Technical data sheet

Drilling › Drills › Drills – short series › MTB25
MTB2500110
Solid carbide micro twist drill – short series
Dimensions
| d1h6 | d2h6 | l1+/-0.2 | l20/+0.5 |
|---|---|---|---|
| 1.1 | 1.1 | 28.0 | 7.0 |
Properties
| Coating | No |
| Coolant holes | No |
| Point angle | 118° |
| Helix angle | 25° |
| Flutes | 2 |
| Standard | TUSA |
Cutting parameters
| Material | Description | Machinability | Vcm/min | fnmm/rev |
|---|---|---|---|---|
| P.0 | Long chipping Low Carbon Steels | Recommended | 40-60 | 0.01-0.03 |
| P.1 | Short chipping Low Carbon Steels | Recommended | 40-60 | 0.01-0.03 |
| P.2 | Medium and High Carbon Steels | Recommended | 40-60 | 0.01-0.03 |
| P.3 | Alloy Steels, Tool Steels (N/mm² 600-850) | Recommended | 30-50 | 0.01-0.02 |
| P.4 | Alloy Steels, Tool Steels (N/mm² 850-1400) | Partially recommended | 20-40 | 0.01-0.02 |
| P.5 | Ferritic, Martensitic, PH SS | Partially recommended | 15-30 | 0.003-0.01 |
| P.6 | High Strength Ferritic, Martensitic, PH SS | Partially recommended | 15-30 | 0.003-0.01 |
| M.1 | Austenitic Stainless Steel | Partially recommended | 15-30 | 0.003-0.01 |
| M.2 | High Strength Austenitic SS, Cast SS | Partially recommended | 15-30 | 0.003-0.01 |
| M.3 | Duplex SS | Partially recommended | 15-30 | 0.003-0.01 |
| K.1 | Grey Cast Iron | Partially recommended | 30-50 | 0.02-0.03 |
| K.2 | Low and Medium Strength CGI, Ductile Irons | Partially recommended | 30-50 | 0.02-0.03 |
| K.3 | High Strength Ductile and Austempered Ductile Iron | Partially recommended | 30-50 | 0.02-0.03 |
| N.1 | Wrought Aluminium | Recommended | 60-100 | 0.03-0.06 |
| N.2 | Low Si Al Alloys and Magnesium Alloys Si<12% | Recommended | 60-100 | 0.03-0.06 |
| N.3 | High Si Al Alloys Si>12% | Recommended | 50-80 | 0.01-0.04 |
| N.4 | Copper, Brass, Zinc Based Alloys | Recommended | 30-70 | 0.03-0.06 |
| O.1 | Thermoplastic and thermosetting materials | Recommended | 60-100 | 0.03-0.06 |