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Question 4. Bearing selection Use the data in the table from the NTN catalogue (attached) for...
machine elements QUESTION-3 Shaft shown in the figure is supported by A and C bearings. Bearing...
machine elements
QUESTION-3 Shaft shown in the figure is supported by A and C bearings. Bearing A has 4300 N radial and 1400 N axial force due to the tooth force of the gear wheel on the shaft. Only a radial force of 3100 N acts on bearing C. The shaft diameters are the same in the region where the A and C bearings are located and dA = dC = 35 mm The rotation speed of the spindle is...
A radial, deep grove ball bearing is specified from a manufacturer’s catalog based on a L10...
A radial, deep grove ball bearing is specified from a manufacturer’s catalog based on a L10 life of 106 cycles. The bearing has a basic load rating of 2,500 N and is to be used in an application where the design radial load is 350 N and the axial load is zero. What is the predicted life (hours of the bearing if the inner race of the bearing rotates at 1,800 rpm? A.70 B. 3,400 C. 200,000 D. 160
5. Bearing life prediction. (20 points) A 02-series Score: with a 50 mm bore (sce Tables 11-1 and 11-2 for specific...
5. Bearing life prediction. (20 points) A 02-series Score: with a 50 mm bore (sce Tables 11-1 and 11-2 for specifications) is loaded with a 2.6 kN radial load and a 4.17 KN axial load. The inner ring rotates at 1450 rev/min. The application es single-row angular contact b factor is a,1.3. C1) Determine the equivalent radial load that will be experienced by this particular bearing. (2) Determine the predicted life (in hours) that this bearing could be _expectedtogvein this...
Q.17. How much power is supplied to two meshed spur gears if the driving gear rotates...
Q.17. How much power is supplied to two meshed spur gears if the driving gear rotates at 2000 rpm, the torque 2.00 and its efficiency is 96%? driven gear is 1.00 kNm, the speed ratio of the drive is on a A. 204 kW B. 210 kW C. 109 kW D. 105 kW E. none of above (3 Marks) Q.18. Two meshed spur gears with a 210 mm centre distance and a module of 3.00 have arc of contact of...
Question 3 (10 marks)-roller bearing A bearing is to be selected for a wood working machine application that is used 8 hours a day at 750 rpm. The radial load is 2kN. We intend to use SKF bearing...
Question 3 (10 marks)-roller bearing A bearing is to be selected for a wood working machine application that is used 8 hours a day at 750 rpm. The radial load is 2kN. We intend to use SKF bearings that have rated life of I million revolutions. The application uses commercial gearing. The reliability goal is 0.90. For this bearing type, the Weibull parameters are xo-0,02,(0- xo)-4.439 and b 1.483. Find; a) Rating life required for the bearing b) C1o c)...
4. Fig. 7 shows a shaft assembly used in gear reducer, where a pair of bearings...
4. Fig. 7 shows a shaft assembly used in gear reducer, where a pair of bearings radial forces on gears 1 and 2 are Fri=12600N, FR2-14400N; the axial forces on gears FATSOON; the pitch circle diameters of gear 1 and 2 are di-200mm and droom The revolution of shaft is n-600 r/min, the application factor ar=1.5. (The basic dyna C = 71kN, e0.4, the induced axial force Fi - F/3.0. If F/F>e, X -0.4, Y-1.5, and 1, Y 0; Note:...
Cene clutch Figure (4) Motor 04: Figure (4) shows a simple single-reduction bevel gears pair. Power...
Cene clutch Figure (4) Motor 04: Figure (4) shows a simple single-reduction bevel gears pair. Power is received from the motor through a flange coupling to the gearbox. Cone clutch is used to connect or disconnect the motion comes from the motor by the action of the helical spring. Requirements: 1. Power of motor if it has speed of 2000 rpm. 2. If the basic dynamic rating of Deep-groove ball bearing at C is (C = 3.94 kN), find the...
tables that would help u Q-4 An 02-series single-row deep-groove ball bearing with a 30-mm bore...
tables that would help u
Q-4 An 02-series single-row deep-groove ball bearing with a 30-mm bore (see Tables 11-1 and 11-2 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. [15 pts.] (6) Determine the predicted life (in revolutions) that this bearing could be expected to give in this application with a 99 percent...
Question 4 A sample of soft silty clay from the Thames Estuary is taken from the...
Question 4 A sample of soft silty clay from the Thames Estuary is taken from the ground, trimmed to a cylindrical specimen and then placed into a triaxial cell. The sample is compressed isotropically under drained conditions by increasing the cell pressure in the triaxial cell to 450 kN/m², with a back (pore) pressure of 200 kN/m2. At the end of the compression stage the sample is calculated to have dimensions of length = 74.03 mm and diameter = 37.17...
Question 4 [25 marks] An electric motor drives a coaxial rotor through a single-plate clutch which...
Question 4 [25 marks] An electric motor drives a coaxial rotor through a single-plate clutch which has two pairs of driving surfaces each 300 mm external and 175 mm internal diameter. The variation of normal pressure with radius is given by a + b/r Pa and the maximum pressure is 150 kPa. The spring force on the system is 500 N. The mass of the motor armature and shaft is 750 kg and its radius of gyration is 240 mm;...
machine elements
QUESTION-3 Shaft shown in the figure is supported by A and C bearings. Bearing A has 4300 N radial and 1400 N axial force due to the tooth force of the gear wheel on the shaft. Only a radial force of 3100 N acts on bearing C. The shaft diameters are the same in the region where the A and C bearings are located and dA = dC = 35 mm The rotation speed of the spindle is...
5. Bearing life prediction. (20 points) A 02-series Score: with a 50 mm bore (sce Tables 11-1 and 11-2 for specifications) is loaded with a 2.6 kN radial load and a 4.17 KN axial load. The inner ring rotates at 1450 rev/min. The application es single-row angular contact b factor is a,1.3. C1) Determine the equivalent radial load that will be experienced by this particular bearing. (2) Determine the predicted life (in hours) that this bearing could be _expectedtogvein this...
Q.17. How much power is supplied to two meshed spur gears if the driving gear rotates at 2000 rpm, the torque 2.00 and its efficiency is 96%? driven gear is 1.00 kNm, the speed ratio of the drive is on a A. 204 kW B. 210 kW C. 109 kW D. 105 kW E. none of above (3 Marks) Q.18. Two meshed spur gears with a 210 mm centre distance and a module of 3.00 have arc of contact of...
Question 3 (10 marks)-roller bearing A bearing is to be selected for a wood working machine application that is used 8 hours a day at 750 rpm. The radial load is 2kN. We intend to use SKF bearings that have rated life of I million revolutions. The application uses commercial gearing. The reliability goal is 0.90. For this bearing type, the Weibull parameters are xo-0,02,(0- xo)-4.439 and b 1.483. Find; a) Rating life required for the bearing b) C1o c)...
4. Fig. 7 shows a shaft assembly used in gear reducer, where a pair of bearings radial forces on gears 1 and 2 are Fri=12600N, FR2-14400N; the axial forces on gears FATSOON; the pitch circle diameters of gear 1 and 2 are di-200mm and droom The revolution of shaft is n-600 r/min, the application factor ar=1.5. (The basic dyna C = 71kN, e0.4, the induced axial force Fi - F/3.0. If F/F>e, X -0.4, Y-1.5, and 1, Y 0; Note:...
Cene clutch Figure (4) Motor 04: Figure (4) shows a simple single-reduction bevel gears pair. Power is received from the motor through a flange coupling to the gearbox. Cone clutch is used to connect or disconnect the motion comes from the motor by the action of the helical spring. Requirements: 1. Power of motor if it has speed of 2000 rpm. 2. If the basic dynamic rating of Deep-groove ball bearing at C is (C = 3.94 kN), find the...
tables that would help u
Q-4 An 02-series single-row deep-groove ball bearing with a 30-mm bore (see Tables 11-1 and 11-2 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. [15 pts.] (6) Determine the predicted life (in revolutions) that this bearing could be expected to give in this application with a 99 percent...
Question 4 A sample of soft silty clay from the Thames Estuary is taken from the ground, trimmed to a cylindrical specimen and then placed into a triaxial cell. The sample is compressed isotropically under drained conditions by increasing the cell pressure in the triaxial cell to 450 kN/m², with a back (pore) pressure of 200 kN/m2. At the end of the compression stage the sample is calculated to have dimensions of length = 74.03 mm and diameter = 37.17...
Question 4 [25 marks] An electric motor drives a coaxial rotor through a single-plate clutch which has two pairs of driving surfaces each 300 mm external and 175 mm internal diameter. The variation of normal pressure with radius is given by a + b/r Pa and the maximum pressure is 150 kPa. The spring force on the system is 500 N. The mass of the motor armature and shaft is 750 kg and its radius of gyration is 240 mm;...
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