The CBN ground step drill bitsguarantee quiet running and high cuttting performance
Double flutes eliminate chatter and vibration when cutting through workpiece
| Size | Overall length | Steps | Shank Dia |
|---|---|---|---|
| 1/8"-1/2" | 3-1/8" | 13 | 1/4" |
| 1/4"-3/4" | 2-3/4" | 9 | 3/8" |
| 3/16"-1/2" | 3-1/8" | 6 | 1/4" |
| 3/16"-7/8 | 3-1/4" | 12 | 3/8" |
| 9/16"-1" | 3-1/4" | 8 | 3/8" |
| 7/8"-1 3/8" | 3-1/4" | 5 | 3/8" |
The CBN ground step drill bitsguarantee quiet running and high cuttting performance
Double flutes eliminate chatter and vibration when cutting through workpiece
| Size | Overall length | Steps | Shank Dia |
|---|---|---|---|
| 1/8"-1/2" | 3-1/8" | 13 | 1/4" |
| 1/4"-3/4" | 2-3/4" | 9 | 3/8" |
| 3/16"-1/2" | 3-1/8" | 6 | 1/4" |
| 3/16"-7/8 | 3-1/4" | 12 | 3/8" |
| 9/16"-1" | 3-1/4" | 8 | 3/8" |
| 7/8"-1 3/8" | 3-1/4" | 5 | 3/8" |
Double R groove Hex shank, one for JIS standard, one for ANSI standard
The CBN ground step drill bitsguarantee quiet running and high cuttting performance
Double flutes eliminate chatter and vibration when cutting through workpiece
| Size | Overall length | Steps | Shank Dia |
|---|---|---|---|
| 3mm-12mm | 81mm | 9 | 1/4 Hex |
| 4mm-12mm | 81mm | 9 | 1/4 Hex |
| 6mm-18mm | 71mm | 10 | 1/4 Hex |
| 4mm-20mm | 82mm | 9 | 1/4 Hex |
| 4mm-22mm | 86mm | 10 | 1/4 Hex |
| 6mm-24mm | 86mm | 13 | 1/4 Hex |
| 3mm-13mm | 70mm | 11 | 1/4 Hex |
| 6mm-25mm | 82mm | 7 | 1/4 Hex |
| 6mm-35mm | 102mm | 13 | 1/4 Hex |
The deep ground flutes of step drill bits with 3 cutting edges guarentee absolutely chatter-free working. The reduced load of the cutting edges allows a higher feed rate especially for soft materials like non-ferrous metals.
The CBN ground step drill bitsguarantee quiet running and high cuttting performance
The chamfer on the base of the cone makes withdrawal of the tool from the material simple when through hole drilling
| Size | Overall length | Steps | Shank Dia |
|---|---|---|---|
| 1/8"-1/2" | 3-1/8" | 13 | 1/4" |
| 1/4"-3/4" | 2-3/4" | 9 | 3/8" |
| 3/16"-1/2" | 3-1/8" | 6 | 1/4" |
| 3/16"-7/8 | 3-1/4" | 12 | 3/8" |
| 9/16"-1" | 3-1/4" | 8 | 3/8" |
| 7/8"-1 3/8" | 3-1/4" | 5 | 3/8" |
| Size | Overall length | Steps | Shank Dia |
|---|---|---|---|
| 4mm-12mm | 65mm | 9 | 6mm |
| 4mm-20mm | 75mm | 9 | 8mm |
| 4mm-30mm | 100mm | 14 | 10mm |
| 4mm-32mm | 104mm | 15 | 10mm |
| 4mm-39mm | 107mm | 13 | 10mm |
| 5mm-35mm | 78mm | 13 | 13mm |
| 6mm-37mm | 100mm | 12 | 12mm |
| 6mm-38mm | 100mm | 12 | 12mm |
