Low pressure dth hammer
1. lower air consumption and low oil consumption.
2. mor reliable ,long life , and easier to maintain

  HR90 Low Air Pressure Top Quality DTH Hammer Drill

   Adavantage

   1.valveless air distribution ,more reliable;

   2.simple design of the piston,long life

   3.more efficient energy transfer,faster drilling speed ,lower

      air consumption and lower oil consumption;

   4.fewer internal parts,simple structure,longer life ,less failure and easier to

      maintain,because all the parts are heat treated.

   5.easy to disassemble bacause the top sub,the dive chuck and the

      external cylinder are connected by muty-step thread.