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QL40 Shank DTH Drill Bits from YKDrill are built for high-performance, high-air-pressure drilling in medium to hard rock formations. Featuring a convex face design and a combination of domed and ballistic tungsten carbide buttons, these bits offer efficient rock penetration, excellent wear resistance, and smooth borehole control.
Available in sizes from 108mm to 130mm, these bits are widely used in mining, water well drilling, geothermal energy, and civil construction.
| Head Shape | Head Diameter (mm) | Shank Length (mm) | Spline | Port Holes | Button Type (Optional) | Gauge Buttons | Front Buttons | Weight (Kg) |
|---|---|---|---|---|---|---|---|---|
| Convex Face | 108 | 280 | 10 | 2 | Domed + Ballistic | 7 × Ø16mm | 6 × Ø14mm | 9.42 |
| Convex Face | 115 | 280 | 10 | 2 | Domed + Ballistic | 7 × Ø16mm | 6 × Ø14mm | 9.5 |
| Convex Face | 127 | 280 | 10 | 2 | Domed + Ballistic | 8 × Ø16mm | 4 × Ø14mm + 3 × Ø13mm | 10.7 |
| Convex Face | 130 | 280 | 10 | 2 | Domed + Ballistic | 8 × Ø16mm | 4 × Ø14mm + 3 × Ø13mm | 10.9 |
✅ QL40 Shank – Designed to fit most QL40 series high-pressure DTH hammers
✅ Convex Face – Ideal for faster penetration in hard and abrasive formations
✅ Domed + Ballistic Buttons – Excellent balance of strength and cutting speed
✅ Optimized Air Flushing – 2 ports ensure better cleaning and cooling
✅ Durable Alloy Steel Body – Heat-treated for strength and long service life
✅ Precision Machining – Ensures better straightness and energy transfer
⛏️ Mining and Quarrying – Bench drilling, blasting holes
💧 Water Well Drilling – Efficient in deep well applications
🌡️ Geothermal Drilling – High-temperature drilling with good flushing
🏗️ Construction & Civil Engineering – Foundation piling, ground stabilization
Packaging: Wooden case or steel rack
MOQ: 2 pieces
Lead Time: 5–10 working days
Shipping: Available by sea, air, or express (DHL, FedEx, UPS)
🏭 Manufacturer Direct Supply – 15+ years in DTH drilling tools
📐 Customization Available – Face type, button style, flushing holes
🔍 Strict QC – 100% inspection before shipment
🌍 Global Reach – Exported to 40+ countries
💬 Fast Support – Quick response and technical assistance
Need reliable QL40 DTH bits for your drilling project? Reach out today for a free quote and professional support.
💼 Company: YKDrill
📧 Email: ykdrill@ykdrill.com
🌐 Website: www.ykdrill.com
