CHRIS-MARINE® Liner Diameter Measurement / LDM

Product Overview

Instrument for measuring of liner diameter without removal of 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

Complete liner diameter measuring in fractions of time compared to traditional methods.

Usually, a three-man team will measure two cylinder liners in one long working day. With the Chris-Marine Liner Diameter Measuring tool (LDM), the same operation can be done in three hours by one single operator. The LDM can be used for verifying cylinder wear and deformation prior to dry-docking or for following up cylinder wear and deformation on a single engine of interest by complementing regular scavenging port inspections with cylinder liner measurement.

User-friendly Liner Diameter Measuring

Abnormal wear and deformation resulting from slow-steaming, new lube oils or changed route are conveniently picked up with the LDM, allowing for prompt countermeasures. The latest LDM-4 generation offers 13 hours of continuous user time without intermediate recharging and is more user-friendly than ever 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 such as heat load deformation as a result of slow-steaming retrofitting, injector erosion and 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.

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