Curtiss-Wright | FTX Series Rev. C PN71855 5/26/17
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Vertical Oil Fill Example
In this example a 300mm stroke FTX215 is running oil fill, rod down in
the last 20mm of stroke. It is a high speed, low amplitude press with the
cycle running 1-2 mm movement per press at high cycle rate. Most of the
input power is being used in the last 20mm of stroke but the actuator can
cycle once every hour to move tooling. Oil would only need to be filled up
to the nut where the majority of the work is being performed by the roller
screw. The vertical oil fill table shows the bumper and nut height with
each actuator. In the example, the oil level needs only to be above the
nut level in the last 20mm. With the bumper height being 24mm, add in
the additional over travel of the actuator of 25mm plus the distance of the
working area, 20mm in this case. After this, add in the height of the nut
(199.2mm) to get the total oil level from the faceplate. The oil level
should be at 269mm from the faceplate.
