DTH Drilling Rig Hydraulic Switch Wiring Diagram

What is DTH drilling?

nd as drilling progresses. DTH drilling is primarily percussive drilling using the energy imparted by the hammer piston t the rock through the bit. Any attempts to apply too much weight could damage the bit, hammer and drill string and

What is a DTH drill bit?

ld be carefully monitored.DTH drill bits are rotary - PERCUSSIVE tools with he emphasis on PERCUSSIVE. Their function is to fracture the material being drilled which should then be immediately carri

How do you use a DTH hammer?

Rotate the hammer clockwise at approximately 30-rpm. The DTH bit will now push into the Driver Sub and percussive action begins. When the hammer is lifted from the rock face, the DTH bit extends from the Driver Sub and percussive action ceases. Extra air will pass through the hammer, which can be used to flush the hole clean.

Can I use DTH bits on a ROK T Hammer?

We recommend using DTH bits in good condition. Avoid using DTH bits that are overrun, as this will alter your drilling penetration rates and can cause premature wear on various components of the hammer. (When using a ROK T hammer it is important to REMOVE the blow tube/foot valve.

How much oil does a DTH hammer need?

airline.DTH hammers need• 1/3rd of imp. pint of oil per hour p BITHead DesignsFlat FaceAlternative design for all rock conditions especially fractured and fissured roc

What causes a DTH hammer to fail?

When installing a bit in the hammer, take care to remove any cuttings or foreign material from the bit shank. Corrosion is another common cause of DTH hammer and bit failures. Corrosion is the deterioration of a material due to a reaction with its environment.