Superior Contaminant Exclusion: A multi-stage defense system is employed:
Heavy-Duty Wiper Seal: An aggressive, multi-lipped wiper seal is the first line of defense, scraping mud, grit, and abrasive particles from the rod surface before it can retract into the cylinder.
Primary and Secondary Rod Seals: These work in tandem to ensure zero external leakage, maintaining hydraulic system cleanliness and performance.
Wear Bands (Guide Bands): Installed on the piston and rod guide, these bands absorb side loads, centralize the components, and prevent metal-to-metal contact, drastically reducing wear on the cylinder tube and seals.
This 349-4139 arm cylinder is used for 324D 326D 326D2 excavator.
EXCAVATOR
324D L 324D
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