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Crusher upgrades

First publishedin Aggregates Business Europe
2010 May June
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Metso Superior 60-110E
Metso's new Superior 60-110E offers more reliable primary gyratory crushing
Metso Minerals has upgraded several of its static crusher ranges with new, higher performance models including the new Superior 60-2110E gyratory crusher and the Nordberg MP1250 cone crusher.

The new MP1250 has an installation that uses the same footprint as the MP1000, means greater productivity without additional expense. The 1250HP crusher features design improvements in the mantle locknut make maintenance quicker and easier, and there are also upgrades in the hydraulic tramp protection system, bowl adjustment and removal, and faster hydraulic re-pressurization times.

Existing MP1000 cone crusher users can use Metso's MP1250 retrofit kit to gain the same benefits. The kit includes a new sleeved, high-throw eccentric; large counterweight with bolt-on guard; upper head bushing; head ball; and socket liner.

Design and modelling software has been used to create the new Superior 60-110E primary gyratory crusher which provides a redesigned Spider, a one-piece bottomshell and a new rim liner retention system. Additional benefits include a 20% reduction in weight but with no reduction in capacity, an increase from 514rpm up to 600rpm, the option of being retrofitable (with nominal modifications) and reduced installation and transportation costs.

The design also includes an upgraded mainshaft assembly with a patented bearing ring that releases the pressure of the headnut for mantle change-out. This eliminates the potential for damage to the headnut or mantle and affords simple replacement of one less expensive component.
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