Rockbreaker, large, suit excavator from 75-110 ton, has variable blow adjustment from 290-390 beats per minute. Weight is 7.5 ton, hitch size has 160 bosses, bushed to 120, ears 515-550 with 740 centres. Hammer in good working order
Rockbreaker NPK-E224, suit 40 ton excavator, boss 120, pins 100 at 610 centres with 520 between ears, hammer weighs 3.2 ton.
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