Cylinder liners are an integral part of a multi-cylinder block, most often in a diesel engine, where they define and share the working space and the sliding surface of the piston. The cylinder liner is made of special alloy cast iron, which has higher abrasion resistance compared to gray cast iron with flake graphite. It is machined by precise two-stage drilling and in the final stage by honing, ensuring the achievement of the required roughness parameters of the outer surface of the cylinder liner. This parameter is essential in terms of lubrication and thus the correct function and service life of the engine.
We distinguish two types of cylinder liners according to the type cooling. Dry, where the cooling medium is air, and the most widespread wet cylinder liners. Wet inserts are designed for water-cooled internal combustion engines in which the outer surface is in direct contact with the coolant. In Seco Industries, s.r.o. we produce only wet cylinder liners with the following parameters.
