN, a set of bearings showed an \(L_10\) life of 115 h and an \(L_80\) life of 600 h. The basic load rating of this bearing is 39.6 kN. Estimate the Weibull shape factor b and the characteristic life \(\theta\) for a two-parameter mod

Mechanical Engineering Design 10
In bearings tested at 2000 rev/min with a steady radial load of 18 kN, a set of bearings showed an L10 life of 115 h and an L80 life of 600 h. The basic load rating of this bearing is 39.6 kN. Estimate the Weibull shape factor b and the characteristic life u for a two-parameter model. This manufactur

Mechanical Engineering Design 10
A 16-tooth pinion drives the double-reduction spur-gear train in the figure. All gears have \(25^{\circ}\) pressure angles. The pinion rotates ccw at 1200 rev/min and transmits power to the gear train. The shaft has not yet been designed, but the free bodies have been generated. The shaft speeds are

Mechanical Engineering Design 10
A 16-tooth pinion drives the double-reduction spur-gear train in the figure. All gears have 25 pressure angles. The pinion rotates ccw at 1200 rev/min and transmits power to the gear train. The shaft has not yet been designed, but the free bodies have been generated. The shaft speeds are 1200 rev/min

Mechanical Engineering Design 10
Estimate the remaining life in revolutions of an 02-30 mm angular-contact ball bearing already subjected to 200 000 revolutions with a radial load of 18 kN, if it is now to be subjected to a change in load to 30 kN.

Mechanical Engineering Design 10
Estimate the remaining life in revolutions of an 02-30 mm angular-contact ball bearing already subjected to 200 000 revolutions with a radial load of 18 kN, if it is now to be subjected to a change in load to 30 kN.

Mechanical Engineering Design 10
The same 02-30 angular-contact ball bearing as in Prob. 1138 is to be subjected to a two-step loading cycle of 4 min with a loading of 18 kN, and one of 6 min with a loading of 30 kN. This cycle is to be repeated until failure. Estimate the total life in revolutions, hours, and loading cycles.

Mechanical Engineering Design 10
The same 02-30 angular-contact ball bearing as in Prob. 1138 is to be subjected to a two-step loading cycle of 4 min with a loading of 18 kN, and one of 6 min with a loading of 30 kN. This cycle is to be repeated until failure. Estimate the total life in revolutions, hours, and loading cycles.

Mechanical Engineering Design 10
A countershaft is supported by two tapered roller bearings using an indirect mounting. The radial bearing loads are 560 lbf for the left-hand bearing and 1095 for the right-hand bearing. An axial load of 200 lbf is carried by the left bearing. The shaft rotates at 400 rev/min and is to have a desired

Mechanical Engineering Design 10
A countershaft is supported by two tapered roller bearings using an indirect mounting. The radial bearing loads are 560 lbf for the left-hand bearing and 1095 for the right-hand bearing. An axial load of 200 lbf is carried by the left bearing. The shaft rotates at 400 rev/min and is to have a desired

Mechanical Engineering Design 10
For the shaft application defined in Prob. 374, p. 152, perform a preliminary specification for tapered roller bearings at C and D. A bearing life of \(10^8\) revolutions is desired with a 90 percent combined reliability for the bearing set, assuming distribution data from manufacturer 1 in Table 116

Mechanical Engineering Design 10
For the shaft application defined in Prob. 374, 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 (a) 3 8 12 9 2

Mechanical Engineering Design 10
For the shaft application defined in Prob. 376, p. 153, perform a preliminary specification for tapered roller bearings at A and B. A bearing life of 500 million revolutions is desired with a 90 percent combined reliability for the bearing set, assuming distribution data from manufacturer 1 in Table

Mechanical Engineering Design 10
For the shaft application defined in Prob. 376, p. 153, perform a preliminary specification for tapered roller bearings at A and B. A bearing life of 500 million revolutions is desired with a 90 percent combined reliability for the bearing set, assuming distribution data from manufacturer 1 in Table

Mechanical Engineering Design 10
An outer hub rotates around a stationary shaft, supported by two tapered roller bearings as shown in Fig. 1123. The device is to operate at 250 rev/min, 8 hours per day, 5 days per week, for 5 years, before bearing replacement is necessary. A reliability of 90 percent on each bearing is acceptable. A

Mechanical Engineering Design 10
An outer hub rotates around a stationary shaft, supported by two tapered roller bearings as shown in Fig. 1123. The device is to operate at 250 rev/min, 8 hours per day, 5 days per week, for 5 years, before bearing replacement is necessary. A reliability of 90 percent on each bearing is acceptable. A

Mechanical Engineering Design 10
The gear-reduction unit shown has a gear that is press fit onto a cylindrical sleeve that rotates around a stationary shaft. The helical gear transmits an axial thrust load T of 250 lbf as shown in the figure. Tangential and radial loads (not shown) are also transmitted through the gear, producing ra

Mechanical Engineering Design 10
The gear-reduction unit shown has a gear that is press fit onto a cylindrical sleeve that rotates around a stationary shaft. The helical gear transmits an axial thrust load T of 250 lbf as shown in the figure. Tangential and radial loads (not shown) are also transmitted through the gear, producing ra