OKADA TOP Series, Инструкция и перечень запасных частей для владельцев и операторов

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Generally, the size of the fatigue area indicates the level of stress applied to the tool, i.e. the smaller the
fatigue are, the higher the stress level, although it must be borne in mind that once initiation of a fatigue
crack has taken place, it requires a lower stress level to cause it to grow.
Typical Failures (guide to warranty claims)
OKADA AIYON working tools are manufactured from first class materials and then heat treated to produce a
fatigue and wear resistant tool. Thus when a tool has apparently failed to give a satisfactory service life, a
brief visual inspection can often give a quick indication of the cause.
Fig. 5. Typical fractures caused by excessive bending of the working tool. Warranty claims rejected.
Fig. 5
Fig. 6. Typical of high stress fracture, usually caused by using the machine to ‘pull’. Warranty claims
rejected.
Fig. 6
Fig. 7. Typical fracture caused by levering tool while buried in the burden. Warranty claims rejected.
Fig. 7
Wear
Wear is influenced by ground conditions, but as a general guide the following applies:
Fig. 8. Blunt tools worn more than 1/3 diameter or moil points and chisels worn back more than 51 mm (2”)
of working end classed as reasonable life. Warranty claims rejected.
Fig. 8