Bordo 8.0mm HSS Cobalt Jobber Drill - Carded
$22.20

135° Split Point (crankshaft point)
Split point is self centering and the short distance from the drill axis to the outer corners results in faster penetration, reducing the need for end thrust. The 135º point should be used to cut harder steel materials especially in deep hole applications. In these situations it will produce thicker chips minimising work hardening of the cavity. Faster penetration reduces abrasion and friction along the cutting edges. Cobalt HSS jobber drills are extremely hard and provide superior performance and increased tool life especially in stainless steel and high tensile steel.

DRILL BIT SURFACE TREATMENT
Bronze Finish (gold oxide). The metallic brown coloured low temperature temper treatment is normally only used on cobalt tools for identification purposes.

Part No. 2011-8.00S
Reference No. D1080080
Barcode 9326518036050
Diameter (mm) 8
Flute Length (mm) 75
Overall Length (mm) 117
Pack Quantity 1
Spindle Speed Stainless Steel RPM 573
Spindle Speed Tool Steel RPM 860
Spindle Speed Cast Iron RPM 1147
Spindle Speed Malleable Iron RPM 1290
Spindle Speed Med. Carbon Steel RPM 1433
Spindle Speed Free Cutting Steel RPM 2054
Spindle Speed Aluminium/Brass RPM 2914
Spindle Speed Wood/Plastic RPM 4348
Feed per revolution mm 0.21