Cement Energy and Environment

diameter of 90 em. The "F/M" indicates that crushers of this type are used for fine and medium crushing; i.e., mainly as secondary and tertiary crushers. Depending on requirements, the F/M 90 can be equipped with a feed opening of 180 mm and can achieve throughputs of up to 200 mUh. Thyssenkrupp refined and optimized the Kubria line to increase the crushers' throughput rates, while at the same time standardizing certain modules-a change that will provide customers with both lower prices and shorter delivery times for the Kubria models, according to the company. On the updated models, the cone is mounted in an eccentric bearing and driven by a spiral bevel gear with Cyclo-Palloid toothing, which permits the transmission of high crushing forces while ensuring smooth operation. The hydraulic cylinder beneath the machine serves both to adjust the crusher gap and to protect against overloading of the crusher. fe~,A~er cylinderson the Telsmith 1900 mean JIOtentia lly IP.ss ma 1ntenanc:a wlll be 1eeded . Less Care Required Telsmith describes its T900 cone crusher as a true mine-duty machine. Offering output rates ranging from 550 mUh to 2,100 mUh with up to 15- in. (38-cm) feed size, the company said the T900 offers the largest in-class clearing stroke, the highest in-class crushing force, and features 900- hp performance. Among the crusher's reliability and ease-of– maintenance features, Telsmith noted that the T900 is designed with eight cylinders (versus 12 cylinders in conventional units) for reduced maintenance time and costs. The crusher also offers an improved anti-spin feature that prevents head spin , thus extending manganese life. According to Telsmith, the T900 also has the largest-in-class hybrid bearings, wh ich, unlike roller bearings, offer both a static and dynamic lift to efficiently carry the crushing forces. Hybrid bearings feature a washer and ramp design that replaces the conventional use of a socket, socket liner and head ball-all of which typically require time-consuming removal when servicing the machine. The T900 is equ ipped with a release system that eliminates the need for maintenance-intensive hydraulic accumulators. Further operational cost savings stem from features such as a concave (bowl liner) retention system, which consists of a specially designed and positioned lip ring that centers the bowl and achieves retention without the use of hammers and other hand tools. The T900 also can reduce inventory costs because it enables the use of a single bowl for all liners over its range of operation, providing versatility in any hard rock mining application. CRUSHERS Mctso·~ nflw jnw-c:rus~rr mnmhlnnnc:n plntfntms Mn iW3llnhle '" wrst!\l'IS 1t1 match a1thar slnRie (If tw~ pluc:~ jllw dlt models Upgrade Hardware, Upgrade Performance Metso recently launched a new generation of upgrades aimed at improving the productivity of older crusher models while reducing maintenance costs and bringing equipment in line with 44