With Combi ® liners , any profile with the desired face angle can be provided depending on the operational requirement of the mill . Since , the weight of the Combi ® lining system is less than that of the complete steel liners , smaller size fasteners can be used . Wear and tear of metal is much lower in this type of liner due to the suppleness of the total system provided by the backup rubber against impact and attrition motion of the charge .
Another advantages associated with this type of liner is that as this liner wears through , it becomes durable in matters of distribution of rubber and metal . With this , its flexibility increases , gradually making the load intensity lesser . The wear rate also decreases up to some level of metal thickness beyond which , it increases again . This unique feature makes the wear life of Combi ® liner notably higher than the other liners as the force is less and the fastener sizes are smaller as compared to the metal .