LAH-80 Series Technical Document
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5-7 Vibration resistance
The vibration resistance of the linear actuator is vibration acceleration of 24.5m/s
2
(2.5G) (frequency 10~400Hz)
in up/down, left/right, and forward/backward directions. It can be used with this value or less.
Figure 8
5-8 Life
The life of the linear actuator LAH-80 Series is the fatigue life of the precision ball screw used. The life can be
obtained from the following formula.
Ls = x 8.65 x 10
10
(km)
Ls: Total travel distance life (10% failure probability) (km)
Fa: Thrust (axial load)(N)
Fw: Load coefficient (coefficient depending on operation conditions)
Smooth operation with no impact
Normal operation
Operation with impact/vibration
1.0 to 1.2
1.2 to 1.5
1.5 to 3.0
Ls
(total travel distance life): The travel distance in which 90% of linear actuators can be operated without
stripping due to rolling fatigue (ball screw) when they are operated under the same condition.
The life becomes considerably shorter for
movement with vibrations and impacts.
CAUTION
If positioning accuracy is required, use it with no
vibration.
CAUTION
1
(Fa x fw)
3
Left
Backward
Forward
Up
Down
Right
