Spider bushing assembly for a gyratory crusher

A gyratory crusher, comprising:

• a spider having a central hub including a tapered internal bore and a bushing support shoulder;
• a mainshaft having an upper end supported within the central hub of the spider;
• a spider bushing positioned between the upper end of the mainshaft and the internal bore of the spider, the spider bushing having a body having a tapered outer surface and an outer flange extending from the outer surface;
• and
• one or more shims positioned between the bushing support shoulder and the outer flange of the spider bushing, wherein the one or more shims are selectively removable to adjust the position of the spider bushing relative to the internal bore upon wear to the spider bushing or wear to the internal bore of the spider.

A method of adjusting the position of a spider bushing within a spider of a gyratory crusher including a mainshaft, the method comprising the steps of:

• lowering the spider bushing into the spider until a tapered outer surface of the spider bushing contacts a tapered inner bore of the spider;
• determining an initial gap between an outer flange of the spider bushing and a support shoulder within the spider;
• removing the spider bushing from the spider;
• installing one or more shims within the spider based upon the determined gap;
• lowering the spider bushing into the spider such that the one or more shims are positioned between the outer flange of the spider bushing and the support shoulder of the spider;
• and
• securing the spider bushing to the spider.