Halco DTH Bits

There are three different bit heads on offer, Convex, Flat Face and Concave, also with three different inserts that can tackle any challenge and rock face formation. The two most important factors in choosing the right drill bit are productivity and reliability. For soft to medium rock formations where penetration rates are high the ballistic and semi-ballistic inserts coupled with flat face or concave bit heads are more suitable. If the rock formation is on the hard to very hard side, it is more advisable to use a domed insert with convex head this will result in a longer drill bit life.
There are three different bit heads on offer, Convex, Flat Face and Concave, also with three different inserts that can tackle any challenge and rock face formation. The two most important factors in choosing the right drill bit are productivity and reliability. For soft to medium rock formations where penetration rates are high the ballistic and semi-ballistic inserts coupled with flat face or concave bit heads are more suitable. If the rock formation is on the hard to very hard side, it is more advisable to use a domed insert with convex head this will result in a longer drill bit life.

HALCO DTH BIT FACE DESIGNS

	Flat Face Alternative design for all rock conditions especially fractured and fissured rocks and changing formations.
	Concave Alternative design for all rock conditions particularly deep hole drilling can improve hole alignment as a result of inverted pilot.
	Convex Strong design for all conditions especially hard abrasive rock.Good balance of fast drilling and long service life.

	Ballistic Inserts Suitable for soft and medium compact low abrasive rocks producing large cuttings. Not suitable for badly fractured rocks.
	Domed Inserts Strong rugged shape for high performance and good service life in all conditions particularly suitable for very hard abrasive rocks and deep hole drilling.
	Semi-Ballistic Inserts Suitable for all soft and medium rock conditions including fractured and fissured rocks.