New, not used, borehole diameter nominal 130 mm, type of connection with the crown - bayonet, impact power 4,0 kW, nominal pressure 0,5MPa, air flow 10,8m3/min, diameter 116mm, length 657mm, connecting thread 72x10, weight 35,5kg, key 85 - 1 pc, key 100 - 1 pc. Working time of the pneumatic hammer is 250...350 metres when drilling in rocks and ores with hardness coefficient f = 14...16 on the scale of Prof. Protodyakonov
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