In-situ Crankpin Grinding
A damaged crankpin is ground to an undersize with a portable grinding machine and polished, without removing the crankshaft from the engine.
See the process steps
Our Services
Reconditioning work for marine main and auxiliary engines
For on-board jobs our team comes to the shipyard or port where the vessel is, with mobile equipment; removed parts are machined in our workshop in Tuzla.
In-situ Stress Relieving (Heat Treatment)
A seizure-hardened crankpin is brought down to a grindable hardness by controlled heating and cooling with resistance heaters, with the crankshaft in place.
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Inspection & Dimensional Reporting
The crankshaft and related parts go through visual, dimensional, hardness and crack checks on board; findings are delivered in a written condition report.
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In-situ Crankpin Polishing
A crankpin that is within dimensional limits but lightly scored is polished on board with abrasive belts, without regrinding.
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Laser Alignment Check
The deviation of points that should share one axis, such as main bearing housings, is measured on board against a laser reference line and reported.
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Cylinder Liner Honing
On board, with the liner in place: the glazed layer in the bore is removed with honing stones and the cross-hatch that holds oil for the piston rings is restored. It is not a dimensional correction.
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Liner Seating Face Grinding
The flatness of the block face on which the cylinder liner seats, lost to wear, corrosion or pitting, is restored with a portable grinding rig without removing the block.
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Crane Pedestal Seating Face Grinding
The flatness of the seating face that carries a ship crane's slewing bearing is restored on board with a portable grinding rig.
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Workshop Machining Services
Diesel engine parts removed from the vessel and brought to our Tuzla workshop are measured, and worn surfaces are brought back to serviceable dimensions by grinding, honing and machining.
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Connecting Rod Crack Detection
Surface cracks in connecting rods are searched for by liquid dye penetrant inspection and reported by location and length.
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Liner Flange Underside Grinding
The flatness of the liner flange underside, the face with which the liner seats on the engine block, lost to wear, corrosion or pitting, is restored by grinding.
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We do not sell spare parts or engines, and we do not overhaul turbochargers. Our service is reconditioning work, on board and in our workshop.
Not sure which job you need?
Tell us about the engine, the damage and where the vessel is; we will review it and get back to you.
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