TiN-coated 90° NC spotting drill manufactured from HSS-Co8 M42 high-speed steel containing approximately 8% cobalt for accurate positioning and chamfering. Available in 6, 10 and 12 mm cutting diameters with diameter-matched round shanks for compatible stationary machines.
Key Features
- HSS-Co8 M42 high-speed steel containing approximately 8% cobalt provides high hardness, heat resistance and wear resistance
- 90° cutting geometry supports accurate spotting, centring and hole-edge chamfering
- TiN-coated cutting section helps reduce adhesion and improve resistance to wear, heat and oxidation
- Precision-ground cutting edges promote stable positioning and accurate hole preparation
- Round straight shank provides secure clamping in a compatible drill chuck or machine toolholder
Product Specifications
| Product Type |
NC Spotting Drill |
| Material |
HSS-Co8 M42 Cobalt High-Speed Steel |
| Cobalt Content |
Approximately 8% |
| Surface Coating |
TiN |
| Coating Colour |
Gold |
| Point Angle |
90° |
| Manufacturing Process |
Precision Ground |
| Shank Type |
Round Straight Shank |
| Shank Diameter |
Equal to Cutting Diameter |
| Available Diameters |
6 mm, 10 mm and 12 mm |
| Unit of Sale |
1 pc per selected variant |
Available Variants
| Cutting Diameter |
Cutting Length |
Overall Length |
Shank Diameter |
| 6 mm |
20 mm |
66 mm |
6 mm |
| 10 mm |
25 mm |
89 mm |
10 mm |
| 12 mm |
30 mm |
102 mm |
12 mm |
Applications
- Accurate spotting before twist drilling
- Producing 90° starting points and hole-edge chamfers
- Stainless steel and compatible steel workpieces
- Cast iron
- Copper and compatible non-ferrous metals
Tool Compatibility
- Compatible with suitable lathes, pillar drills, CNC machines and machining centres
- The machine chuck or toolholder must accept a round shank matching the selected drill diameter
- The 6 mm variant requires at least 6 mm chuck capacity
- The 10 mm variant requires at least 10 mm chuck capacity
- The 12 mm variant requires at least 12 mm chuck capacity
- Not recommended for ordinary handheld electric drills due to the precision and rigidity required for spotting operations
Recommended Cutting Data
| Cutting Diameter |
Cutting Speed |
Feed per Revolution |
| 6 mm |
23–25 m/min |
0.10–0.15 mm/rev |
| 10 mm |
23–25 m/min |
0.15–0.20 mm/rev |
| 12 mm |
23–25 m/min |
0.15–0.20 mm/rev |
Operating Guidance
- Select spindle speed according to cutting diameter, workpiece material and machine rigidity
- Use a rigid machine setup to maintain spotting accuracy and concentricity
- Use suitable cutting fluid or coolant when machining stainless steel and other demanding metals