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MEI Online: Comminution: Latest News: April 26th 2010


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:: Metso Releases Primary Gyratory Crushers

Metso has released its re-designed 60-110E primary gyratory crusher. The new primary crusher features a reconfigured Spider, one piece bottomshell as well as a new rim liner retention system. The crusher also includes a 20% reduction in weight but with no reduction in capacity, an increase from 514 rpm up to 600 rpm, the option of being retrofitable (with nominal modifications) and reduced installation and transportation costs.

The 60-110E’s spider was redesigned to remove stress risers and concentrations, producing a more reliable design. The Spider now features an arched opening to reduce material bridging. New arm shields and Spider cap provide improved protection to the Spider. The redesigned single piece bottomshell reduces components and installation time. The new topshell is designed to eliminate vertical rib stress risers while at the same time utilizing horizontal bands to protect against concentrated loads.

A high strength banded construction provides easier operation, and the removal of vertical ribs further decreased stresses. The primary crusher’s new rim liner retention system utilizes bars and clips welded in place, which connects the spider rim liners together, allowing for easy installation. No bolts are required, making the rim liners easily replaceable and are tied together to act as one piece. Metso’s crusher also features 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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