brand new automatic protection device provides the machine with vibrating, oil filtering and warning system; new type oil filting system ensures the bearings and other transmission system are not abraded and peolong their service time; choice wearble materials prolong the service time of the machine by 40%. So the cost is lowerd by more than 40%. SBM VSI Crusher has replaced hammer crusher, roller crusher, roller ball mill, etc. and become the mainstream equipment in sand manking business.