Global ꞏ June 2019

Coal mine dragline excavator chain rails with extended service life

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Description of the case

Sliding rails for dragline excavator chain passes over sliding wear bars without lubrication. Sometimes small particles of coal,rocks and sand get stuck in beetween. At combination of sliding /squeezing wear. Hardox® 600 works much better than the original Mn steel. The service life is improved from 2 to 6 months.


Case details

Key success factors

Improved service life: 300%

New service life: +300%

New solution
Hardox® 600, : 20 mm
Old solution

Mn casting: 20 mm

Industry and wearpart
Coal and energy , Dragline buckets , Wear bars