b'SuperSpringsSelection and Use Take A CloserLook .As the ratio of preload to total improved by drilling the springdeflection increases, spring life pockets deeper and selecting the Most die spring manufacturers willincreases. We recommend that you next longer spring. claim that based upon in-house testing,use a generous preload in your tool The chart below and the spring their spring outperforms thedesign whenever possible. tables presented on the following competition.As the ratio of total deflection to pages are designed to help you To eliminate all bias, we went outsidefree length decreases, spring life quickly select the die spring best and asked the prestigious Springincreases. Spring life can often be suited to your needs. Research and Manufacturers Association to life test our SuperSpringagainst the competition. The results ofthis independent test, certified underFree Length Test Certificate No. 002860, prove*OperatingHole Rod Load the long-life performance of ourDia. Dia. SuperSpring:Initial The springs were cycled between lengthsLoad corresponding to the catalog maximumCompressed Length Operating Preload deflection conditions of 23.97mm and 18.80mmTravel at a test speed of 3000 cycles/minute.Converting Compressed Lengths to Free Lengths The results have also been analyzed by means ofthe weibull technique, and a value of B10(the life in cycles which 90% of springs wouldbe expected to survive without failure)determined for each batch.The B10 values are:READY SuperSprings333,139RAYMOND springs 152,159DANLY DIE SET springs 117,706SuperSpringsyellow) code (colorReadySprings Set yellow/green)Die codeDanly (colorSprings (color code green)Raymond*1.Every effort was made to test representativesamples. SuperSprings were randomly selectedfrom stock, and competitors springs were suppliedagainst a purchase order. The possibility remains,however, that these samples may somehow not berepresentative.2.This is a test on only one spring size and onespecific set of operating conditions, performed ina laboratory environment; it may not be typicalof the way you use springs. We urge you to run acomparison life test in your own plant andcompare the fatigue life of our SuperSpring tothose of our competitors under actual 3manufacturing conditions.'