Liner Diameter Measurement / LDM
Instrument used to take liner diameter measurements without removing the cylinder head or valve housing.
- For 2-stroke liners 500–980 mm bore
- Accurate measurement of cylinder wear and clover leafing without removing the cylinder cover
- Ideal when preparing for docking, for condition-based liner maintenance or in continual liner wear monitoring
- Up to 26 measurement levels in about one hour per cylinder
- Easy-to-use onboard version without need for calibration
- Workshop version including rugged casing, traditional micrometer kit and calibration rig
- User-friendly hand-held tablet with remote technical support and software upgrades
Liner diameter measurement in a fraction of the time required with traditional methods.
With traditional methods, it will take a three-man team a full day to get liner diameter measurement from two cylinder liners. However, with the Chris-Marine Liner Diameter Measuring tool (LDM), this task can be completed in just three hours by a single operator. The LDM offers a fast, accurate, and reliable way to measure cylinder wear and deformation, improving efficiency and reducing downtime.
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User-friendly Liner Diameter Measuring
Abnormal wear and deformation resulting from slow-steaming, new lube oils, or changed route are conveniently picked up by the LDM, thereby allowing for prompt countermeasures. The latest LDM-generation offers 13 hours of continuous user-time without intermediate recharging, which makes it even more user-friendly than before. Like previous versions, it can measure all 2-stroke engines with a bore from 500 to 980 mm, without removing the cylinder cover or exhaust valve housing.
The clover-leafing measurement feature allows the user to detect non-oval wear and deformation like:
- heat load deformation, due to slow-steaming retrofitting
- injector erosion
- lube oil distribution related wear
The LDM is available for MAN B&W, Wartsila and Mitsubishi 2-stroke engines with a cylinder bore of 500 to 980 mm.
Want to learn how to use the LDM?
Video: How to use the Liner Diameter Measuring Instrument
Chris-Marine’s monitoring portfolio includes instruments to:
- measure surface roughness, liner diameter and coating thickness
- take pictures of the liner to visualize potential wear and damage
- analyze shaft power efficiency
- measure cylinder pressure
Learn more about Cylinder Condition Monitoring & Reconditioning
