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Carbide Step Drill Bits - Straight Shank, DLC Coated, Stub
Reducing the number of steps enables higher efficiency drilling of pilot holes
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Part Number
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| Part Number |
|---|
| DLC-SC-SDR5.1-18 |
| DLC-SC-SDR6.8-24 |
| DLC-SF-SDR3.4-12 |
| DLC-SF-SDR5.1-18 |
| DLC-SF-SDR8.5-20 |
| DLC-SF-SDR8.5-30 |
| DLC-SF-SDR10.3-36 |
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Specifications
| Model Number | Step Length ℓ | Large Diameter D1 | Groove Length ℓ1 | Overall Length L | Shank Diameter d | |
| Tip Diameter D | ||||||
| DLC-SC-SDR (For chamfering) DLC-SF-SDR (For cutting) | 3.4 | 8 | 6 | 21 | 73 | 6 |
| 12 | 6 | 25 | 77 | 6 | ||
| 4.3 | 10 | 7 | 26 | 79 | 7 | |
| 15 | 7 | 31 | 84 | 7 | ||
| 5.1 | 12 | 8 | 30 | 84 | 8 | |
| 18 | 8 | 36 | 90 | 8 | ||
| 6.8 | 16 | 10 | 40 | 96 | 10 | |
| 24 | 10 | 48 | 104 | 10 | ||
| 8.5 | 20 | 12 | 50 | 112 | 12 | |
| 30 | 12 | 60 | 122 | 12 | ||
| 10.3 | 24 | 14 | 60 | 124 | 14 | |
| 36 | 14 | 72 | 136 | 14 |
For Cutting Conditions, Refer to >>Click here.
More Information
● The DLC coating has excellent wear-resistant and welding-resistant properties that make it ideal for machining non-ferrous metals such as aluminum, copper, etc.
● A strong torsion shape provides superior discharge of cutting chips and cutting capability.
● Designed for very frequent drilling of pilot holes for M4 – M12 metric coarse thread.
● Two models of step angle are available for chamfering and cutting.
● High-efficiency hole drilling is achieved by reducing the chamfering process. (DLC-SC-SDR)
● When drilling pilot holes for bolts, relief holes can also be drilled at the same time. (DLC-SF-SDR)
Basic Information
| Work Material | Cast Iron / Aluminum / Copper | Tool Material Type | Carbide | Link Model | Straight Shank |
|---|---|---|---|---|---|
| Coating | Included | Coating Type | DLC | Oil Hole | None |
| Point Angle(°) | 130 | Thinning | Included |
- The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .
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