Exlar Curtiss-Wright Tritex II Series, Installation And Service Manual

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Curtiss-Wright | TRITEX II AC 75 Rev. K PN61928 7/12/2022 24
Mechanical Installation
Mounting and Operating Considerations
Every effort should be made to minimize misalignment of the
output shaft in all actuators (linear and rotary) and especially
misalignment that results in side loading on linear actuators. Any
misalignment will decrease the life of the components within the
actuator or create problems with external components or
adversely affect performance.
Excessive side load on the output rod of the
actuator will dramatically reduce the life of the
actuator and should be avoided completely. Side load can
be caused from misalignment or loading that is not inline
with the actuator output rod.
Stroke length and centering must be carefully considered to
avoid hitting physical travel limits in linear actuators, including
over travel in fast motion profiles. Homing to end of travel may
be done at very slow speed and limited force, but homing
manually or to a limit switch, or maintaining continuous Logic
Power or using the absolute position feedback option to avoid
frequent homing should be considered.
Do not exceed the physical travel limits of T2M Series
Actuators. Doing so will result in an internal end-crash that
will physically damage the roller screw and the internal components
of the actuator.
Lubrication
The T2M and T2X Series linear actuators are shipped from
the factory fully greased and ready for installation. Exlar
recommends using Mobilith SHC 220, a high performance,
extreme-pressure grease. The unique physical properties of the
synthetic base oil provide outstanding protection against wear,
rust, corrosion and high or low-temperature degradation. For
operation below -20
⁰
C contact Exlar for special grease & de-
rating considerations.
Note: If the actuator with which you are working has a preloaded follower
(PF option), do not remove the nut or screw. Contact Exlar Corporation
and arrange to have maintenance and/or re-lubrication performed on the
actuator by an authorized Exlar repair facility.