15D · Carbide Coolant-Thru Drill · ø12.50mm
ø12.50 mm 15D Solid Carbide
Coolant-Thru Drill
At 15× diameter, this drill enters territory typically reserved for gun drills or BTA deep-hole systems — but at a fraction of the setup complexity. Purpose-engineered for crankshaft oil passages, long tie bolts, and heat-exchanger tube sheets. Full-diameter internal coolant delivery is mandatory.
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Reference price
$517.91
Ref. factory price (USD)
Based on rod stock cost as of 2026-03-31. Final quotation may differ.
ø12.50mm 15D Coolant Drill
SKU: SCD-CTD-15D-D1250
✓ Factory direct pricing
✓ MOQ 1 piece, stock sizes ship 1–5 days
✓ Custom lengths & diameters available
Full Dimensions
Technical Specifications
| Cutter Diameter (D1 h7) | ø12.50 mm |
| Imperial Equivalent | 0.4921" |
| Flute Length (L2) | 248.00 mm |
| Shank Diameter (D2 h6) | ø14.00 mm |
| Overall Length (L1) | 297.00 mm |
| Depth Ratio | 15D (15× diameter) |
| Point Angle | 140° |
| Helix Angle | 30° |
| Number of Flutes | 2 |
| Coating | TiAlN / TiSiN Oerlikon Balzers BALINIT® |
| Substrate | K10/K20 Solid Carbide 10% Co binder |
| Coolant | Internal twin-channel |
| Tolerance | DIN 1414 · ISO 5419 |
| MOQ | 1 piece |
| Lead Time (standard) | 1–5 business days |
| Lead Time (custom) | 5–15 business days |
15D Dimensional Drawing
Where This Tool Excels
ø12.50mm 15D — recommended applications
- ▸ Structural steel fabrication
- ▸ Wind-turbine hub drilling
- ▸ Heavy-vehicle transmission cases
- ▸ Mould and die cooling channels
Material Compatibility
Recommended Work Materials
15×D Ultra-Deep Coolant-Thru Drill
Ultra deep — crankshaft passages, long tie bolts, heat exchangers
Same Depth Ratio, Adjacent Sizes
Nearby 15D Diameters
Ready to Order ø12.50mm 15D Coolant Drills?
Factory direct. MOQ 1 piece. Tell us quantity and delivery date — we'll confirm lead time and pricing within 4 business hours.