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RADIUS LLC
4922 Technical Drive
Milford, Mi 48381
SERIES A
OPERATION AND
INSTRUCTION MANUAL
Closing of the single action actuators is obtained by the force the springs in the chambers of the covers
exercise on the pistons, forcing them to move in opposite directions drawing them together, achieving the
same result as in the double action actuators.
If a change in the direction of rotation is required, it is sufficient to rotate the pistons 180°.
2.
Manual Operation
In the event of an air supply failure, the RADIUS actuators can be operated manually. This can be done
using an adjustable wrench on the upper part of the actuator shaft, turning it in the desired direction.
RADIUS also offers a varied range of declutchable gear operators for this operation. For more information
consult RADIUS.
WARNING: MAKE SURE THAT THE ACTUATOR IS NOT OPERATING
AUTOMATICALLY WHEN A MANUAL OPERATION IS BEING
PERFORMED.
NOTE: A PROPER RELEASE OF AIR IS REQUIRED FOR MANUAL
OPERATION. THIS REQUIRES THE DISCONNECTION OF THE AIR LINES
OR THE USE OF THREE WAY VALVES AT THE AIR PORTS.
STANDARD ACTUATION TIMES
The normal actuation times for RADIUS actuators are shown in the following table. The times are in
seconds and they represent an average of the times in a non-load condition at a pressure of 80 psi. The
times shown are for double and single action actuators. The closure times for the single action actuators
depend on the number of springs used.
