Technical data sheet
Drilling › Centre drills › MTB41
MTB4100600
90° solid carbide centre drill for precision pre-drilling
Dimensions
| d1h6 | d2h6 | l10/+1 | l20/+1 |
|---|---|---|---|
| 6.0 | 6.0 | 50.0 | 21.0 |
Properties
| Coating | No |
| Coolant holes | No |
| Point angle | 90° |
| Helix angle | 25° |
| Flutes | 2 |
| Standard | TUSA |
Cutting parameters
| Material | Description | Machinability | Vcm/min | fnmm/rev |
|---|---|---|---|---|
| P.0 | Long chipping Low Carbon Steels | Recommended | 25-40 | 0.25-0.3 |
| P.1 | Short chipping Low Carbon Steels | Recommended | 25-40 | 0.25-0.3 |
| P.2 | Medium and High Carbon Steels | Recommended | 25-40 | 0.25-0.3 |
| P.3 | Alloy Steels, Tool Steels (N/mm² 600-850) | Recommended | 20-35 | 0.2-0.25 |
| P.5 | Ferritic, Martensitic, PH SS | Partially recommended | 10-20 | 0.15-0.2 |
| P.6 | High Strength Ferritic, Martensitic, PH SS | Partially recommended | 10-20 | 0.15-0.2 |
| M.1 | Austenitic Stainless Steel | Partially recommended | 8-16 | 0.08-0.14 |
| M.2 | High Strength Austenitic SS, Cast SS | Partially recommended | 8-16 | 0.08-0.14 |
| M.3 | Duplex SS | Partially recommended | 8-16 | 0.08-0.14 |
| K.1 | Grey Cast Iron | Partially recommended | 25-40 | 0.15-0.2 |
| K.2 | Low and Medium Strength CGI, Ductile Irons | Partially recommended | 20-35 | 0.1-0.15 |
| K.3 | High Strength Ductile and Austempered Ductile Iron | Partially recommended | 20-35 | 0.1-0.15 |
| N.1 | Wrought Aluminium | Recommended | 45-60 | 0.25-0.35 |
| N.2 | Low Si Al Alloys and Magnesium Alloys Si<12% | Recommended | 30-45 | 0.3-0.4 |
| N.3 | High Si Al Alloys Si>12% | Recommended | 25-40 | 0.25-0.35 |
| N.4 | Copper, Brass, Zinc Based Alloys | Recommended | 25-60 | 0.1-0.35 |
| S.4 | Ti and Ti Alloys | Partially recommended | 30-45 | 0.15-0.2 |
| O.1 | Thermoplastic and thermosetting materials | Recommended | 30-45 | 0.25-0.4 |