The proof of working long-term cooperation with a customer from the mining industry is the successful re-delivery of split spherical large-size bearing PLC 512-53.4CR. It is a special bearing used in surface mines, the specificity of which are cross-split rings and cage to facilitate its assembly and disassembly. It achieves respectable dimensions, the diameter of the outer ring measures 950 mm and the complete bearing weighs 639 kg. This bearing demonstrates again the precise work of our workers from the production plant ZKL Brno, which specializes in spherical and large-size bearings.