Cylinder Liners - Main Engine and Propulsion

Cylinder liners form the replaceable running surface for pistons in marine propulsion engines. They retain combustion pressure, transfer heat to the cooling system, and provide controlled lubrication while protecting the engine block or cylinder jacket from wear.

ProShipWorks provides end-to-end support to source and supply Cylinder Liners for marine vessels, ship operators, industrial facilities, maintenance teams and procurement departments.

Last updated: October 11, 2026

Product Information

Product Name	Cylinder Liners
Product Category	Main Engine and Propulsion
Product Reference	1
Brands / Manufacturers	MAN Energy Solutions, WinGD, Japan Engine Corporation
Unit of Measure	Piece

Key Features

Key Feature
1. Centrifugally cast, wear-resistant alloy cast-iron construction
2. Precision-honed internal running surface
3. Cooling passages or jacket-contact surfaces for heat transfer
4. Machined lubrication points for cylinder oil distribution
5. Replaceable design matched to engine type and cylinder bore

Applications of Cylinder Liners

Application
1. Low-speed two-stroke main propulsion diesel engines
2. Medium-speed four-stroke propulsion engines
3. Marine diesel engine overhaul and cylinder reconditioning

Models & Manufacturers

Model	Manufacturer
G70ME-C10	MAN Energy Solutions
X72DF	WinGD
UEC60LSII	Japan Engine Corporation

Technical Specifications

Model	Specification	Value	Unit
G70ME-C10	Nominal cylinder bore	700	mm
X72DF	Nominal cylinder bore	720	mm
UEC60LSII	Nominal cylinder bore	600	mm

Standards, Certifications & Class Approval

Review the available standards and approval information relevant to the product. Actual certification, material traceability, inspection and classification requirements depend on the product type, intended application and purchasing specification.

Applicable Standards & Certification	Manufacture, dimensions, material properties, surface finish and inspection must comply with the engine maker's approved drawings and technical specifications. Material and inspection certificates may be supplied to EN 10204 when contractually required.
Class Approval	Replacement liners for classed main engines are generally subject to the vessel's classification rules, OEM acceptance, material traceability and survey requirements. Relevant societies may include DNV, ABS, Lloyd's Register, Bureau Veritas and ClassNK.

Installation, Maintenance & Safety Information

Installation Notes	Confirm the exact engine type, bore, drawing number and oversize status. Clean and inspect seating surfaces, renew specified seals, verify liner protrusion and alignment, tighten components to OEM procedures, and pressure-test the cooling space before operation.
Maintenance Tips	Measure bore diameter, ovality, taper and wear at OEM-defined intervals. Inspect for scuffing, polishing, corrosion, cracks and blocked lubrication points. Maintain correct cylinder-oil feed rate, cooling-water condition and piston-ring condition.
Safety Notes	Stop, isolate and lock out the engine before work. Drain and depressurize cooling and lubrication systems, use certified lifting equipment and liner lifting tools, secure suspended loads, and follow OEM limits for reuse, honing or replacement.