Hard Rock Drilling: Key Failure Prevention Tips

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Failure prevention for hard rock drill bits is essential.
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In granite drilling, diamond bits often slip from low pressure or hard matrix. Increase pressure by 5-10% or switch to soft-matrix bits.​
Uneven wear? Check rig verticality. Calibrate immediately if over 1° deviation.​
Tips for hard rock bit failure handling:​
  1. Prevent roller bit jamming in basalt. Boost mud cleaning and replace grease regularly.​
  1. Stop drilling on tooth chipping. Use low pressure slow reaming to avoid stuck fragments.​
  1. Prepare spare bits and fishing tools. Cut breakdown time to under 2 hours with plans.​
Proper failure prevention reduces downtime losses in hard rock operations.