Service Life of DTH Hammers & Factors for Water Well Drilling Rigs

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The water well drilling rig DTH hammer lasts 200-500 hours on average. These factors affect it:

 

  1. Rock hardness: Lives 40% shorter in granite than sandstone. Adjust impact parameters by rock type.
  2. Maintenance frequency: Hammers cleaned weekly last over twice as long as unmaintained ones.
  3. 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.