On precision work or where high heat is likely to be generated, the additional 120° angular chamfer of the bell type centre drill protects the edges of the center hole and reduces the danger of inaccuracies from marred center holes.
| Code |
Size |
ø Body |
ø Pilot |
| 060-070-00100 |
BS1 |
1/8" |
3/64" |
| 060-070-00200 |
BS2 |
3/16" |
1/16" |
| 060-070-00300 |
BS3 |
1/4" |
3/32" |
| 060-070-00400 |
BS4 |
5/16" |
7/64" |
| 060-070-00500 |
- |
4mm |
1mm |
| 060-070-00600 |
- |
5mm |
1.25mm |
| 060-070-00700 |
- |
8mm |
2mm |
| 060-070-00800 |
- |
10mm |
2.5mm |