MTS Series 244 Actuators - Manual (Page 62)

where:
(MAPRV) = maximum allowable piston rod velocity
6. If the sideload force is applied to the actuator cyclically (sideload varies equally through zero), then
determine the minimum frequency for the sideload force. If the test parameters require a lower sideload
frequency, then you will have to select an actuator with a larger piston rod diameter.
Use the following equation:
where:
(MSF) = minimum sideload frequency
Sample Calculation
The following example uses the sideload calculation procedure to determine the suitability of a Model 244.31
Actuator with a 6 in. stroke (S) for a specific test. The numbered steps of this example correspond to the
numbered steps of the preceding procedure.
1. The following test conditions are determined by the setup configuration and test parameters:
F = 3000 lbf
P = 500 lbf
B = 3.00 in
C = 3.50 in
S = 6.00 in
2. Calculate the actuator bearing load (L).
3. Divide the actuator bearing load (L) by the bearing area constant (E) and ensure that the value is less
than 950 psi.
62 Series 244 Actuators Product Information
Operation