Description

Bordo HSS Bright Finish Extra Long Jobber Drill Bit

HSS Bright Finish Extra Long Twist Drill.
HSS Extra Long Twist Drill.
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.
Bright Finish Twist 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.

About 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 135° 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.

Specifications

AIMS SKU A0199147

Brand Bordo

Model Number 2504-18.00

Barcode Number 9326518173618

Diameter (mm) 18

Flute Length (inch) 250

Overall Length (OAL) mm 315

Spindle Speed Stainless Steel RPM 212

Spindle Speed Tool Steel RPM 319

Spindle Speed Cast Iron RPM 425

Spindle Speed Malleable Iron RPM 478

Spindle Speed Med. Carbon Steel RPM 531

Spindle Speed Aluminium/Brass RPM 1079

Spindle Speed Wood/Plastic RPM 1610

Flute Type 30° Helix

Type of Point 135° Split Point

Feed per Revolution (mm) 0.34

Spindle Speed Free Cutting Stl RPM 761

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