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What Does Cylinder Liner Do?Function And 3 Advantage Of Cylinder Liner

Cylinder Liner or Sleeve is a cylindrical component that is removable which is fitted in the Engine Block which provides the surface for the piston to reciprocate internally and carry out its compression. Cylinder Liners can be easily replaced when it wears out.The cylinder liner, acting as the inner wall of cylinders, forms a sliding surface for the pistons rings while retaining the lubricant within.


The most important functions of cylinder liners are the excellent characteristic of the sliding surface and these essential points.However, as sliding surfaces for the inner cylinder, the straight sliding motion of aluminum alloys has the drawbacks of deformation during operation and wear resistance. For this reason, cast iron cylinder liners are used in most cases.

The function and advantage of cylinder liner

It is a cylinder that is fitted to the engine block to form the cylinder, and is one critical function part that forms the engine interior.

In Japan they are usually called Cylinder Liners, but some countries (companies) call them Cylinder Sleeves.A cylinder liner is a cylindrical part to be fitted into an engine block to form a cylinder. It is one of the most important functional parts to make up the interior of an engine.

This is called Cylinder liner in Japan, but some countries call this Cylinder sleeve.These are main functions of Cylinder Liners.The cylinder liner, serving as the inner wall of a cylinder, forms a sliding surface for the piston rings while retaining the lubricant within. The most important function of cylinder liners is the excellent characteristic as sliding surface and these four necessary points.

  1. High anti-galling properties
  2. Less wear on the cylinder liner itself
  3. Less wear on the partner piston ring
  4. Less consumption of lubricant


Material of engine cylinder liner

The engine’s cylinder wall is a high temperature/high pressure, and the piston ring/piston is sliding at high speed, and particularly with truck/bus engines a long life is demanded, so we use highly friction resistant casting material Cylinder Liners only for cylinders.

Also, in recent years, to make engines light-weight, engine blocks are changing from casting to aluminum alloys, however, aluminum alloys suffer deformation and friction during direct sliding when used for the cylinder inner circumference, therefore, the aluminum die-cast block is mainly used where the Cylinder Liner is cast-in.


Damage to the cylinder liner

A cylinder liner is a device that is pressed into an engine block and houses the piston. It is much harder than the engine block and prevents the piston from wearing through the cylinder bore.

Typically used in aluminum engine blocks  and diesel engines,the cylinder liner is either pressed into position or held in place by the cylinder head. In large engines such as the engines found in diesel locomotives, the liner is part of an assembly containing a new piston, piston rings, and a connecting rod and is changed as a complete unit during scheduled maintenance or repair.

There are also instances when a cylinder liner can be used to repair a cast iron engine block that has suffered a catastrophic failure to a cylinder wall. Often, when an engine fails or “blows up,” the cylinder wall takes the brunt of the trauma rendering it unrepairable by over-boring.

In this instance, the block might be machined to receive a liner and then all of the cylinders could be over-bored to the same size, rendering the engine useful once again. For street-driven vehicles, this is a viable option that typically offers the vehicle owner significant savings over the cost of a replacement engine.


Cylinder Liner for  Engine for sale at Landtop,At our store, you will find a broad assortment of cost-effective engine spare parts for all major diesel engines. We carry out a great selection of cylinder heads, overhaul kits, injection pumps, turbochargers, radiators, oil coolers, water pumps, fuel pumps, mufflers and other engine parts. Browse our online catalog and choose the one that fits your needs.

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