Vertical Operation - SMC Networks CY3B Series Operation Manual

2-2) Moment at stroke end
If the rodless cylinder is used for the load
with large inertia, the following operating
failures may be caused at stroke end.
As shown on Fig. 6-1, such a large inertial
load tries to keep on linear motion on the
guide thought the cylinder body stops at
stroke end. This produces the moment
applied to the cylinder body.
Load
Body
Fig. 6-1 Moment produced at stroke end
If the cylinder is kept operating in such a
condition, the wearing of external slider is
worn so much as to cause operating failure.
To avoid occurrence of the failure, as
shown on Fig. 6-2, use both of shock
absorber and stopper at the mounting space
for the load to absorb kinetic energy of the
load and adopt the mounting bracket longer
than center of axis of cylinder to prevent
the moment applied to the cylinder body.
※
Shock
absorber
※
Stopper
Body
※ Mount the stopper and shock absorber on the
part near center of gravity of external slider.
Fig. 6-2 Countermeasure for moment at stroke end
Guide rod
Cylinder tube
Rotation moment
Load
Bracket
Guide shaft
Clearance
３．Vertical Operation
If the cylinder is operated in vertical direction,
consider the same points as section 2.
3-1) Allowable load
Vertical operation makes the load act to
holding force of magnet and allows the load
less than horizontal operation.
Table 1 shows the allowable load for each size.
Table 1 Allowable load for vertical operation
Cylinder
tube Model
I.D. (mm)
φ6
CY3B6
φ10
CY3B10
φ15
CY3B15
φ20
CY3B20
φ25
CY3B25
φ32
CY3B32
φ40
CY3B40
φ50
CY3B50
φ63
CY3B63
Note) Operation of cylinder at pressure over
max. operating pressure may cause the
piston to come off (drop of load).
Keep max. operating pressure.
Cylinder tube
Center of axis
10
Max.
Allowable
Operating
load
pressure
(kg)
(MPa)
1.0 0.55
2.7 0.55
7.0 0.65
11.0 0.65
18.5 0.65
30.0 0.65
47.0 0.65
75.0 0.65
115.0 0.65
A