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”Your Direct Source for Plant Maintenance,
Reliability, Test & Measurement”
1010
E. Main Street, League City, TX USA 77573 Phone: 281-957-5283 Fax:
281-334-4255
www.reliabilitydirectstore.com
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Laser Alignment
Applications in the Ship industry 
For
the building of new ships and repairs
There are many applications for laser measurement at a
shipyard, such as when building new ships, repairing damaged ones and for
regular maintenance.
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Alignment
between propeller shaft and gearbox
Alignment of the propeller shaft and the gearbox is
carried out with shaft
alignment equipment, with measuring units mounted on either side of
the coupling. If the ship is in water, the Horizontal program must be
used, because it does not use the electronic inclinometers, which are
used in the EasyTurn™ program (the inclinometers are affected by the
ship’s movements in the water). The result of the measurement shows how
to shim and adjust the gearbox to get the drive line straight.
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Alignment
of bearing journals in relation to stern tube
The alignment of bearing journals in relation to the
stern tube (or gearbox) is carried out using Linebore
equipment, where the laser transmitter is mounted on the axial
surface at one end of the stern tube (or the gearbox flange) and the
detector unit is placed in the bearing position. Measurement values are
recorded in two positions for each bearing position (the detector unit is
rotated through 180°), the measurement program calculates and then
displays the position in the vertical and horizontal directions.
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Measuring
the flatness of a slewing ring bearing
When measuring the flatness of a slewing ring bearing for
a crane, the D22
(or D23)
laser transmitter is used. The transmitter is secured to the flange with
its magnets. The detector unit is placed at the marked points all around
the flange, and the measurement values are recorded at each point. Three
zero (reference) points with 120° pitch are calculated by the system. The
results can be displayed as a 3D graph or in figures. You can move the
zero points to find values that entail the least tooling work.
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Other
applications
Maybe you have other measurement and alignment problems
to be solved. It is very likely that we already have run into them! Don’t
hesitate to contact us for a discussion about a solution.
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 Download the PDF
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