
PROJAHN Extra long multi-range twist drills with cylindrical shank HSS-Co DIN 1869 type UF-L – Ø mm 14, L 310, L2 220 (431401)
Code: 431401 · Brand: Projahn · Accessories & bits · On order · Price on request
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Twist drills for particularly deep holes
Thanks to the ultra-flat flute profile (wide flute angles, larger side rake angles), even extra-long drill bits achieve the required stability (the core is reinforced, but without taper) and can convey chips well at the same time
For large drilling depths (approx. 10 to 15 x Ø – depending on the material), it is advisable to withdraw the drill bit at regular intervals to clear chips
Suitable for titanium and titanium alloys
Specifications
| Article No. | 431401 |
|---|---|
| EAN | 4000146431412 |
| Ø mm | 14 |
| L | 310 |
| L2 | 220 |
| Quality level | Professional |
| Standard(s) | DIN 1869 |
| Tolerance | h8 |
| Material | HSS-Co 5 % |
| Point grind | Factory standard |
| Point angle | 130° |
| Point thinning | DIN 1412, form UX |
| Core thickness | stronger than normal |
| Core taper | Without |
| Side rake angle (helix angle) | 40° |
| Flute shape | Flat flute profile |
| Other design features according to | DIN 1414 |
| Tool holder | Cylindrical |
| Application | Bronze, brass, stainless steel |
| Packaging | Single |











































































































































