Figure below shows the load components acting on a helical gear mounted on a simply
supported shaft. Bearing B takes thrust. A flexible coupling for transmitting
torque attaches to the right end of the shaft. The left end is
free.
1-Draw load, shear force, and bending moment diagrams for the shaft, in both the horizontal and vertical planes.
2- Identify the most critically loaded shaft cross section, and for this location determine the diameter theoretically required for infinite life. Assume that the shaft will be machined from steel having Su = 150 ksi and Sy = 120 ksi, and that Kf = 2.0, 1.5, and 2.0 will apply to bending, torsional, and axial loading, respectively, at the critical location
3- What radial and thrust loads are applied to the bearings?
4- Estimate the C required for bearing A for 100,000 hours of life with 99% reliability
5-From the SKF tool can a deep groove ball bearing be used for bearing B with 100,000 hours of life with 99% reliability
Homework Answers
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Figure below shows the load components acting on a helical gear
mounted on a simply
supported...
Question 2: [20 Points) The Figure below shows a portion of a pump that is gear...
Question 2: [20 Points) The Figure below shows a portion of a pump that is gear driven at uniform load and speed. The shaft is supported by bearings mounted in the pump housing. The shaft is made of steel, its yield strength is 800 MPa and its ultimate tensile strength is 1000 MPa. The surface of the shaft is machined. Due to the fillet at A, the fatigue bending stress concentration factor is 2.0, the fatigue torsion stress concentration factor...
(Q6) Figure (3) shows a countershaft with helical gear (B), bevelg (D), and two supporting (Dthe helical par...
(Q6) Figure (3) shows a countershaft with helical gear (B), bevelg (D), and two supporting (Dthe helical parte n ear \、Q oads acting on the bevel gear are known Forces on the have a ra be determined. Shaft dimensions are known. All shoulder fillets na bearing A takes thrust. The shat rotates at 1000 rpm and is ma iaportant surfaces are finished by grinding. Select suitable radial ball bearings at A and for a dius of 5 mm. Only hardened...
Question 2 The shaft shown below is rotating at 650 rpm, and it receives 7.5 hp...
Question 2 The shaft shown below is rotating at 650 rpm, and it receives 7.5 hp through a flexible coupling. The power is delivered to an adjacent shaft through a single helical gear B having a normal pressure angle of 20 degrees and a helix angle of 15 degrees. The pitch diameter for the gear is 4.141 inches (De) and the Tangential (Wu), radial (W) and axial/thrust (W) are shown below on the drawing. The shaft is to be made...
The following figure shows two bearings supporting a 0.08×10^3-rpm shaft and gear. The bearing on the...
The following figure shows two bearings supporting a
0.08×10^3-rpm shaft and gear. The bearing on the left carries a
4.07kN radial load and 0.32kN thrust load. The loading is
borderline between “light” and “moderate” impact. The required life
is 4000 hours with only 2% probability of failure. What is the
required bearing capacity in kN? Solve to 2 decimal spaces. An
error of 5% is allowed for. T4 Q3.PNG
The following figure shows two bearings supporting a 0.08x10^3-rpm shaft and...
Figure P14.28 shows two bearings supporting a 1000-rpm shaft and gear. The bearing on the left...
Figure P14.28 shows two bearings supporting a 1000-rpm shaft and gear. The bearing on the left carries a 5-kN radial load and 1-KN thrust load. The loading is borderline between "light" and "moderate" impact. The required life is 5000 hours with only 2% probability of failure. Select a 200 series radial-contact ball bearing for the left bearing. Shaft Bearing Gear FIGURE P14.28
A Read aloud Draw Erase Figure P14.28 shows two bearings supporting a 1000-rpm shaft and gear....
A Read aloud Draw Erase Figure P14.28 shows two bearings supporting a 1000-rpm shaft and gear. The bearing on the left carries a 5-kN radial load and 1-KN thrust load. The loading is borderline between "light" and “moderate" impact. The required life is 5000 hours with only 2% probability of failure. Select a 200 series radial-contact ball bearing for the left bearing. Gear Shaft Bearing bo 10:22 PM 3 O Type here to search
Q-1 The shaft shown in figure below, supported by and turns in the bearings A and B. The dimensions of the shaft are a = 120 mm and b = 30 mm. The forces on the bevel (conical) gear attached to the sh...
Q-1 The shaft shown in figure below,
supported by and turns in the bearings A and B.
The dimensions of the shaft are a = 120 mm and b =
30 mm. The forces on the bevel (conical) gear attached to the
shaft are Wt = 4500 N, Wr =
2500 N, and Wa = 1000 N. The gear forces act at
a radius R = 100 mm from the shaft axis.
Determine the loads applied to the bearings (FrA...
The shaft shown in the figure is driven by a gear at the right keyway, drives...
The shaft shown in the figure is driven by a gear at the right keyway, drives a fan at the left keyway, and is supported by two deep-groove ball bearings at locations A and B. The shaft is made from AISI 1045 cold-drawn steel. At steady-state speed, the gear transmits a radial load of 300 lbf and a tangential load of 700 lbf at a pitch diameter of 8 in. Assume that the weight and axial load of the fan...
QUESTION 10 The shaft shown in the figure is driven by a gear at the right...
QUESTION 10 The shaft shown in the figure is driven by a gear at the right keyway, drives a fan at the left keyway, and is supported by two deep-groove ball bearings at locations A and B. The shaft is made from AISI 1045 cold-drawn steel. At steady-state speed, the gear transmits a radial load of 300 lbf and a tangential load of 700 lbf at a pitch diameter of 8 in. Assume that the weight and axial load of...
The shaft shown in the figure is driven by a gear at the right keyway, drives...
The shaft shown in the figure is driven by a gear at the right keyway, drives a fan at the left keyway, and is supported by two deep-groove ball bearings at locations A and B. The shaft is made from AISI 1045 cold-drawn steel. At steady-state speed, the gear transmits a radial load of 300 lbf and a tangential load of 700 lbf at a pitch diameter of 8 in. Assume that the weight and axial load of the fan...
Question 2: [20 Points) The Figure below shows a portion of a pump that is gear driven at uniform load and speed. The shaft is supported by bearings mounted in the pump housing. The shaft is made of steel, its yield strength is 800 MPa and its ultimate tensile strength is 1000 MPa. The surface of the shaft is machined. Due to the fillet at A, the fatigue bending stress concentration factor is 2.0, the fatigue torsion stress concentration factor...
(Q6) Figure (3) shows a countershaft with helical gear (B), bevelg (D), and two supporting (Dthe helical parte n ear \、Q oads acting on the bevel gear are known Forces on the have a ra be determined. Shaft dimensions are known. All shoulder fillets na bearing A takes thrust. The shat rotates at 1000 rpm and is ma iaportant surfaces are finished by grinding. Select suitable radial ball bearings at A and for a dius of 5 mm. Only hardened...
Question 2 The shaft shown below is rotating at 650 rpm, and it receives 7.5 hp through a flexible coupling. The power is delivered to an adjacent shaft through a single helical gear B having a normal pressure angle of 20 degrees and a helix angle of 15 degrees. The pitch diameter for the gear is 4.141 inches (De) and the Tangential (Wu), radial (W) and axial/thrust (W) are shown below on the drawing. The shaft is to be made...
The following figure shows two bearings supporting a
0.08×10^3-rpm shaft and gear. The bearing on the left carries a
4.07kN radial load and 0.32kN thrust load. The loading is
borderline between “light” and “moderate” impact. The required life
is 4000 hours with only 2% probability of failure. What is the
required bearing capacity in kN? Solve to 2 decimal spaces. An
error of 5% is allowed for. T4 Q3.PNG
The following figure shows two bearings supporting a 0.08x10^3-rpm shaft and...
Figure P14.28 shows two bearings supporting a 1000-rpm shaft and gear. The bearing on the left carries a 5-kN radial load and 1-KN thrust load. The loading is borderline between "light" and "moderate" impact. The required life is 5000 hours with only 2% probability of failure. Select a 200 series radial-contact ball bearing for the left bearing. Shaft Bearing Gear FIGURE P14.28
A Read aloud Draw Erase Figure P14.28 shows two bearings supporting a 1000-rpm shaft and gear. The bearing on the left carries a 5-kN radial load and 1-KN thrust load. The loading is borderline between "light" and “moderate" impact. The required life is 5000 hours with only 2% probability of failure. Select a 200 series radial-contact ball bearing for the left bearing. Gear Shaft Bearing bo 10:22 PM 3 O Type here to search
Q-1 The shaft shown in figure below,
supported by and turns in the bearings A and B.
The dimensions of the shaft are a = 120 mm and b =
30 mm. The forces on the bevel (conical) gear attached to the
shaft are Wt = 4500 N, Wr =
2500 N, and Wa = 1000 N. The gear forces act at
a radius R = 100 mm from the shaft axis.
Determine the loads applied to the bearings (FrA...
The shaft shown in the figure is driven by a gear at the right keyway, drives a fan at the left keyway, and is supported by two deep-groove ball bearings at locations A and B. The shaft is made from AISI 1045 cold-drawn steel. At steady-state speed, the gear transmits a radial load of 300 lbf and a tangential load of 700 lbf at a pitch diameter of 8 in. Assume that the weight and axial load of the fan...
QUESTION 10 The shaft shown in the figure is driven by a gear at the right keyway, drives a fan at the left keyway, and is supported by two deep-groove ball bearings at locations A and B. The shaft is made from AISI 1045 cold-drawn steel. At steady-state speed, the gear transmits a radial load of 300 lbf and a tangential load of 700 lbf at a pitch diameter of 8 in. Assume that the weight and axial load of...
The shaft shown in the figure is driven by a gear at the right keyway, drives a fan at the left keyway, and is supported by two deep-groove ball bearings at locations A and B. The shaft is made from AISI 1045 cold-drawn steel. At steady-state speed, the gear transmits a radial load of 300 lbf and a tangential load of 700 lbf at a pitch diameter of 8 in. Assume that the weight and axial load of the fan...
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