The material of cylinder liner is grey cast iron such
as Takalloy C, GG25K and GJL 250 which are made of steel
and alloy of nonferrous metals. These castings require
a abrasive resistance and wear resistance in order to
meet high demands imposed by piston running characteristics,
high operation pressure and corrosive elements.
The cylinder liner is 460mm to 980mm in bore size, 2000kg
to 9000kg in weight and 1680mm to 3640mm in length.
The casting of cylinder liner weighs 4000kg to 20,000kg.
Based on the cylinder quantity of the main engine,
5 to 14 cylinder liners are equipp-ed.
The cylinder liner has a major influence on the safety
and performance of the ship as one of and important
items. In addition, it should be replaced periodically
due to a friction and abrasion between liner and piston
ring during the running.