Mitsubishi Electric MDS-E Series Instruction Manual page 51

MDS-E/EH Series Instruction Manual
1 Installation
(c) Installation of coupling
The following describes how to install a coupling using a product by Miki Pulley. Contact the manufacturer for
details of cautions and confirmation.
(i) Make sure that the pressure bolts of the coupling are loosened, and remove rust, dirt, and grease, etc.
from the shaft and the inner diameter part of the coupling. (Grease should be wiped away with a cloth,
etc., or by degreasing as required.)
(ii) When inserting the coupling into the motor shaft, make sure that no excessive force such as
compression, tension, etc. is applied to the element.
(iii) Make sure that the insertion length of the coupling into the motor shaft is kept in the position where the
target shaft is in contact with the entire length of the flange of the coupling (LF dimension) as illustrated
below. (For the variation of models and the length of LF of each model, contact the manufacturer.)
(iv) Tighten the pressure bolts lightly diagonally by using a bore for rotation prevention.
(v) Apply a dial gauge to the flange edge or outer diameter of the motor side. While rotating the motor shaft
lightly by hand, perform hammer adjustment on the flange periphery and edge so that the radial runout
will be reduced to as close as zero.
(vi) While performing hammer adjustment, tighten the pressure bolts in sequence. Finally, use a calibrated
torque wrench and tighten all the pressure bolts at the appropriate tightening torque as shown in the table
below. Also, refer to the following drawing for the sequence to tighten the pressure bolts, and make sure
that the bolts are tightened equally.
(vii) Confirm that the pressure bolts of the motor shaft side are tightened to the specified torque and the value
of radial runout is small enough.
(viii) Install the motor mounted with coupling to the machine. At this time, adjust the motor mounting position
(inlay) while inserting the coupling into the spindle or feed screw. Check that there is no deformation of
the plate spring. Also check that the insertion length of the mating shaft is kept in the position where the
target shaft is in contact with the entire length of the flange of the coupling (LF dimension).
IB-1501229-F
Pressure
Tightening
bolt size
torque (N•m)
M6 14
M8 34
20