The paper describes the improvement of technological process of knife holder production used in disc mowers at SaMASZ Sp. With o.o. The improvement was aimed at eliminating cracks in the press of a 500t crank press press crush that occurred after the Boron 27 starting material was changed to Domex MC 500 high strength steel. The technology of regeneration of claws with identified operational cracks and a stand for fatigue tests was also proposed. Defectoscopy and strength testing methods have been developed to verify that the structure of the regenerated material is free from cracks or micro cracks in the material.

Key words: knife holder, Boron 27, Domex, fatigue tests, defectoscopic examination