Sleeves

Wet sleeves are chiefly used in utility vehicles and large industrial engines. They are used in the engine block together with sealing rings and have a wall thickness of 7 to 15 mm. Coolant agent from the engine flows directly around them.

The sealing rings and tombak shims are included in the scope of supply for the sleeves.

In passenger cars and smaller utility vehicle engines, dry sleeves are used wherever the material of the engine block does not satisfy the tribological requirements.

Dry sleeves are only a few millimetres thick, and are pressed directly into the engine sleeves (press-fit) or pushed in (slip-fit).

Air cooled sleeves are primarily used in simpler, air-cooled engine designs without a coolant circuit. The air cooled sleeves sits on the engine block and is cooled by the head wind.

Oversized sleeves offer further repair possibilities for passenger car and utility vehicle engines that have seen better days. 

Oversized sleeves are differentiated by the flange diameter (C), flange height (H) and/or the outside diameter (A).

Castings made from lamellar grey cast iron and ALUSIL® further extend the product range. They allow engine reconditioners to produce sleeves with special dimensions themselves to suit particular requirements.