The parallel link undercarriage system (PLUS) from Komatsu America Corp. is an option on the D85EX/PX-18 dozer. Available in three shoe widths (24, 26 and 28 inches), the PLUS system is designed to provide up to twice the life of a conventional undercarriage and features oil lubricated, rotating bushings. 847/437-5800; www.komatsuamerica.com.
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