27mm / 28mm Diamond Core Drilling Bits for Hard Stone Mining Drill
Introduction of PDC:
Polycrystalline Diamond Compact(PDC), is manufactured with a
diamond layer attached to a
carbide substrate. Combining the properties of both super hardness
and abrasion resistance
of diamond with outstanding strength and toughness of tungsten
carbide, PDC has been
widely used in mechanical industry,oil well drilling,geological
prospecting drilling and coal mining.
It possess of high wear resistance like diamond, at the same time
the impact resistance like hard
alloy and that’s made it the best material as a drill bit cutter.
Reinforced PDC has higher dense
diamond powder, claw hard alloy substrate made the two layers solid
as whole one. So,
there-inforced PDC of supper wear resistance, longer service life
and high efficiency.
Description of coal mine rock drill bit:
PDC anchor shank bit is the most basic part of roadway support in
coal mines. It can bound the
surrounding rock of roadway together, and make the surrounding rock
to support itself. Roofbolt
drill bit is a kind of drilling tool for fixing anchor bolt of coal
mine. The two wings of our PDC
roofbolt drill bit adopt PDC (Polycrystalline Diamond Compact) as
the cutting tooth, the application
of PDC has greatly improved the drilling efficiency of roofbolt
drill bit, and is taking the place of tungsten
carbide roofbolt drill bit gradually.
Features of coal mine rock drill bit:
1. The cutting tools adopts new type superhard material;shelf life
of drill bit is high.
2. Drilling efficiency of medium hard and harder stratum can be
greatly improved.
3. Cutting edge is wearable, no need of polishing, easy to operate.
Application of coal mine rock drill bit:
Anchor-shank drill bit with PDC cutter is mainly applied to the
anchor network support hole drilling in
underground coal mine, transportation,water conservancy and
hydrpower,etc.
Specification of coal mine rock drill bit: | | | | | | | |
| | | | | | | |
| Type | D(mm) | H(mm) | Wings No. | PDC cutter | Waterpore |
| Shape | Quantity | Quantity | D(mm) |
| ZW28A | 28 | 48 | 2 | half | 2 | 1 | 5 |
| ZW28B | 28 | 48 | 2 | whole | 2 | 1 | 5 |
| ZW30A | 30 | 48 | 2 | half | 2 | 1 | 5 |
| ZW30B | 30 | 48 | 2 | whole | 2 | 1 | 5 |
| ZW32A | 32 | 48 | 2 | half | 2 | 1 | 5 |
| ZW32B | 32 | 48 | 2 | whole | 2 | 1 | 5 |
| ZW42B | 42 | 60 | 3 | Half+whole | 2+2 | 3 | 5 |
Mining Drilling Tools | Main Standard(mm) |
D | H | L | M |
Thread joint | 27 | 44 | 17 | M14×1.5 |
27 | 54 | 17 | M12×1.75 |
28 | 54 | 20 | M12×1.75 |
29 | 52 | 18 | M14×1.5 |
30 | 50 | 18 | M14×1.5 |
32 | 52 | 22 | M14×1.5 |
32 | 56 | 22 | M12×1.75 |
Threaded Button Bit
| T38 button bit | | | | |
| Bit Dia. | Buttons and Size (mm) | Flushing Hole | Weight |
| mm | Front | Gauge | Front | Side | kg |
| 1 | 64 | 3×10, 1×10 | 6×11 | 3 | - | 1.7 |
| 2 | 70 | 3×10, 1×10 | 6×12 | 3 | - | 1.8 |
| 3 | 76 | 3×11, 1×11 | 6×12 | 3 | 1 | 2.6 |
| 4 | 89 | 3×11, 2×11 | 6×13 | 3 | 1 | 3.3 |
| R38 button bit | | | | |
| Bit Dia. | Buttons and Size (mm) | Flushing Hole | Weight |
| mm | Front | Gauge | Front | Side | kg |
| 1 | 64 | 3×11 | 6×12 | 3 | - | 1.8 |
| 2 | 70 | 3×10, 1×10 | 6×12 | 3 | - | 1.8 |
| 3 | 76 | 3×11, 1×11 | 6×12 | 2 | - | 2.6 |
| 4 | 89 | 4×13, 1×13 | 8×13 | 4 | - | 3.3 |
| R32 button bit | | | | |
| Bit Dia. | Buttons and Size (mm) | Flushing Hole | Weight |
| mm | Front | Gauge | Front | Side | kg |
| 1 | 41 | 2×8 | 5×9 | 1 | 1 | 0.7 |
| 2 | 43 | 2×9 | 5×10 | 1 | 1 | 0.7 |
| 3 | 45 | 2×9 | 5×11 | 1 | 1 | 0.8 |
| 4 | 48 | 2×9 | 5×11 | 1 | 1 | 0.9 |
| 5 | 51 | 2×10 | 5×11 | 1 | 1 | 1 |
| 6 | 57 | 3×9 | 6×11 | 3 | - | 1.3 |
| 7 | 64 | 3×11 | 6×12 | 3 | - | 1.6 |
| 8 | 70 | 4×11 | 8×11 | 2 | - | 2.6 |
| 9 | 76 | 4×11 | 8×11 | 2 | - | 2.8 |
| R28 button bit | | | | |
| Bit Dia. | Buttons and Size (mm) | Flushing Hole | Weight |
| mm | Front | Gauge | Front | Side | kg |
| 1 | 37 | 2×7 | 5×9 | 1 | 1 | 0.5 |
| 2 | 38 | 2×7 | 5×9 | 1 | 1 | 0.6 |
| 3 | 41 | 2×8 | 5×9 | 1 | 1 | 0.7 |
| 4 | 43 | 2×9 | 5×9 | 1 | 2 | 0.8 |
| 5 | 45 | 2×9 | 5×10 | 1 | 2 | 0.9 |
| 6 | 48 | 2×9 | 5×11 | 1 | 2 | 1 |
1. Methods of Payment:
T/T (Telegraphic Transfer) or Western Union or L/C at sight
2. Handling time for an order
Based on order quantity, normally it takes 25 days for production.
Only 2 or 3 days if we have stock on your request size.
3. Shipping way
Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or
by air
Bulk order: we suggest by air or by sea.
4. Quality Control
We have our own experienced QC.
There will be strict inspection and testing for every order before
shipping out.
5. After Services:
1. Our sales team will response for your question within 24 hours
(Holidays Excluded)
2. Technical Support will be available in any time
3. Free replacement will provide once the failure confirmed caused
by our product quality
Company Profile:
KSQ Technologies (Beijing) Co. Ltd. is a company that shall cater
to the needs of the construction and mining industries, with
consideration on providing solutions to the following unique
problems:
- Hazardous environment
- Acts, regulations, and other government guidelines that has to be
followed
- Significant differences in the way people work, mostly due o
physical constraints
- Avoiding downtime on major equipment which can cost tens of
thousands of dollars per hour. The best solution with the most
reasonable cost is a significant driver.
