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All Products ➞ Bordo ➞ Drills ➞ Jobber ➞ Cobalt HSS-Co5 ➞ Metric Carded
4mm HSS Cobalt Jobber Drill - Clam
| Part Number: | 2011-4.00S |
| Brand: | Bordo |
| Sub Brand: | Cobalt Tough |
| Barcode: | 9326518035978 |
| Pack Qty: | 1 |
| Feed per revolution mm: | 0.12 |
| Spindle Speed Aluminium/Brass RPM: | 5829 |
| Spindle Speed Cast Iron RPM: | 2293 |
| Spindle Speed Free Cutting Steel RPM: | 4109 |
| Spindle Speed Malleable Iron RPM: | 2580 |
| Spindle Speed Med. Carbon Steel RPM: | 2867 |
| Spindle Speed Stainless Steel RPM: | 1147 |
| Spindle Speed Tool Steel RPM: | 1720 |
| Spindle Speed Wood/Plastic RPM: | 8695 |
| Diameter (mm): | 4 |
| Flute Length (mm): | 43 |
| Overall Length (mm): | 75 |
About this item:
- 4mm HSS Cobalt Twist Drill - Clam
- Bordo Metric Cobalt Tough HSS-Co5 Twist Drills.
- DIN338
- 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.