Casting Connecting Rod

The Casting connecting rod is the part of a piston engine that connects the
pistons to the crankshaft. Together with the crank, the connecting rod converts
the reciprocating motion of the piston into rotation of the crankshaft. A
connecting rod is needed to transmit the compression and tension of the piston.
In its most common form, in an internal combustion engine, it allows pivoting
at the piston end and rotation at the shaft end.
The predecessor of the connecting rod is the mechanical linkage used by the
water mill to convert the rotary motion of the waterwheel into reciprocating
motion.
Connecting rods are designed to withstand high loads and pressures from
combustion, piston movement, and compressive and tensile forces. They also need
to be durable, have structural integrity, and be able to absorb shock and act
as a shock absorber. Connecting rods are commonly made from cast aluminum alloy
or drop-forged, heat-treated steel. Each end of the rod is bored, with the
smaller top end connecting to the piston pin and the larger bottom end split in
half and bolted to the crankshaft. Some diesel engine connecting rods also have
a hole drilled down the center to allow lubrication oil to flow from the
crankshaft to the piston.

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