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8. Please do not operate body itself by the piston rod fixing.
An excessive load joins the piston rod, and it causes defective operation and the longevity
decrease.
9.
When the actuator is operated at high speed while it is fixed at one end and free at the other
end (flange type, foot type, double clevis type, direct mount type), a bending moment may act
on the actuator due to vibration generated at the stroke end, which can damage the actuator. In
such a case, install a support bracket to suppress the vibration of the actuator body or reduce
the speed so that the actuator does not vibrate.
Use a support bracket also when moving the actuator body or when a long stroke actuator is mounted
horizontally and fixed at one end.
10. Avoid using the electric actuator in such a way that rotational torque would be applied to
the piston rod.
If rotational torque is applied, the non-rotating guide will become deformed, thus affecting the
non-rotating accuracy.
Refer to the table below for the approximate values of the allowable range of rotational torque.
Allowable
rotational torque
(Nm or less)
LEY25**
LEY32**
LEY63**
1.1
1.4
2.8
To screw a bracket or a nut onto the threaded portion at the tip of the piston rod, make sure to
retract the piston rod entirely, and place a wrench over the flat portion of the rod that protrudes.
Tighten it by giving consideration to prevent the tightening torque from being applied to the
non-rotating guide.
11. When rotational torque is applied to the plate end, use within the allowable range. [LEYG series]
Excessive torque could cause the guide rod and bushing to be deformed, causing looseness of the guide or
increase in sliding resistance.
The applied rotational torque should be less than the "Allowable Rotational Torque of Plate" in the table below.
Stroke [mm]
30
50
100
200
300
Allowable
Rotational Torque of
Plate[Nm]
LEYG25M
1.56
1.29
3.50
2.18
1.36
LEYG32M
2.55
2.09
5.39
3.26
1.88
LEYG25L
1.52
3.57
2.47
2.05
1.44
LEYG32L
2.80
5.76
4.05
3.23
2.32
12. When the fluctuation of load is caused during operation, malfunction/noise/alarm may
occur.
The tuning of gain may not suit for fluctuation load. Adjust the gain properly by following the manual of
driver.