BORDO Bright Finish HSS Jobber Drill Metric

Bordo Metric Quick Silver M2-HSS Twist Drills.
DIN338
118° Split Point (crankshaft point).
Split point is self centering and reduces the need for end thrust. Friction at workpiece is reduced.
118° point angles are ideal for use in materials such as mild steel and cast iron.
The 118° point creates easily controlled chips which are wide and thin.
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.

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BORDO Cobalt HSS-Co5 Jobber Drill Fractional Set

Bordo Fractional Cobalt Tough HSS-Co5 Twist Drills.
ANSI B94-11
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.
Cobalt HSS Twist drills are extremely hard and provide superior performance and increased tool life especially in stainless steel and high tensile steel.
Bronze Finish (gold oxide) surface treatment. The metallic brown coloured low temperature temper treatment is normally only used on cobalt tools for identification purposes.

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Bordo Metric Red Band HSS-Co TiAlN Coated Twist Drills for Tough Treatable Steel.
DIN338
130Â° UX point with two helical parabolic flutes with 33 degrees of helix angle.
The mechanical properties of materials are influenced diversely by the addition of alloying elements and heat treatment processes, resulting in some high-strength, quenched and tempered steels or hardened steels.
This range has its own unique set of machining requirements which are satisfied by the Red Band – Tough Treatable Steel – Series.
TiAlN coating increases tool surface hardness to 87Rc.
For machining materials with Hardness < 470 HB : Tensile Strength <1500 N/mm2.

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Bordo Fractional Quick Silver M2-HSS Twist Drills.
ANSI B94-11
118° Split Point (crankshaft point).
Split point is self centering and reduces the need for end thrust. Friction at workpiece is reduced.
118° point angles are ideal for use in materials such as mild steel and cast iron.
The 118° point creates easily controlled chips which are wide and thin.
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.

(0 reviews)