The worm shaft shown in the figure transmits 1-kW at 500 rev/min. A static force analysis results are also shown in the figure. Bearing A is to be an angular-contact ball bearing mounted to take the 2.75 kN thrust load. The bearing at B is to take only the radial load, so a straight roller bearing will be employed. Use an application factor of 1.2, a desired life of 25 kh, and a combined reliability goal of 0.99. (a) Determine the radial and thrust components of loads on each bearing. (b) Specify each bearing by giving all required charecteristics. (c) Make a design assessment for each bearing and of the system. Q-2 y 179 N 333 N 1054 N 179 N 2750 N A 2750 N 358 N 720 N

The worm shaft shown in the figure transmits 1-kW at 500 rev/min. A static force analysis results are also shown in the figure. Bearing A is to be an angular-contact ball bearing mounted to take the 2.75 kN thrust load. The bearing at B is to take only the radial load, so a straight roller bearing will be employed. Use an application factor of 1.2, a desired life of 25 kh, and a combined reliability goal of 0.99. (a) Determine the radial and thrust components of loads on each bearing. (b) Specify each bearing by giving all required charecteristics. (c) Make a design assessment for each bearing and of the system. Q-2 y 179 N 333 N 1054 N 179 N 2750 N A 2750 N 358 N 720 N

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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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 11–2, mounted to take the 555-lbf thrust load. The bearing at B is to take only the radial load, so an 02-series cylindrical roller bearing from Table 11–3 will be employed. Use an application factor of 1.2, a desired life of 30 kh, and a combined reliability goal of 0.99, assuming distribution data from manufacturer 2 in Table 11-6. Specify each Wom pitch cylinder Gear pitch cylinder (a) Worm and wom gear, h) force analysis of wom shaft krces in pounds. 595 72 35 145 bearing.
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