Precision Alignment & Metrology
Marine Engine & Propulsion Shaft Alignment — Piraeus, Greece
Propulsion system alignment — from main engine to propeller — is performed with state-of-the-art laser systems at 1.0 μm accuracy.
Complete alignment work — measurements (laser and sag & gap on flanges), adjustment and final verification with bearing load distribution — not just a geometric survey. Where required, stern tube bore alignment is included. Flagship project: the installation of a 215 t MAN B&W main engine on a 183 m tanker
All work is carried out on site: at shipyards, dry docks and marinas — Piraeus, Perama, Salamina, Elefsina, Syros, Chalkida, Corfu — throughout Greece and worldwide, as well as afloat. Bearing load distribution is verified with jack-up measurements, and every job is documented with a technical report: before/after readings and, where requested and available from manufacturers’ instructions, the corresponding tolerances.
- 1.0 μm
- Measurement accuracy
- 3D
- Spatial alignment verification
Applications
- Main engine – gearbox, including elastic mountings
- Gearbox – tailshaft and intermediate shafts, through to the propeller
- Sag & gap on flanges — stern tube bore alignment
- In dry dock, at the marina or afloat
- Technical report with before/after readings and manufacturers' tolerances
Case studies & field applications
Main engine on conical elastic mountings vs. gearbox
Challenge: Main engine mounted on conical elastic mountings — the vibration isolation system complicates alignment, with dynamic vs. static positioning considerations, a critical gearbox interface, and load distribution across mounting points.
Solution: Laser alignment compensates for elastic mounting deflection, ensuring optimal power transmission and bearing life.
Cooper bearing on high-speed ferry
Laser alignment of a Cooper bearing on a high-speed ferry: precision shaft alignment, vibration reduction, extended bearing life, optimized performance.
Ocean tug stern thruster
Our laser alignment procedures verify angular and offset alignment parameters, ensuring optimal power transmission from motor to stern thrust propeller. This precision work minimizes mechanical stress on bearings and couplings while maximizing thrust output and efficiency during vessel operations.
Marine drivetrain
- 01Gearbox-to-tailshaft alignment. Critical interface alignment for power transmission efficiency — gearbox output flange measurement
- 02Intermediate shaft inspection. Verification of intermediate shaft alignment relative to tailshaft
Field photos
