
B–65152E/03
4. NOTES ON INSTALLATION
BCATLTLON EOT TFC α
37
CAUTION
1 Use a coupling which can absorb thermal expansion in the
axial direction of the motor mating shaft so that no load is
applied in the motor axial direction.
(Examples)
– Diaphragm coupling (EAGLE INDUSTRY CO., LTD.)
– Oldham’s coupling
– Gear coupling
2 Set the torsional rigidity of the coupling to an appropriate
high value.
If the torsional rigidity is low, vibration may be produced
during orientation.
3 It is important to perform centering and obtain parallelism to
avoid having to recourse to the flexibility of the coupling.
At high speeds, any eccentricity may cause the bearing to
fail prematurely.
4 Check all machines before shipping to confirm that the
vibration acceleration is 0.5 G or less when measured using
the method described in CAUTION 4 of Section 4.1.
4.4
WHEN A MOTOR IS
DIRECTLY
CONNECTED TO A
SPINDLE VIA A
COUPLING