- MINE AIR, USUALLY SUPPLIED AT 90 - 100 PSI (6.2 - 6.9 bar),  MUST BE BOOSTED AS TO DELIVER
   1400 CFM (40 M3M) OF AIR AT 350 PSI (23.5 bar) TO THE 6 INCH V-30 HAMMERS.

What are the electrical requirements of the drill and booster when operating the V-30?


- DEPENDING ON THE ITH DRILL CHOSEN, ELECTRICAL REQUIREMENTS ARE IN THE RANGE OF 
   200 AMPS AT 550V, 60 CYCLE.

Is water required using this drilling method?

 - WATER IS MAINLY USED TO ABATE THE DUST GENERATED FROM DRILLING AND TO COOL THE BOOSTER COMPRESSORS. THE VOLUME OF WATER REQUIRED IS APPROXIMATELY 3 TO 5 GPM (13 - 22 LPM). 

What diameter hole does the V-30 drill? ?

    - THE V-30 DRILLS A 762MM (30 INCH) HOLE.

What is the V-30 drilling sequence?

- A 16.5 CM (6.5 INCH) PILOT HOLE IS DRILLED AND REAMED TO 25 CM (10 INCH), THEN THE V-30 IS ATTACHED TO DRILL TO 762MM (30 INCH).

What is the maximum angle of drilling? 

- THE V-30 CAN DRILL FROM 45 A 90 DEGREES.

What is the maximum length of drilling?

- BLIND BORING 35 M (115 FT)
- DOWN REAMING 45M (150 FT)
- CONVENTIONAL DRILLING 120M (400 FT)

What is the average V-30 penetration rate?

- AVERAGE OF 1 TO 2.5M (3 TO 8 FT) PER HOUR, DEPENDING ON ROCK HARDNESS.