QuantiServ has a long experience in carrying out various laser alignment checks and measurements for a wide range of applications. Our technicians are well-trained and very skilled and are able to attend ships in service, marine new buildings under construction, power generation plants and any other industrial facility.

The equipment that we use is state-of-the-art and very versatile. We can measure all common geometric measurements such as roundness, flatness, straightness, squareness, offset and level. The longest distance that we can measure with high accuracy is 40 meters.

Laser alignment check of a rudder stem box
Laser alignment check of a rudder stem box

Mostly we carry out:

  • Flatness checks for foundations or flanges
  • Roundness and bore alignment measurements for stern tubes, intermediate bearings, engine blocks, turbine casings, etc
  • Coupling and shaft alignments for electro motors, alternators, steam turbines, pumps, fans, etc

Flatness checks

We measure straightness, flatness, parallelism and perpendicularity on a wide variety of structures. Customers need accurate data for different reasons: during equipment installation and commissioning, for failure analysis, to carry out preventive maintenance or during repair work. Our laser alignment experts reliably acquire these data and present them in an unambiguous, easy to understand way.

If the laser measurement shows that any remedial action is necessary – realignment, line boring, flange facing – then we can of course provide this service too. The benefit to the customer is that he gets all the necessary services from one party, which ensures that there are no misunderstandings at the interfaces.

Typical examples are landing (slewing) surfaces of deck cranes, large flanges in the oil and gas industry, as well as engine foundations and guide rails.

Roundness and bore alignment measurements

Full bores and half bores can be measured with relative ease to determine straightness, roundness, parallelism and alignment. Typical applications for roundness and bore alignment measurements include:

  • sterntube, intermediate bearing and rudder bearing alignment checks
  • alignment and deformation measurements over any number of bearing pockets or saddles
  • following a main bearing failure (overheating), to verify whether the alignment has changed and/or if the main bearing housing has become oval

This kind of laser alignment check is very often carried out to determine whether line boring is necessary and, once the line boring has been completed, to accurately document its result.

Verifying the alignment of the cam shaft bearing pockets on a four-stroke diesel engine
Verifying the alignment of the cam shaft bearing pockets on a four-stroke diesel engine

Alignment of rotating shafts and couplings

The accurate alignment of moving machinery components is very important. At the time of installation and commissioning, the equipment should be aligned according to the manufacturer’s recommendations and tolerances. During service, the alignment should be checked regularly and corrections should be made if necessary. A proper alignment has many very real advantages:

  • minimize undue stresses induced on the equipment and therefore reduce bearing, seal and coupling wear
  • increase component life time
  • minimize vibrations
  • limit the heat generated in bearings and couplings
  • reduce the failure rate
  • and last but not least: Proper aligned shafts reduce transmission losses! In the case of an electromotor driving a pump this means a lower electricity bill and in case of a propeller shaft it means either more power available for transmission or reduced fuel costs.

QuantiServ offers laser alignment services either as a stand-alone service, for example to verify the alignment of new equipment that was installed or to determine a cause of failure, or then in combination with machining work such as line boring, flange facing, coupling bolt reaming or epoxy grouting.

Image Gallery

Laser alignment check on a stern tube, done in the early morning hours to mitigate deformation of the hull caused by sunshine
Laser alignment check on a stern tube, done in the early morning hours to mitigate deformation of the hull caused by sunshine
Laser alignment check of camshaft bearing pockets
Laser alignment check of camshaft bearing pockets
Laser alignment check of steerable thruster well insert on a cruise ship
Checking the flatness of a steerable thruster well insert on a cruise ship
Measuring the alignment of the main bearing pockets on a four-stroke engine
Measuring the alignment of the main bearing pockets on a four-stroke engine
Laser alignment of a flexible coupling
Checking the alignment of a flexible coupling
Stern tube alignment check
Stern tube alignment check