LAH-80 Series Technical Document
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4-3 Load direction
The load (thrust) direction can be the push-out and pull-in directions of the output rod.
If the load direction changes between the push-out and pull-in directions of the output rod, especially the reverse
positional accuracy becomes poor because the elastic deformation of each component of the linear actuator is
involved. If positioning accuracy is required, use only one of the directions.
4-4 Connection of the output rod to the paired unit
To connect the output rod to the
paired unit
, use M8 hexagon socket head bolts (strength category of 10.9 or higher), and
select a bolt length such that the thread engagement of the bolt and output rod tap hole becomes 8mm or more.
Also, use
φ
12h7 spigot or the output shaft rod outer diameter
φ25h7
to eliminate displacement of the core with
the paired
unit.
A commercial rod end can be used for connection. Secure it so that there is no shaft center displacement.
4-5 Push-out and pull-in limits of the output rod
a) The push-out and pull-in limits must be within the range as shown in Figure 15.
The linear actuator has the (+) end limit switch for the push-out limit and (-) end limit sensor for the pull-in
limit. Figure 15 shows the factory-shipped operating points of each.
b) Hitting the mechanical limits as shown in Figure 16 may cause poor performance and shorter life, resulting
in internal damage in some cases. Therefore, control must be provided so that the motor stops
immediately when any of the limit sensor trips.
c) During check operation such as a test run and control sequence, perform operation check with low speed
(feed speed of 0.5mm/s or less) and no load. It will mitigate damage of errors in the operation program or
runaway due to wrong wiring.
◆
Provide a detent mechanism or linear guide mechanism
to the target machine so that no torque or radial load is
exerted to the output rod. Failure to do so may cause
failure, poor accuracy, or shorter life.
◆
Grease is applied lightly on the output rod for smooth
sliding.
CAUTION
Available range
(+) end limit operating point
(-) end limit operating point
Figure 11
Figure 12
