Taper Rock Drill Bit
Taper drill bits are "taper-fit" rotary-percussive tools designed for shallow-hole (0.3-6 m) rock drilling with hand-held or air-leg rock drills.
A short tapered shank (4°, 5°, 7°, 11° or 12°) is driven into the matching taper of the drill rod; no thread or coupling is needed, giving extremely fast bit changes and low coupling cost.
A short tapered shank (4°, 5°, 7°, 11° or 12°) is driven into the matching taper of the drill rod; no thread or coupling is needed, giving extremely fast bit changes and low coupling cost.
Impact force is delivered from the top (via jackhammers, stopers or light-duty drill rigs), so they fall under the Top Hammer drill bit category and are typically used for drilling holes with a depth of ≤ 15 meters.
Bit types
- Button Bit – spherical / ballistic buttons, hard & abrasive rock
- Cross Bit – 4-blade cruciform, medium rock, faster ROP
- Chisel Bit – single / double chisel, soft rock, lowest cost
Connect shank Size： Φ19, Φ22, Φ25 shank
Tapered connection：6° / 7° / 11° / 12° taper
Qty of button： 5-8 buttons
Bit Diameter：32 mm – 60 mm
Some Bit Range
| Taper Angle | Head Ø (mm) | Skirt / Length (mm) | Button Type | Typical Machine |
| 4° | 20-28 | 55 / 70 | Cross / X | YT24, YT28 |
| 5° | 22-34 | 55 / 70 / 80 | Cross / X / 4×Spherical | YT27, YT28 |
| 7° | 22-45 | 70 / 80 | 5-8×Spherical / 5-7×Ballistic | YT28, YT29 |
| 11° | 28-45 | 70 / 80 | 7-9×Spherical / 7-8×Ballistic | YSP45 |
| 12° | 30-70 | 70 / 80 / 100 / 120 | 7-12×Spherical / 7-11×Ballistic / Cross | YT29A, BBC120F |
Competitive Advantages
This taper drill bit range combines the strengths of diverse suppliers, offering reliable performance, broad compatibility, and cost efficiency for global drilling professionals. For custom sizes or bulk orders, contact our team to match your specific project requirements.
