Manganese Steel made Cone Bowl Liner breaks rock by squeezing the rock between an eccentrically rotating spindle, which is covered by a wear resistant mantle. The Bowl Liner is designed with enclosing concave hopper, covered by a manganese concave or a bowl liner. The Bowl Liner ensures that the spring release system of a cone crusher acts an overload protection that allows tramp to pass through the crushing chamber without damage to the crusher. Manganese Steel made Cone Bowl Liner ensures ease of adjustment and requires low maintenance.