Tungsten Carbide Inserts Retractable Drill Bit ST68 Drop Center /
Flat Face
Retrac Button Bit ST68
Drop Center/ Flat Face
Specifications:
| Drill Bit | Diameter | No x Buttons Diameter | Flushing Hole | Weight, kg |
| mm | foot | Front | Gauge | Angle | Front | Side |
| Retrac Button Bit ST68 | Spherical and Ballistic |
| 102 | 4 | 4x12,4x12 | 10x12 | 35 | 4 | - | 9.3 |
| 102 | 4 | 4x14,2x12 | 8x14 | 35 | 4 | - | 9.3 |
| 110 | 4 3/8 | 6x14 | 8x16 | 35 | 2 | - | 10.0 |
| 115 | 4 1/2 | 6x14 | 8x16 | 35 | 2 | - | 10.0 |
| 127 | 5 | 8x14 | 9x16 | 35 | 3 | - | 15.0 |
| 140 | 5 1/2 | 9x14 | 9x16 | 35 | 3 | - | 17.8 |
Description:
This type of bit is well known for its wear resistance on soft to
medium-hard rock formations (between 55 Mpa to 165 Mpa compressive
strength). Featuring spherical tungsten carbide inserts that is
known to have strong configuration against carbide fracture.
Recommended for eliminating hole deviation. Used in benching and
long hole drilling.
Features:
1. High strength chromium-molybdenum steel with high fatigue strength
and excellent wear resistance;
2. Manufactured from high grade steel and processed using
state-of-the-art CNC machinery and heat treatment.
3. For unconsolidated rock formation.
4. Designed to improve hole straightness, as well as to assist in
retrieval of the drilling string.
5. The splines will also improve the hole flushing characteristics of
the bit due to the chip ways between the splines.
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
Application:
1. Underground mining
2. Drifting anf Tunneling
3. In granite and marble quarry
4. Gold Mine
5. In benching and long hole drilling
Package: Wooden Box; also we can follow customers' requirements.
Delivery time is around 15-25 days.
Information need to know before order
1. Thread
2. Button Bit Diameter
3. Face Design: Flat Face or drop center
3. Body/Skirt: Rugular or retract body
4. Carbide/ Button: Spherical or Ballistic
MIROC® Production:
Integral Rods
Plug Hole Rods
Tapered Drilling Tools
Extension Drilling Tools
Drifting and Tunneling Tools
Reaming Tools
Shank Rods
Coupling Sleeves
Shank Adapters (Striking Bars)
Down-the-hole (DTH) Bits
Down-the-hole (DTH) Hammers
P.S. We can design and manufacture the personalized products to meet
your specical apllication, such as changing the tungsten carbide
insert profile (spherical, ballistic, etc.), face profile (flat
face, drop center, etc.), and body type( Normal and retrac etc.).
Our Service
Compared with the oversea brands, our advantages are bellowing:
1. Our products can match over 95% against the original products
2. Price are competitive against the famous brands and best quality
against the small factory
3. Our factory has been specialized in manufacturing drilling tools
and spare parts for over 10 years.
4. We have advanced technology and equipment.
5. Our technician has more than 20 year’s professional working
experience.
6. Rock drilling tools are exported throughout the world. Main
market: Norway, USA, Canada, Brazil, Uganda, Iran, Philippines,
Thailand, India, etc.
Now we are looking forward to make the market bigger and stronger
with your join!
Company Information:
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)
