Die Spring Definitions
Hole Diameter: The OD = Outside Diameter
Rod Diameter: Springs are made to fit over the rod
Free Length: Length of Die Spring before any load
Preload: = Free Length of the Die Spring reduced by the assembled tool.
Operating Travel: = The distance from the spring length after the operating force was applied.
Deflection: = Change in spring length when force is applied.
Compressed Length: = Computed by subtracting the initial compression operating travel from the free length.
Solid Height: = Height when all the coils are compressed.
Remove Set: = Manufacturing process of closing a compression spring to solid to eliminate load loss in operation.
Permanent Set: = When the spring has load limit has been exceeded.
Elastic Limit: = Maximum compression stress that a die spring can endure without taking permanent set.
Load: = The force built up by compressing the spring.
Stress: = The internal force that resits defection under load.
For quality die springs which you can depend upon for consistency and a long spring life please call Davies Springs tel: 01527 500 710 for a quote