Heavy Duty Track Bolts Nuts M20x80mm Hyundai R220 R290 Excavator Undercarriage Corrosion Resistance​

Heavy Duty Track Link Bolts M20x80mm - specifically designed for Hyundai R220 and R290 Excavator Undercarriage applications.

Sand abrasion destroys 73% of track bolts in Middle Eastern operations. Our dune-armored solution features HVOF-sprayed WC-17Co coating (≥1,100 HV hardness) that outlasts standard zinc plating by 8 times. The reverse-taper shank design prevents micro-sand ingress at thread roots - the primary cause of seizing.

• 0.008mm surface roughness (RA) minimizes friction wear
• Passes ASTM B117 2,000hr salt fog & DIN 52348 dust erosion tests
• OEM-equivalent for Caterpillar D9T, Komatsu D375 dozers

Case Study: Dubai's Al Naboodah Group reported 14-month service life vs 3 months for generic bolts.

Meeting EU REACH/ROHS directives, our eco-friendly Dacromet 900 bolts use chromium-free nanotechnology. The Zn-Al flake matrix creates sacrificial anodic protection while sealing micro-pits with SiO2 nano-ceramics. 100% recyclable with carbon footprint 62% lower than hot-dip galvanizing.

• ISO 12944 C5-M corrosion class (25+ years marine exposure)
• FDA-compliant for wetland operations
• Compatible with John Deere 850J, Hitachi ZX490LC-6

Sustainability Metrics: 98% reduced hexavalent chromium emissions during production.