What is an Ejector Drill?
An ejector drill uses a specially designed carbide cutter at the point. The drill body is essentially a tube within a tube.
Used almost exclusively for deep hole drilling of medium to large diameter holes (about 3/4" up to about 4" diameter). An ejector drill uses a specially designed carbide cutter at the point. The drill body is essentially a tube within a tube. Flushing water travels down between the two tubes. Chip removal is back through the center of the drill.
Drill bits are cutting tools used to create cylindrical holes. Bits are held in a tool called a drill, which rotates them and provides torque and axial force to create the hole. Specialized bits are also available for non-cylindrical-shaped holes.
The term drill can refer to a drilling machine, or can refer to a drill bit for use in a drilling machine.
Ejector drills can be used on a variety of machining and turning centers equipped with sufficient high pressure coolant and filtration systems. These tools and this system allow depth to diameter ratios in excess of 100x's dia. BTA Heller offers several different carbide grades, coating and grind options.
BTA Heller sells ejector drills in diameter ranges from 0.055" to 2.0".