A shaft cycles such that each bearing undergoes the radial loads of 30% of the time...

A shaft cycles such that each bearing undergoes the radial loads of 30% of the time at 20kN, 50% of the time at 25kN, and 20% of the time at 30kN. If the design life of a bearing is to be at least 5e6 revolutions, select the smallest 03 series cylindrical roller bearing that will accomplish this.

Expert Solution

samet mamat answered 1 year ago

A .05 wide journal bearing supporting the loads on a 1 inch shaft just meets the...

A .05 wide journal bearing supporting the loads on a 1 inch shaft just meets the Trumpler’s design criteria for a FACTOR OF SAFTY OF 2.05. The bearing satisfies all the other Trumpler’s design criteria by much larger margin. Your colleague suggests that increasing the bushing width to 0.75 inches would be an adequate design and you would not need to conduct another journal bearing analysis because the greater width would result in a bearing which satisfy all of Trumpler’s...

A journal and bearing are to be designed for a shaft that turns at 250 rpm....

A journal and bearing are to be designed for a shaft that turns at 250 rpm. Suppose ISO VG100 (SAE Engine 30) is to be used as lubricant and the bearing length is to be equal to 1.2 times the diameter. If the no-load power loss is not to exceed 2.5 x 10-4 horsepower and the diametral clearance is 0.0045 times the diameter, estimate the maximum diameter that can be used for the journal, and the allowable temperature limit.

A high carbon steel shaft is used in an engine and subjected to different loads. In...

A high carbon steel shaft is used in an engine and subjected to different loads. In order to analyse the stress in the shaft, consider a rectangular element within the material. This element is subjected to compressive stress of 135 MPa and shear stress of 166MPa in the vertical direction. The compressive stress in the horizontal direction is 176MPa with a shear stress of 115MPa. a. Sketch the state of stress on this element. b. Determine the maximum and minimum...

A horizontal shaft of 75mm diameter projects from a bearing and, in addition to the torque...

A horizontal shaft of 75mm diameter projects from a bearing and, in addition to the torque transmitted, the shaft carries a vertical load of 8 kN at 300 mm from the bearing. If the safe stress for the material, as determined in a simple tension test, is 135 MN/m2 find the safe torque to which the shaft may be subjected using as a criterion (a) The maximum shearing, stress, (b) The maximum strain energy per unit volume. Poisson’s ratio ?...

A shaft inside the sleeve of a journal bearing is being rotated at 1500 rpm. The...

A shaft inside the sleeve of a journal bearing is being rotated at 1500 rpm. The shaft is 6.00 cm in diameter and is rotating in a bearing sleeve that is 6.02 cm in diameter and 40 cm long. The clearance is filled with oil having properties of ?=0.003 m2 /s and SG=0.88. a. Find the torque required to rotate the shaft. b. Find the power required to rotate the shaft. (Answer: 44.1 kW) c. Discussion: How do the torque...

Question1) A motor shaft is subjected to 4 kN axial load and 2 kN radial load....

Question1) A motor shaft is subjected to 4 kN axial load and 2 kN radial load. shaft rotates 800 rpm and its roller bearing has lh=10000 hours working life.Choose the single row roller bearing .(define the diameter of shaft)(Can you assign it to the table pictures.)

A roller bearing has a 22 kN radial load applied. For a life of 18000 hours...

A roller bearing has a 22 kN radial load applied. For a life of 18000 hours at 1200 rev/min, specify the smallest suitable roller bearing to use. Assume a rotating outer ring and provide relevant source information for your selected bearing.

all journal bearing has a shaft diameter=1.25in and suppports a load of 1200lbf. the bushing is...

all journal bearing has a shaft diameter=1.25in and suppports a load of 1200lbf. the bushing is 1.25-in long and has a bore diameter=1.25in. shfat speed=1500 rev/min. average film temperature=115.4oF and SAE grade 30 lubricant is used. average clearance =0.001125 in. Find a) magnitud and location of min oil-film thickness b) total lubricant volumetric flow rate c) max oil-folm pressure and its angular location d) power loss

2.How can you correlate the number of cycles to fatigue and applied loads with the fatigue...

2.How can you correlate the number of cycles to fatigue and applied loads with the fatigue behaviors. Low cycle fatigue has lower load and low number of cycles to failure None High cycle fatigue has lower loads and lower number of cycles to failure Low cycle fatigue has high loads and high number of cycles to failure High cycle fatigue has higher loads and relatively low number of cycles to failure

For a marine diesel engine application, a fluid-film journal bearing has a shaft diameter of 32...

For a marine diesel engine application, a fluid-film journal bearing has a shaft diameter of 32 mm and the length of the bearing is 24 mm. The bearing uses SAE grade 20 oil as lubricant and operates under a radial load. The inlet and outlet temperatures of oil are 50oC and 110oC respectively. It is assumed that because of the shearing action there is a uniformly distributed energy release in the lubricant that heats the lubricant film. During run-in operation,...

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