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All Products ➞ Bordo ➞ Drills ➞ Jobber ➞ Cobalt HSS-Co5 ➞ Fractional Bulk
31/64" HSS Cobalt Jobber Drill
| Part Number: | 2010-31/64 |
| Brand: | Bordo |
| Sub Brand: | Cobalt Tough |
| Barcode: | 9326518036975 |
| Pack Qty: | 5 |
| Feed per revolution mm: | 0.31 |
| Spindle Speed Aluminium/Brass RPM: | 1895 |
| Spindle Speed Cast Iron RPM: | 746 |
| Spindle Speed Free Cutting Steel RPM: | 1336 |
| Spindle Speed Malleable Iron RPM: | 839 |
| Spindle Speed Med. Carbon Steel RPM: | 932 |
| Spindle Speed Stainless Steel RPM: | 373 |
| Spindle Speed Tool Steel RPM: | 559 |
| Spindle Speed Wood/Plastic RPM: | 2828 |
| Diameter (inch): | 31/64 |
| Diameter (mm): | 12.3 |
| Flute Length (mm): | 111 |
| Overall Length (mm): | 149 |
About this item:
- 31/64" HSS Cobalt Twist
- 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.