SMC Networks CY3B Series Operation Manual page 7

Ⅰ-b) The misalignment between cylinder body and guide (orbit) may be caused depending on machining
accuracy of the space for mounting. Therefore, the installation must be performed to
compensate the misalignment. The following two show the example with or without concern about
misalignment respectively.
Wrong example
Cylinder External
slider
tube
Work
The work is directly applied to the cylinder as
excessive moment.
If the load base is directly mounted on external slider, the misalignment produced between the
load base and cylinder is not compensated and may cause operating failure. The following shows
the solution to compensate the misalignment and deflection created by self-weight of cylinder.
Wrong example
Detail of A
The load base is directly mounted on the cylinder
by bolt and deflection of the cylinder and parallelism
between the cylinder and guide can' t be adjusted.
Guide
M(Moment)
Fig. 3-1 [Ex.-1]
External slider
Direct mounting by bolt
Fig. 3-2 [Ex.-2]
5
Correct example
External slider Cylinder tube
Bearing
Guide shaft
Work
Ａ
Slide table
(load base)
LM guide
Correct example
Clearance A
Detail of A'
Clearance
Produced moment
Is absorbed by
bearing.
M
Center
of axis
Gap
Mounting
bracket