Engine Spare Parts (1)

The cylinder liner is a replaceable metal tube inserted into the cylinder block of a marine diesel engine. It forms the sliding surface for the piston and piston rings while containing the combustion pressure and high-temperature gases.

📊 Key Features (as visible in the image):

• Upper sealing flange (bronze/gold colored section)

• Cooling jacket passages (likely the drilled holes you see around the circumference)

• Running surface (the inner black polished surface for piston movement)

• Lower sealing and spigot section

• Anti-corrosion coating on the exterior

• Lubrication grooves (often in the liner wall, though not visible here)

📌 Material:

Typically made of alloyed cast iron or centrifugally cast iron for:

• High wear resistance

• Good thermal conductivity

• Compatibility with lubricants and piston rings

📌 Applications:

Found in large 2-stroke and 4-stroke marine diesel engines, typically in:

• Cargo ships

• Tankers

• Cruise vessels

• Offshore platforms