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2.2 Connection with counterpart machine
(1) Foundation work
In order to minimize the vibration and misalignment during operation, strong foundation is
required. If foundation is incomplete, machine will vibrate and bearing life will be shortened,
to which please pay attention. The most ideal foundation in order to prevent generation of
vibration is a strong concrete foundation but
if such concrete foundation cannot be made
because of counterpart machine and
relation with the place, install the motor on
the steel frame with bolts firmly arranging
that the motor shaft exactly level (or
perpendicular for a vertical motor) surely.
For the base, achieve the level degree of
0.2/1000mm or less accurately. Also, clean
the surfaces of concrete foundation / steel
frame and of the leg of motor for ideal
installation.
(2) In case of flexible coupling
1) Mark the matchmarks on the outer
surface of coupling.
2) In order to rotate the couplings together,
connect couplings of the counterpart
machine and of the motor by one bolt.
3) Fix a dial gauge firmly to outer surface of one coupling. (Fig. 2)
4) Move the matchmark of the coupling to the top and measure the dimension-g by clearance
gauge and dimension-h by dial gauge.
5) Rotate the coupling and carry out same measurement as above item 4) at every 90 of
quadrant positions.
6) Adjust using shim plates so that the difference between maximum and minimum of the
measured values will be 0.03mm for both g and h. Every time the measurement for
adjustment is carried out, tighten the installation part with bolt sufficiently. When dial
gauge cannot be fitted for a small motor, apply the stretch to the outer surface of one
coupling and measure the clearance between stretch and the other coupling.
Stretch
Fig. 2
h : Parallelism
g : Eccentricity
Matchmark
