Reduced Shank Drill 25mm 1/2"

Stock Code:
2654-25.00
Price:
$146.07

Diameter (mm)25
Flute Length (mm)89
Overall Length (mm)152
Pack Quantity1
Spindle Speed Stainless Steel RPM153
Spindle Speed Tool Steel RPM229
Spindle Speed Cast Iron RPM306
Spindle Speed Malleable Iron RPM344
Spindle Speed Med. Carbon Steel RPM382
Spindle Speed Free Cutting Steel RPM548
Spindle Speed Aluminium/Brass RPM777
Spindle Speed Wood/Plastic RPM1159
Feed per revolution mm0.46

BORDO REDUCED SHANK HSS DRILLS

118° notched point 30° helix

DRILL BIT SURFACE TREATMENT
Bordo reduced shank HSS drills are ground and then a black finish is achieved by steam tempering, a thermal process resulting in a porous tool coating. This surface aids chip flow and heat dissipation. The drill is then ground a second time to achieve a bright finish on the shank and cutting edges.