118 ° Split Point(crankshaft point)Split point is self centering and reduces the need for end thrust. Friction at workpiece is reduced. 118 º point angles are ideal for use in materials such as mild steel and cast iron. The 118 º point creates easily controlled chips which are wide and thin.DRILL BIT SURFACE TREATMENTBright Finish Jobber Drills have no surface treatment and are supplied in the as-ground condition. These tools are suitable for general purpose use, particularly for non-ferrous applications.Specifications:
- Spindle Speed Stainless Steel RPM: 1206
- Spindle Speed Tool Steel RPM: 1809
- Spindle Speed Cast Iron RPM: 2411
- Spindle Speed Malleable Iron RPM: 2713
- Spindle Speed Med. Carbon Steel RPM: 3014
- Spindle Speed Free Cutting Steel RPM: 4320
- Spindle Speed Aluminium/Brass RPM: 6129
- Spindle Speed Wood/Plastic RPM: 9143
- Feed per revolution mm: 0.07
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