The water well drilling rig DTH hammer lasts 200-500 hours on average. These factors affect it:
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Rock hardness:
Lives 40%
shorter in granite than sandstone.
Adjust impact parameters by rock type.
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Maintenance frequency: Hammers cleaned weekly last over twice as long as unmaintained ones.
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Operation standards: Avoid dry firing (impacting without bit touching rock). 10 minutes of this equals 1 hour of normal wear.
A drilling team’s frequent dry firing ruined hammer pistons early. It raised replacement costs by 2,000 yuan per water well drilling rig.
Giàn khoan Bangxin