Installation Bracket - Woodward EPG 512 Installation And Control Choices

Installation & Control Choices for EPG Actuators Application Note 50530
Figure 3. Samples of Actuator Brackets

Installation Bracket

The bracket for an EPG actuator should be designed to provide solid support.
The location should be as vibration free as possible. Most Woodward-built
brackets are constructed of 10-gauge sheet steel with the edges bent at 90
degrees for stiffness. Steel plate at least 6 mm (1/4 inch) thick is generally heavy
enough to support the actuator, although additional bracing is sometimes
required if the plate is much larger than the actuator. The 4024 actuator is
heavier than the 1712/24 actuator and will generally require a heavier bracket.
The actuator should be protected from excessive heat. The actuator is rated for
ambient temperatures from –40 to +93 °C (–40 to +200 °F). The mounting plate
should not conduct temperatures in excess of 93 °C/200 °F. to the actuator.
For a 1712/24 or 512/24, drill four 5/16 (0.312), letter "O", or 8 mm holes in the
mounting plate and attach the actuator with 0.250-20 grade-5 screws, 0.250
washers, and lock washers. Minimum thread engagement into the actuator
should be 8 turns or 0.375 inch. Torque the 0.250-20 bolts into the aluminum
actuator case to 2.8 N m (25 lb-in).
For a 4024, drill four 25/64 (0.390), letter "W", or 10 mm holes in the mounting
plate and attach the actuator with 0.375-16 grade-5 screws, 0.375 washers, and
lock washers. Minimum thread engagement into the actuator should be 8 turns or
0.500 inch. Torque the 0.375-16 bolts into the aluminum actuator case to 10 N m
(90 lb-in).
4 Woodward