User`s manual

SHAFT ALIGNMENT HORIZONTAL

MACHINES

INTRODUCTION

Shaft alignment: Correction of the relative position of two machines that are

connected, such as a motor and a pump, so that the centre lines of the shafts

form a straight line when the machines are working at normal operating

temperature. Shaft alignment means moving the front and the rear pair of

feet of one machine, vertically and horizontally, until the shafts are aligned

to within given tolerances. A tolerance table is available in the system.

The measurement method is based upon the principle of a reverse indicator

alignment system. Instead of steel bars with dials it uses two laser beams.

Unlike steel bars the laser beams do not have the disadvantage of sagging and

this contributes to the system’s high degree of accuracy.

The Fixturlaser System also has two measurement units but in this case these

are electronic targets rather than mechanical dial indicators. These are built

in together with the laser transmitter in a pair of units, the

Transmitter/Detector units (TD-units). With standard dial measurement

techniques the results need to be graphed out manually and calculations are

needed to establish the corrections required. With the Fixturlaser System all

this is done automatically. Real time alignment values are displayed as the

machine is moved. You can see the effect of tightening a bolt as soon as it

happens.