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JSC “Kazakhmys corporation” Ltd., “Zhaman-Aibat” mine

In 2005 MIDIEL Ltd. has carried out modernization of the two friction hoist machines CSh4x4 and CSh2.1x4 with radial brakes for installation of the disc brakes at “Zhaman-Aibat” mine of JSC “Kazahmys corporation”, Kazakhstan Republic. The hoist machines had been delivered in 1982 and 1983 and had been stored at the customer’s warehouse.

Modernization has concerned the reconstruction of rope-guiding sheaves, with connection to the brake discs and installation of disc brakes system on the existing frames. All the works were done simultaneously with mounting of the hoist machines on site.
The experience of modernization of the CSh4x4 and CSh2.1x4 hoist machines at “Zhaman-Aibat” mine has shown the ability to perform the works directly on site and the high manufacturability of such works. Thus the high accuracy of assembly and processing is provided, the completion of frames and foundations of the hoists is not required, and the terms of reconstruction of the rope-guiding sheaves do not essentially influence on the terms of the hoists mounting on site.

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