Cylinder liners are precision-engineered sleeves inserted into engine blocks to form the combustion chamber surface and guide piston movement.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Hardness | 180-250 HB | |
| Concentricity | ≤0.01 mm | |
| Wall Thickness | 1.5-3.0 mm | |
| Length Tolerance | ±0.1 mm | |
| Surface Roughness | Ra 0.2-0.8 μm | |
| Diameter Tolerance | ±0.005 mm |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
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Wet liners have direct contact with engine coolant, providing better heat transfer but requiring precise sealing. Dry liners are pressed into the engine block without coolant contact, offering simpler installation but potentially less efficient cooling.
Cylinder liners typically last 200,000-300,000 miles in normal operation but should be inspected during major engine overhauls. Replacement is necessary when wear exceeds manufacturer specifications, scoring is visible, or compression loss occurs.
Common failure causes include improper installation, inadequate lubrication, coolant contamination, thermal stress from overheating, cavitation erosion, and abrasive wear from contaminated oil or air.
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