Our standard and corner baseplate casters absorb shock in a way that no other caster can - for free!  As shown in the graph to the right, an Atlas 1000 Series caster absorbs about 2/3 more shock than a competing caster.  Not only does this mean that your equipment will be better protected with Atlas, but the casters themselves can withstand far more abuse.  The same can't be said for our competition, their bearings were ruined by the end of testing. 

This passive form of shock absorption comes naturally from taking advantage of the material properties of our stainless parts.  When an annealed stainless is cold worked into the shape of our double drawn kingpin rivet or our tempered stainless moving parts are formed into their respective shapes, the metal becomes harder, much stronger, and the elastic modulus decreases.  Effectively, our thin, lightweight parts become stainless steel springs that absorb shock though a combination of passive deflections and flexural elongations.  The case-hardened low carbon steel used by our competitors exhibits none of this behavior, it is just thick, heavy, and clunky.

The passive shock absorption of our casters does not match the performance of shock absorbing casters with die springs etc., but it may be more than enough for your application.  

The casters were loaded with 800 lbs. (zero in above graph) and the vertical force impulse was captured as they hit a 2.5 mm obstacle at 3 mph.  The wheel size, wheel material, and wheel bearing are held constant.  The force shown is that  transmitted to the supported equipment.

The Hollow Kingpin and Stem version also absorb shock better than the competitors model, however, constraints upon the kingpin or lack thereof reduce their performance.