JCD · 8D · ø17mm · C20 (Ds 20 mm)
C20-170-8D
ø17mm 8D JCD Replaceable-Tip Drill Shank
The 8D shank brings replaceable-tip economics to deep-hole applications where conventional solid carbide tools are prohibitively expensive. Designed for oil passage drillings, structural steel, and heavy engineering components. Requires internal coolant at ≥ 20 bar for reliable chip flush at full depth.
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C20-170-8D
ø17mm 8D Modular Shank · C20 (Ds 20 mm)
✓ Factory direct — no distributor margin
✓ MOQ 1 piece, ships 1–5 days
✓ Matching insert HCD-17.0-17.9 also available
Full Dimensions
Technical Specifications
| Product Code | C20-170-8D |
| Cutting Diameter (D) | 17 mm |
| Overall Length (L1) | 136 mm |
| Body Diameter (D1) | 24 mm |
| Shank Diameter (Ds) | 20 mm (C20 (Ds 20 mm)) |
| Depth Ratio | 8D (8× diameter) |
| Required Insert | HCD-17.0-17.9 |
| Clamping Screw | CM2.5*14.2 |
| Torx Wrench | T8 |
| Coolant | Internal through-coolant up to 80 bar |
| System | JCD Replaceable-Tip Modular Drill |
| MOQ | 1 piece |
| Lead Time | 1–5 business days |
8D Shank Diagram
Where This Tool Excels
ø17mm 8D — recommended applications
- ▸Automotive transmission cases
- ▸Pump housing ports
- ▸Gearbox bolt-hole patterns
- ▸General CNC machining
Material Compatibility
Recommended Work Materials
Required Insert
Same Diameter, Different Reach
ø17.00 mm Also Available In
Same Depth Ratio, Adjacent Sizes
Nearby 8D Diameters
Order C20-170-8D Today
Factory direct. MOQ 1 piece. Don't forget to order matching insert HCD-17.0-17.9 for immediate production.