Power Jacks EMA Actuators - Manual (Page 7)

EMA Linear Actuator
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7
4. Mounting a single actuator
4.1 Unpacking and Installation
Remove the EMA electric linear actuator from its container. Dispose of the packaging
material and the desiccant in an environmentally friendly way. If it is necessary and in
order to avoid damages, please use soft straps to transport or mount the actuator.
In order to avoid damage; do not attach the straps to the inner tube but to the
outer housing of the drive or to the gearbox.
4.2 Mounting
There are two possible ways of mounting the EMA actuator at the gearbox end:
By means of bearing journals for trunnion mounting or clevis mount.
Rear Clevis

Mount the actuator by attaching the desired bracket and pin to the clevis end. Refer
to section 4.2.1 for ram mounting options.

Verify that the ram attachment is aligned throughout the actuator stroke before
connecting the ram. The ram attachment will either be pinned or bolted in place
depending on chosen model.
Trunnion Mount

Mount the actuator by attaching the desired bearings (or mounting feet) to the
trunnion pins. Refer to section 4.2.1 for ram mounting options.

Verify that the ram attachment is aligned throughout the actuator stroke before
connecting the ram. The ram attachment will either be pinned or bolted in place
depending on chosen model.
Always ensure that clevis holes align correctly and that they allow for the
correct angle of pivoting for the application before operating the actuator.
Side loads on the actuator ram should be avoided by ensuring that the
load is guided. The load guide mechanism should resist the torque
developed at the ram by the screw mechanism. A guided ram can be
supplied on request, which utilises a keyway in the inner ram, eliminates
the need for torsional restraint and therefore allows flexibility in the choice
of end fitting.
The desired mounting orientation will be determined when placing the order; this
orientation must be maintained at installation.