... 900 hoursBasalt, Diabase3,500~5,000 hoursSedimentary Rocks Service LifeCalcium Sandstones, Quartz Sandstones1,300~2,000 ... 2,000 hoursCoal5,000~6,500 hoursMetamorphic Rocks Service Life Marble3,500~6,000 hoursQuartz Rocks, ... hoursEclogite, Gneissose2,000~3,000 hoursOther Applications Service LifeMining Debris2,500~5,000 hoursWastes2,800~4 ... : Wheel Loader Tyre Protection Chain (Casting) 23.5-25