Ejector Drilling
- Also called a dual tube system, as ejector drills consist of a drill head, an outer tube, and an inner tube.
- High pressure coolant is introduced through the space between the inner tube and outer tube.
- Chips are discharged through the inside diameter of the inner tube and exhausted through an adapter mounted to the front of the machining spindle.
- Typically used to retrofit existing lathes or machining centers for deep hole drilling.
- Chip evacuation is not as efficient as a BTA system due to a smaller area for chips and fluid discharge.
- Maximum depth to diamter ratio is limited compared to BTA drilling systems.
Machines with Ejector Drilling Capabilities:
