Additional information
| Size | 1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2" |
|---|
BORDO Long Reach (Aircraft) HSS Fractional
- Long Reach (Aircraft) Drill
- Long Reach Drills are suitable for all general purpose drilling where extra reach is required.
- Long Reach Drills are not designed to drill deep holes.
- Maximum hole depth must be less than the flute length (FL) of the drill.
- Deep hole drilling requires the use of a Bordo Long Series Drill, Bordo Extra Deep Hole Drill or Bordo Auger Bit depending on the material being drilled.
- 135° Split Point (crankshaft point)
- Split point is self centering reducing the need for end thrust.
- The 135° point provides superior performance when drilling harder steel materials.
- In most situations it will produce thicker chips minimising work hardening of the cavity.
- Faster penetration reduces abrasion and friction along the cutting edges.
- Black Finish Drills (also called blue finish) achieve their distinctive colour by steam tempering, a thermal process resulting in a porous tool coating.
- This surface helps to keep lubricant on the tool, particularly important on the cutting edges, thus reducing friction and cold welding.
- The result is increased tool life.
- Black finish tools are generally recommended for ferrous applications where the oxide layer aids chip flow and heat dissipation.
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