54
S
E
R
V
O F
L
E
X
S
F
F · S
F
M
Size (SFF-SS/DS)
070
080
090
100
LF [mm]
23.5
25.5
25.5
25.5
Size (SFM-SS/DS)
090
100
120
140
LF [mm]
34
34
36
45
Coupling size (SFF-SS/DS)
070
080
090
100
Pressure bolt
M6
M6
M6
M6
Tightening torque [N·m]
10
10
10
10
Coupling size (SFM-SS/DS)
090
100
120
140
Pressure bolt
M6
M6
M6
M8
Tightening torque [N·m]
14
14
14
34
Size (SFF-SS/DS)
070
080
090
100
S dimensions [mm]
6.5
8.3
7.7
8.0
Size (SFM-SS/DS)
090
100
120
140
S dimensions [mm]
1.1
1.0
1.0
1.0
¢
Mounting
LF
LF
LF
LF
SFF model
SFM model
SFF model
SFM model
S
S
SFF model
SFM model
SFF/SFM models are finished-assembly products. The
concentricity of the right and left inner diameters of the coupling
is set by assembling the parts with high precision using a
specialized jig.
Be careful when handling the product in the case of a strong
shock to the coupling because it might be damaged during use
due to assembly accuracy unable to be maintained.
(1) Make sure that the pressure bolts of the coupling are
loosened, and remove dust, dirt, and oil, 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.)
(4) Tighten the pressure bolts lightly diagonally by using a bore
for rotation prevention.
(6) 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.
(7) Confirm if the pressure bolts of the motor shaft side are
tightened to the specified torque and the value of parallel
offset is small enough.
(10) As in the sequence for the pressure bolts on the motor shaft
side, sequentially tighten the pressure bolts on either the
spindle side or the feed screw side. Finally, tighten the bolts
at the appropriate tightening torque.
(2) When inserting the coupling into the motor shaft, make sure
that no excessive force such as compression, tension, etc. is
applied to the element.
(3) 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 hub of the coupling
(LF dimension) as illustrated below.
(5) 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 parallel offset will be reduced to as close as zero.
(9) The space between flange hubs (S) must be within the
permissible error of the axial displacement in the basic value
table. However, the value is allowable when the parallel offset
and angular misalignment are assumed to be 0 (zero). Adjust
to achieve them to be as small as possible.
(8) Fix the motor mounted coupling in the machine. At this time,
adjust the motor mounting position (inlay) while inserting
the coupling into the spindle or feed screw. Check if there
is no deformation of the plate spring. Also check if the
insertion length of the mating shaft is the dimension LF of the
dimension table.
(11) As a countermeasure against initial loosening of the pressure
bolts, it is recommended to additionally tighten the bolts with
the appropriate tightening torque after a certain period of
operation.
Design Check Items
SFF · SFM MODEL
Содержание COUPLINGS
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