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Design Check Items
SFS MODEL
LG
S
D
¢
Centering method
Fix the dial gauge on one side of the shaft and read the run-out
of the outer periphery of the other flange while rotating the shaft.
The models (SFS-S and SS types) with one pair of elements (plate
springs) do not allow parallel offset and should be moved close
to 0. For Models whose full length can be set freely (SFS-G type),
use the following formula to calculate the permissible parallel
offset values.
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Parallel Offset (
ε
)
Fix the dial gauge on one side of the shaft and read the run-out
of the end surface near the outer periphery of the other flange
while rotating the shaft.
Adjust run-out B so that (
θ
≤
1°) can be accomplished.
ò
Axial Displacement (S)
The face-to-face dimension between flange hubs (S) must be
within the permissible error of the axial displacement in the basic
value. 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.
* The S dimension of SFS-S/SS is a dimension between two
flange hubs. The S dimension of SFS-W/G/DS is a dimension
between a flange and a spacer.
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Anglular Misalignment (
θ
)
ε
= tan
θ
× LG
ε
: Permissible parallel offset
θ
: 1°
LS: Full length of space
S : Dimension between flange
on one side and spacer
LS = LS+S
B = D × tan
θ
B: Run-out
D: Flange outer diameter
θ
: 1°
¢
Dismounting
(1) Confirm if any torque or axial direction load does not act on
the coupling. (Torque may be applied to the coupling when a
safety break control system is activated. Make sure no torque
is applied to the coupling.)
In the tapered shaft fastening method that tightens the
pressure bolts from the axial direction, the sleeve has a self-
locking mechanism so that loosening the bolts does not
release fastening of the flange hub and shaft. (In some cases,
fastening power could be released by just loosening the
pressure bolts.) Therefore, a space for inserting a dismounting
screw must be considered in the coupling design phase. If
there is no space in the axial direction, contact us for further
information.
(2) Loosen all the pressure bolts about 2mm from the bearing
surface.
About 2mm
About 2mm
¢
SFS-S/W/G type
¢
SFS-SS/DS type
(3) Remove two pressure bolts loosened in (2) and insert them
into the two screw bores for dismounting located on the
sleeve. Tighten them alternately little by little. Fastening of the
flange hub and shaft will be released.
About 2mm
About 2mm
Содержание COUPLINGS
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