What are spring support jacking bolts?

A spring support jacking bolt is a variable spring accessory that aids inremoving the upper limit travel stops. They are usually used in applicationswhere large installed loads are present. They are located directly above theupper travel stop. By tightening the jacking bolt, the installed load can bemore easily transferred to the spring load column.

F-Type Variable With Jacking Bolts
F-Type Variable with Jacking Bolts