The minimum life of the bearing is the life which 90% of the bearings will reach or exceed before fatigue failure. Select one: True False
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Q: True
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A: Solution:
Q: What is the bore diameter of a ball bearing having bearing number 6301? Select one 12 mm 10 mm 5…
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Q: What is the bore diameter of a ball bearing having bearing number 6301? 1 mm 12 mm 5 mm 10 mm
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- The average bearing life is the life that 90% of bearings will achieve or exceed before they fail due to fatigue. Select one: True FalseThe minimum bearing life is the life that 10% of bearings will achieve or exceed before they fail due to fatigue. Select one: True FalseList any four technical reasons why ball and roller bearings need to lubricated
- A ball bearing operating at a load F has 8000 hours of life. What is the life of the bearing, in hours, when the load is d doubled to 2F?Explain the steel classification number 1030.The load on an electric-motor bearing is 350 lb., radial; 16 hr. service, n = 1200 rpm; compressor drive; inner race stationary. Decide upon a deep groove ball bearing, giving its significant dimensions. Then compute the selected bearing’s 90 % life, and the probable percentage of failures that would occur during the design life. What is the approximate median life of this bearing?
- The output shaft of a reducer is bearing in bearings A and B. From deep groove ball bearings, bed A is fixed and bed B is free-formed. Which of the following is true for the inner and Outer Ring of the bearing in bearing B?Please select one: a. Because the FG force acts on the shaft, there are no forces coming to the bracelets.b. the inner ring has a point, and the Outer Ring has an environmental load.c. Environmental load affects the outer ring.d. environmental load acts on the inner ring and point load acts on the outer ring.e. both environmental and point load affect the inner ring.5. You are a new employee in a company and they asked you to do a small sketch for Acme thread if p= 10 mm 6. What are rolling contact bearings? Discuss their advantages over sliding contact bearings. 7. What are the function of the bearing? 8. With the help of a small sketch explain Thick film bearings?The rolling contact ball bearing are to be selected to support the overhung countershaft. The shaft speed is 820rpm. The bearings are to have 99% reliability corresponding to a life of 19,000 hours. The bearing is subjected to an equivalent radial load of 2 kN. Determine the basic dynamic load rating of the bearing in kN from manufacturer's catalogue, specified at 90% reliability. Hint: Get the life of the bearing corresponding to 99% reliability first using L = 60NLH
- Explain the meaning of all the digits of a roller bearing having a bearing number "26BC04" according to AFBMA. Write any three functions of bearings considering the bearings as a mechanical element.Explain the term ‘Effect of End Conditions on Critical Load of Columns'design Using safety factor of (3), determine a minimum diameter for the shaft shown in FIGURE 2. The shaft material AISI 1050 HR (hot rolled) steel. The power to be transmitted is (8 KW) at (900 rpm). The diameter of the pulley is (250 mm) and the ratio of belt tensions is (2.5). (90 percent) reliability is desired. FIGURE 2