ND/QL VALVELESS SERIES DTH HAMMER
ND35A
  • 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
ND35A
ND35A

PARÁMETROS TÉCNICOS

886mm
24.2Kg
￠82mm
API2 3/8"REG
￠90-￠115mm