Bordo 10.5mm HSS Cobalt Jobber Drill - Carded

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.

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

Part No. 2011-10.50S
Reference No. D1080105
Barcode 9326518036104
Diameter (mm) 10.5
Flute Length (mm) 87
Overall Length (mm) 133
Pack Quantity 1
Spindle Speed Stainless Steel RPM 437
Spindle Speed Tool Steel RPM 655
Spindle Speed Cast Iron RPM 874
Spindle Speed Malleable Iron RPM 983
Spindle Speed Med. Carbon Steel RPM 1092
Spindle Speed Free Cutting Steel RPM 1565
Spindle Speed Aluminium/Brass RPM 2220
Spindle Speed Wood/Plastic RPM 3312
Feed per revolution mm 0.27