Conventional nut and bolt pin retention system ©2007 BRADKEN ® Hitachi EX2500 Crawler Systems OPTI-TRAK ® Improved roller path support Location Ellendale Diamond Mine – Kimberly Region WA Machine Hitachi EX2500 Conditions Highly Abrasive Product Opti-Trak EX2500 Crawler Shoe This Hitachi EX2500 excavator has seen some difficult operating conditions in its service life. It was originally operating at the Nifty Copper mine in the Gre

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