What are the Variable Spring Types?

Is it practical to try to design a variable spring support or constant spring support for travel less than 0.1″?

November 10, 2011

It would not be recommended for a constant spring to be designed for less than 0.1″ for travel. Variable springs can accommodate that travel. The difference in load will be a function of the spring rate.

F-Type Variable Spring designed for 1/16 Inch Vertical Travel and 1/8 Inch Horizontal Travel
F-Type Variable Spring designed for 1/16″ Vertical Travel and 1/8″ Horizontal Travel

What does the hot or cold setting mean on a variable spring support?

November 2, 2010

The “cold” setting of a variable spring support refers to the installed position and the associated load being carried by the support at that time. The “hot” setting refers to the operating position and subsequently the associated load being carried by the support at that time.

Cold Setting Indicated by the White Diamond on a Variable Spring Support
Cold Setting Indicated by the White Diamond on a Variable Spring Support

What are spring cans?

Spring can” is the general term used to describe either variable or constant spring supports.

Custom Spring Can with Slide Plates
Custom Spring Can with Slide Plates


What is a spring hanger?

A spring hanger is a subset of either variable or constant spring supports that attach directly to structural steel components and are located above the supported member.

Custom Constant Spring Hangers and Pipe Clamps
Constant Spring Hangers

What is the difference between a constant spring and a variable spring?

Variable springs always must have a difference in load between the hot and cold settings. Whereas in constant springs, the load remains consistent. Additionally, in general, constant springs can provide for a higher amount of travel. (Read More in our Technical Bulletin section)

Variable Spring Supports
Variable Spring Supports
C-Type Constant Spring Assembly
C-Type Constant Spring Assembly
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