Bordo 31/64" Long Series HSS Drill Bit Imperial (Clam Shell) - 2500-31/64S

Description

Bordo Long HSS Black Drill Bit Clam Shell (2500) - Imperial

ANSI B94-11.
118° chisel point with 30° helix.
Chisel point is suitable for general purpose drilling.
Black Finish Twist 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.

Specifications

AIMS SKU A0199841

Brand Bordo

Model Number 2500-31/64S

Barcode Number 9326518019299

Diameter (inch) 31/64

Flute Length (mm) 134

Overall Length (OAL) mm 205

Surface Finish Black

Diameter in (mm) 12.3

Spindle Speed Stainless Steel RPM 311

Spindle Speed Tool Steel RPM 466

Spindle Speed Cast Iron RPM 621

Spindle Speed Malleable Iron RPM 699

Spindle Speed Med. Carbon Steel RPM 777

Spindle Speed Aluminium/Brass RPM 1580

Spindle Speed Wood/Plastic RPM 2356

Flute Type 30° Helix

Type of Point 118° Std Chisel

Feed per Revolution (mm) 0.24

Spindle Speed Free Cutting Stl RPM 1113

Type Long Drill Bit
Material HSS

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