This paper is intended to discuss the optimization of camshaft efficiency; using the rolling bearing instead of the sliding bearing within the internal combustion engines. The advantages and disadvantages of employing this new method will be accordingly identified and determined in-order to open new windows to the vehicle manufacturing industry. Following the mentioned goal; a camshaft is designed and tested over two types of sliding and rolling bearings in the same conditions of testing. After the comparisons being made; the achieved records have been analyzed and finally the results have been concluded and discriminated by the tables. The calculations and analyses; which are reachable within this paper, are implemented by employing both simulation software and laboratory devices.

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