Alpha Gold Series 8.0mm Jobber Drill Bit
When you go to buy a drill bit, what are you needing? Just a drill? or do you actually want HOLES?
Rigorous independent testing has proven that the Gold Series Drills outperform other Australian drills on the market by more than 30% - giving you more holes for your dollar in every single drill bit !
Features
M2 HSS Fully ground M2 HSS material increases drill life
Titanium Nitride coating reduces heat and increases lubricity for extended life
135 Degree Split Point cuts faster and reduces wandering
Technical Data
Overall Length 117mm
Flute Length 75mm
Stainless Steel RPM 489
Tool Steel RPM 733
Cast Iron RPM 978
Malleable Iron RPM 1100
Med Carbon Steel RPM 1222
Free Cutting Steel RPM 1711
Alum, Brass, Plastic RPM 2445
Wood RPM 3667
Feed per RPM (mm/rev) .15-.25
Drilling Practise
The flute form, web thickness and split point of the standard Alpha drills are suitable for most materials forming fine chips. For effective drilling, the rigidity of the drill and work piece are most important. The shorter the flute length the more rigid the drill. Long drills must be adequately supported to reduce vibration.
The following are important in drill use :
Clamp the work piece securely
Select the correct speed and feed
Use an appropriate coolant or lubricant
Ensure the shank is securely held. Avoid using worn drill chucks as the drill may slip during use.
Regrind the point or replace the drill before it dulls, do not force a worn drill.
When deep hole drilling, withdraw frequently to clear the chips ( deep holes start at 4X the diameter)
For stainless steel, manganese and high tensile steels, do not allow the drill to swell as it will cause work-hardening. Use a slower speed and heavier feed for these materials.
When you go to buy a drill bit, what are you needing? Just a drill? or do you actually want HOLES?
Rigorous independent testing has proven that the Gold Series Drills outperform other Australian drills on the market by more than 30% - giving you more holes for your dollar in every single drill bit !
Features
M2 HSS Fully ground M2 HSS material increases drill life
Titanium Nitride coating reduces heat and increases lubricity for extended life
135 Degree Split Point cuts faster and reduces wandering
Technical Data
Overall Length 117mm
Flute Length 75mm
Stainless Steel RPM 489
Tool Steel RPM 733
Cast Iron RPM 978
Malleable Iron RPM 1100
Med Carbon Steel RPM 1222
Free Cutting Steel RPM 1711
Alum, Brass, Plastic RPM 2445
Wood RPM 3667
Feed per RPM (mm/rev) .15-.25
Drilling Practise
The flute form, web thickness and split point of the standard Alpha drills are suitable for most materials forming fine chips. For effective drilling, the rigidity of the drill and work piece are most important. The shorter the flute length the more rigid the drill. Long drills must be adequately supported to reduce vibration.
The following are important in drill use :
Clamp the work piece securely
Select the correct speed and feed
Use an appropriate coolant or lubricant
Ensure the shank is securely held. Avoid using worn drill chucks as the drill may slip during use.
Regrind the point or replace the drill before it dulls, do not force a worn drill.
When deep hole drilling, withdraw frequently to clear the chips ( deep holes start at 4X the diameter)
For stainless steel, manganese and high tensile steels, do not allow the drill to swell as it will cause work-hardening. Use a slower speed and heavier feed for these materials.
| Cutting Diameter: | 8mm |
| Weight (Kgs): | 0.032 |
| Minimum Sale Qty: | 5 |
Custom Field
Inner Qty 5
Sales Unit EA
Wire Item false
Cross Reference 9LM080
Estimated Lead Time 3-5 days
Brand Alpha
On Sale Item false
Price Always false
ns_id 914
item_type _inventoryItem
Shipping Class NON DG
Cutting Diameter 8mm
Weight (Kgs) 0.032
Minimum Sale Qty 5
