SMC Networks CY3B Series Operation Manual page 10

The misalignment can be checked by the
following procedure.
1) After installation of cylinder to application,
increase pressure of regulator gradually
before checking operation of cylinder at
operating pressure, and then calculate
min. pressure which enables smooth
operation of cylinder over full stroke.
2) The min. operating pressure obtained
after mounting of load (actual min.
operating pressure) is different from
one of independent cylinder, but the
difference should be focused.
3) The actual min. operating pressure is sum
of "sliding resistance of cylinder", "force to
operate load" and "sliding resistance of guide".
(Fig. 4)
This means when misalignment is not
compensated enough, sliding resistance of
guide increases excessively. Additionally,
sliding resistance of external slider increases
and causes wearing to wear so much as to
induce operating failure.
Adjust to minimize this increase
0 0.1 0.2 0.3
Fig. 4 (Reference)
8
"Sliding resistance of cylinder(P1)"
Sum of "P1" and "force to operate load"
Actual min. operating pressure
Operating pressure
(MPa)