I don't know but just the same I now run the jaw crusher instead of wheel loader. It's an old pioneer that got converted to a side discharge and it's a pretty dang good crusher. A couple questions though, we have been running some mud through so I have to clean the feed plate off every now and again and well the vibration makes it easier but it shakes the holy hell out of me! Any other easier ways to keep material flowing smooth? Oh and my right hand is falling asleep real easy now, any correlation with the vibes?