Drifting and Tunneling Tools
Drill Retrac Button Bits
Spherical and Parabolic
|Drill Bit||Diameter, mm||No x Button Diameter||Flushing Hole||Weight approx., kg|
| ||Spherical / Parabolic Buttons|
|45||3 x 8||6 x 9||40||3||-||1.1|
|48||3 x 9||6 x 10||30||3||-||1.2|
|51||3 x 9||6 x 10||30||3||-||1.4|
|64||3 x 10, 1x 10||6 x 11||35||3||-||2.2|
|64||4 x 10||8 x 10||40||2||-||2.2|
4 x 11,
1 x 11
|8 x 11||35||4||1||3.5|
This type of bit is well known for its high wear resistance on
medium-hard to hard abrasive rock formations (between 200 Mpa to
260 Mpa compressive strength). Featuring spherical tungsten carbide
inserts that is known to have strong configuration against carbide
fracture. Used in drifting and tunneling.
Spherical Button Characteristics:
1. Universal button
2. Good wear resistance
3. Best suited for hard ground
4. 27000-48000PSI(180 to 320Mpa)
5. Suited for abrasive to very abrasive drilling conditions
Ballistic Button Characteristics:
1. Fast Penetration
2. Best suited for soft rock
3. 10000-20000PSI(70 to 140Mpa)
4. Suited for non-abrasive drilling conditions
1. Underground mining
3. In granite and marble quarry
4. Gold Mine
5. Dimensional Stone Industry
Package: Carton or Wooden Box; also we can follow customers' requirements.
Delivery time is around 15-25 days.
P.S. We can design and manufacture products according to customers’
The MIROC® Rock Drilling Tools product line by KSQ Technologies (Beijing) Co.Ltd. is the result of years of advanced engineering, precision
manufacturing, and dedication to the use of high-quality materials.
MIROC® Rock Drilling Tools are used by many drilling professionals
related to mining, construction, tunneling, and quarrying projects
around the globe.
KSQ Technologies (Beijing) Co. Ltd.
Elisa Zarovkina (Елизавета)