Good question! Sorry I can't give an accurate answer but wear rates appear to be affected by the type of crop ie. lentils with their sharper edges on the seed leads to higher wear rates. I think, from experience that roughly 2000 tonnes of lentils plus, say 3-4000 tonnes of wheat thru the machine [ N7- R62 ] would need new ac. roll sections. Just wheat _ barley would be a lot higher tonnages. We have replaced the rubber sections with full width folded stainless steel scalloped flutes that are made here in Oz. They just bolt on like the standard rubber sections. They work quite well but ours need a couple of very minor changes to bring them up to the same performance as the rubber flutes. Have used these for 2 seasons. [ Number 3 season was a full scale drought and we did not harvest anything at all. Just went for a scenic drive across the 2400 acres and then put her away! ] I hope somebody else on the site can provide better info on performance and price, USA, on the accelerator rolls than this. Cheers!
