GEKO G37100 10 mm HSS Cobalt Drill Bit for Metal
Key information
Availability:Temporarily out of stock — ask for availability
Shipping cost:From 3.29 Euro
catalog number:G37100
Availability:
EAN code:5901477154409
Product condition:New, originally packaged
Guarantee:24 months of consumer protection
Weight:0,05 kg
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GEKO G37100 10 mm HSS-CO M35 Cobalt Drill Bit for Metal
Drill bit made from HSS-CO M35 high-speed steel with 5% cobalt, designed for drilling in metals. Complies with DIN 338 and features a two-stage point ground at 125°.
Technical Features
HSS-CO M35 Cobalt Alloy
The 5% cobalt content increases the hardness and heat resistance of the high-speed steel. The M35 designation denotes a specific alloy composition that retains its cutting properties at temperatures up to 600°C, allowing drilling into harder grades of steel without losing its edge.
Two-Stage 125° Point
Grinding the point at 125° in two stages creates an additional centring edge. As a result, the drill bit requires no prior centre punching – it centres itself at the drilling point, which shortens working time and improves precision.
Ground Flutes
Precision grinding of the helical flutes provides better chip evacuation from the hole and reduces friction during drilling. This translates into a lower working temperature and longer tool life.
DIN 338 Compliance
The DIN 338 standard defines the drill bit's dimensions, tolerances and angles. The cylindrical shank fits standard drill chucks, and the standardised geometry ensures repeatable hole dimensions.
Technical Specification
| Model | GEKO G37100 |
| Drill bit diameter | 10.0 mm |
| Material | HSS-CO M35 (cobalt high-speed steel) |
| Cobalt content | 5% |
| Shank type | Cylindrical |
| Point angle | 125° (two-stage, ground) |
| Standard | DIN 338 |
| Flutes | Ground |
Applications
- Drilling in structural and tool steels
- Machining stainless and acid-resistant steel
- Drilling in grey and ductile cast iron
- Work in aluminium and copper alloys
- Drilling in difficult-to-machine materials
- Workshop and industrial applications requiring tool durability
- Drilling in steel sections and sheet metal
Difference Between HSS and HSS-CO
Standard HSS high-speed steel performs well in soft metals and wood. The addition of cobalt (HSS-CO) increases hardness and temperature resistance, allowing drilling into harder steels at higher speeds. Cobalt drill bits stay sharp for longer, especially during intensive use.
Use and Maintenance
Before drilling, check that the drill bit is correctly secured in the chuck – any play can cause runout and damage the cutting edges. During work, the use of coolant or cutting oil is recommended, particularly when drilling stainless steel – this lowers the temperature and extends tool life.
The rotational speed depends on the hardness of the material: for structural steel around 300-400 rpm at a diameter of 10 mm, for stainless steel 200-300 rpm. Excessively high speeds cause overheating and loss of edge hardness.
After use, clean the drill bit of chips and protect it from moisture – leaving chips behind can lead to corrosion of the flutes. Storing it in a dry place or in a dedicated case prevents mechanical damage.
Commercial information
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Client: Ju...ka,date of purchase 04-01-2022 20:45
