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ball and journal bearing The journal bearing has long been the brawn of the turbocharger, however a ball-bearing cartridge is now an affordable technology advancement that provides significant performance improvements to the turbocharger. Ball bearing innovation began as a result of work with the Garrett Motorsports group for several racing series where it received the term the ‘cartridge ball bearing’. The cartridge is a single sleeve system that contains a set of angular contact ball bearings on either end, whereas the traditional bearing system contains a set of journal bearings and a thrust bearing our blog http://engmania7.blogspot.com/ our facebook page https://www.facebook.com/Egy.Mechanical.Engineer our google plus https://plus.google.com/u/0/b/116672434216174352691/+MechabooksBlogspot/posts On twitter https://twitter.com/EngMania7 youtube channel http://www.youtube.com/c/EngineeringMania2