Locking nut assembly for a cone crusher

A method of securing a mantle to a head assembly of a cone crusher, comprising:

• providing a locking nut assembly having an inner nut having a plurality of axial bores and an outer nut that is movable relative to the inner nut;
• attaching the inner nut of the locking nut assembly to the head assembly of the crusher;
• inserting a plurality of jackscrews into the axial bores of the inner nut;
• moving the plurality of jackscrews relative to the inner nut such that the jackscrews create a locking force between the locking nut assembly and the head assembly;
• moving the outer nut along the inner nut until the outer nut exerts a force on the mantle;
• and
• moving the plurality of jackscrews away from the mantle such that the outer nut exerts the locking force.

A method of securing a mantle to a head assembly of a cone crusher, comprising:

• providing a locking nut assembly having an inner nut having a plurality of axial bores and an outer nut that is movable relative to the inner nut wherein the inner nut includes a threaded outer surface that engages a threaded inner surface of the outer nut, wherein the outer nut is rotated relative to the inner nut to move the outer nut to engage the mantle;
• attaching the inner nut of the locking nut assembly to the head assembly of the crusher;
• moving a plurality of jackscrews within the axial bores of the inner nut such that the jackscrews create a locking force between the locking nut assembly and the head assembly;
• moving the outer nut along the inner nut until the outer nut exerts a force on the mantle;
• and
• moving the plurality of jackscrews away from the mantle such that only the outer nut exerts the locking force.