Steps for height of the base (F-type) spring specified with downward movement:
Step 1: For example, using the PTP-1 100-F with downwardmovement of 1/4 inch, review the loaded length x minimum (9 1/16″) andmaximum (10 1/16″) dimensions.
Step 2: Take the mid-point between those two dimensions whichwould be 9 9/16″
Step 3: Add the load flange thickness which is 1/2″which gives you 10 1/16″
Step 4: Add the amount of downward deflection (1/4 inch) for10 5/16″ as the installed height.
F-Type Variable Spring Support