F LE X I B LE
C O U PL I N GS
S E R V O F L E X
High-reliability Metal Plate Spring Format
When jointing a shaft to another shaft, it is extremely difficult to precisely center these two shafts.
It is even more difficult to maintain the centering due to problems such as shaft deflection and shaft thermal expansion as a result
of operating machine equipment, support block distortion after long hours of use, abrasion of the bearing, and for other reasons.
The role of flexible couplings is not only simply to joint the driving shaft and driven shaft but also to resolve the above problems by
selecting appropriate flexible couplings suitable for each purpose.
An optimal design using the advanced finite element method (FEM) is applied for the plate spring shape and
strength design of each model, which are important for the performance of the couplings, and thorough
model analysis is performed by 3D-CAD.
Optimal Design by 3D-CAD and FEM
BENDING
RADIAL
TORQUE
THRUST
SFS-SS
SFC-SA2
SFC-DA2
0
20,000
15,000
10,000
5,000
Pin bush
Types of coupling
Oldham
Cross-slit
Heli-cal
Torsional rigidity
[N·m/rad]
Ultrahigh-rigidity Metal Plate Spring Flexible Couplings
A layered metal plate spring is adopted for the power transmission part of SERVO FLEX, enabling ideal performance
of the flexible coupling, which is rigid in the torsional direction and flexible in the bending asymmetrical and axial
directions.
Summary of Contents for COUPLINGS
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