General Introduction:

These bits are designed for layer drilling, to enlarge pilot holes for long hole blasting of drop raises in underground mines, and constructing service holes.

PLATO reaming equipments come with three kinds: reamer bit match with pilot bit, or dome bit or hole opener bit separately.

How to order?

Reaming Bits: Diameter + Taper Degree or Thread

Pilot Drill Bits: Diameter + Body Taper Degree or Thread + Back Thread

Dome Bits: Diameter + Thread

Hole Opener Bits: Reamed Diameter + Pilot Diameter + Thread

Bit Face Selection

Face Design	Photo	Application
Flat Face		Flat face button drill bits are suitable for all rock conditions, especially for the rock with higher hardness and higher abrasiveness. Such as granite and basalt.
Drop Center		Drop center button drill bits are mainly suitable for the rock with low hardness, low abrasiveness, and good integrity. The bits can drill straighter holes.
Convex		Convex Face button bits are designed for fast penetration rates in softer rock.

Carbide Button Selection

Button Shapes	Photo	Application
		Rock Hardness	Penetration Velocity	Carbide Service Life	Vibration
Spherical		Hard	Slower	Longer service life Less prone to breaking	More
Ballistic		Medium Soft	Faster	Shorter service life More prone to breaking	Less
Conical		Soft	Faster	Shorter service life More prone to breaking	Less

Skirt Selection

Skirts	Photo	Application
Standard Skirt		Standard skirt button drill bits are suitable for all rock conditions.
Retrac Skirt		Retrac button drill bits are mainly used for unconsolidated rock mass with poor integrity. The skirt is designed to improve the straightness of the drilling hole and assist in the retrieval of drill rock tools.