ND/QL VALVELESS SERIES DTH HAMMER
ND140A
  • Avoid the problem happens on foot valve. Fracture,expansion and contraction.
  • Lower air comsumption and higher impact frequency. 15-30% higher drilling efficiency than the bit with foot valve.
  • Simpler structure and less spare parts, makes easier & cheaper maintenance.
  • Heat-hardened spare parts,makes longer serving life and less problem.
  • Thread connection for top sub and drive chuck,makes easier disassembly
ND140A
ND140A

PARÁMETROS TÉCNICOS

1861mm
851Kg
￠332mm
API 6 5/8 REG
￠350-￠550mm