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Unformatted text preview: place, one or more strips are removed and the bearing is trued up.
** It is the distance between the centres of small end and big end of the connecting rod.
One half is fixed with the connecting rod and the other half (known as cap) is fastened with two cap bolts. Internal Combustion Engine Parts n 1145 The connecting rods are usually manufactured by drop forging process and it should have adequate
strength, stiffness and minimum weight. The material mostly used for connecting rods varies from
mild carbon steels (having 0.35 to 0.45 percent carbon) to alloy steels (chrome-nickel or chromemolybdenum steels). The carbon steel having 0.35 percent carbon has an ultimate tensile strength of
about 650 MPa when properly heat treated and a carbon steel with 0.45 percent carbon has a ultimate
tensile strength of 750 MPa. These steels are used for connecting rods of industrial engines. The alloy
steels have an ultimate tensile strength of about 1050 MPa and are used for connecting rods of
aeroengines and automobile engines.
The bearings at the two ends of the connecting rod are either splash lubricated or pressure
lubricated. The big end bearing is usually splash lubricated while the small end bearin...
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- Spring '11