Compatibility
Is your engine covered?
Two-stroke marine diesel engines with liner bores from 500 to 980 mm. Three inputs give you the answer; configurations outside the range are assessed individually.
- 500-980mm
- Liner bore
- 3
- Engine makers
- Air slots
- Access
- Two-stroke
- Engine type
Covered configurations
| Engine maker | Type series | Bore | Access | Status |
|---|---|---|---|---|
| MAN B&W | S/G/L-ME-C, ME-B | 500-980 mm | Air slots | Covered |
| WinGD / Wärtsilä | RT-flex, X-series | 500-960 mm | Air slots | Covered |
| Mitsubishi | UE series | 500-850 mm | Air slots | Covered |
| MAN B&W | MC / MC-C legacy | 500-900 mm | Air slots | Covered |
| MAN B&W / Everllence | S50ME-B (drilled air slots) | 500 mm | Air slots, prepared | One-time preparation |
| Other makers | On request | <500 / >980 mm | To be surveyed | Individual |
The table states the standard coverage. Whether an attendance is applicable also depends on the local access situation onboard, which is confirmed in the configuration check.
500 mm bore - drilled air slots
The narrow case, solved.
Not every 500 mm bore engine has milled scavenge air slots. On some units - the MAN B&W / Everllence S50ME-B among them - the slots are drilled, and the web left between two holes is narrower than the measuring head needs to pass.
MARIDIS has released a slot geometry for exactly this case: the edges are ground back once so that a clear distance of at least 38 mm remains. After that one-time preparation the cylinder is measured in situ like any other - no repeat work at the next attendance.
- 01 Identify
The engine data sheet shows whether the slots are drilled. We check it in the configuration check, before anything is planned.
- 02 Prepare once
The slot edges are ground to the released geometry - clear distance ≥ 38 mm - following the MARIDIS drawing.
- 03 Measure as standard
From then on the unit is a normal in-situ measurement: head in through the slot, run, condition report.
The slot geometry is MARIDIS documentation. Scope, execution and any engine-maker approval for the preparation are agreed case by case with the owner and the maker before the work is carried out.
Feasibility questions
What superintendents ask before booking.
What if my bore is outside 500-980 mm?
Send the engine data sheet. Configurations just outside the range are frequently feasible; we confirm individually before any attendance is planned.
Do you need the engine stopped?
Yes, the engine must be stopped and the scavenge air receiver opened, but the cylinder unit stays installed and no docking is required.
Can deposits prevent the measurement?
The running surface must be free of loose deposits in the measuring area. Affected areas are documented and stated within the present inspection scope.
My 500 mm bore engine has drilled air slots - is it measurable?
Yes, after a one-time preparation. On drilled slots the web between the holes is narrower than the measuring head needs. MARIDIS has released a slot geometry for this case in which the edges are ground back to a clear distance of at least 38 mm. Once that is done, the unit is measured in situ like any other. We confirm the case from the engine data sheet before any attendance.
How far ahead do you need notice?
Attendance is planned around your port rotation. Send port and ETA; we confirm availability, usually within one working day.
Unsure about your configuration? Send the engine data sheet.
LEONARD GAU · MANAGING DIRECTOR
+49 381 000 0000 · INFO@MLS-SERVICE.DE