Cop32 Cop34 DHD330 Br33 High Air Pressure DTH Hammer Rock Drill Bits for Quarry

$300.00 - $9,800.00
Min. Order
1 Piece
Choose your specifications
Company Information

Xiamen Bestlink Factory Co., Ltd.

CN Manufacturer, Trading Company
Response Time
Response Rate:
US$ 300,000+
10 Years Paid Supplier Supplier Trade Assurance
Learn More

Quick Details

Port: Xiamen/Shenzhen/Tianjin/Qingdao
Payment Terms: L/C,T/T,Western Union,MoneyGram
Supply Ability: 20000 Piece/Pieces per Month
Applicable Industries: Building Material Shops,Machinery Repair Shops,Construction works&nbsp;,Energy &amp; Mining
Place of Origin: Fujian China
Brand Name: BESTLINK
Type: Drill Bit
Machine Type: Drilling Equipment
Certification: API
Material: Carbon Steel
Processing Type: Forging
Use: Well Drilling
air pressure: 0.7-2.5 Mpa
connect thread: API 2 3/8&quot; API 3 1/2&quot; API 4 1/2&quot; API 6 5/8&quot; REG
drilling hole diameter: 85mm-305mm
usage: water well, oil, gas deep down the hole drilling
application: COP MISSION SD QL DHD IR BR33
size: 3&quot; 3.5&quot; 4&quot; 5&quot; 6&quot; 8&quot; 10&quot; 12&quot;
HS CODE: 82071990
Packaging Detail: PLYWOOD BOX or CARTON
Product Description
DTH hammer and bits banner.jpg


DTH hammer 


With professional manufacturing experience in DTH hammer production, our factory can supply you with high pressure and medium to low pressure DTH hammers. It strictly matches with API standard and other Chinese industry standards.It is durable for being produced with advanced craftwork and good material.


It also has the following advantages:

1. Deliver maximum energy to drilling bit, fast drilling speed and low air consumption due to the special inner structure of HD series DTH hammer designed according to newest rock drilling theory.

2. Smooth performance and long service life of HD series DTH hammer due to high quality alloy steel materials and advanced processing technology adapted.

3. Low problem rate and easy to maintenance due to simple, reliable and easy assemble and disassemble inner structure of hammer.

4. Easy to depart bit from hammer due to multi—head thread connecting chuck and cylinder of hammer.

5. Interchangeable with DTH bit and drill pipe




DTH bit is also our main product. After mang years search, we have rich experience in development and manufacturing high quality products, which adopted high-quality raw materials, advanced technology and passed through strictly inspection.


1.high and low air pressure down-the-hole drill bits 
2.Low air pressure holeDia.:65-220mm  

3.High air pressure hole Dia.:85-305mm  

4.Face type:drop center/concave/convex/double gauge/flat  

5.Our DTH Bit can be suitable for many types of DTH Hammer, such as XL, Mission, COP, IR, Mach, Demag, SD, Bulroc, Halco Mach, Digger etc.


DTH hammers.jpgDTH bit ps.jpg

project case when using high air pressure dth hammer.jpg



------------------Specifications of High Air Pressure DTH Hammers--------------------------------


 dth hammer with and without foot valve.jpg


High Air Pressure DTH Hammer (with foot valve)


It is a kind of valveless high air pressure DTH hammer with foot valve.



1.Valveless air distribution, more reliable;

2.Piston with simple but compact design, long life;

3.More efficient energy transfer, faster drilling speed, lower air consumption and lower oil consumption.

4.Fewer internal parts, simple structure, longer life, less failure and easier to maintain, with the all heat treated parts;

5.Easy to disassemble, thanks for the top sub, drive chuck and external cylinder all are connected by multi-step thread.


DTH hammer typeHD35HD45HSD4HQL4
Length(less bit) mm930mm103010841097
Weight(less bit) kg25kg3940.541
External diameter mmΦ82mmΦ99Φ99Φ99
Bit shankDHD3.5COP44 DHD340SD4QL40
Hole range(mm)Φ90-110Φ110-135Φ110-135Φ110-135
Connection threadAPI 2 3/8" Reg.API 2 3/8"RegAPI 2 3/8"RegAPI 2 3/8"Reg
Working pressure1.0-1.5Mpa1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa
Impact rate at 1.5-1.7Mpa28Hz27Hz27Hz27Hz
Recommended Rotation speed25-40r/min25-40r/min25-40r/min25-40r/min
Air consumption1.0Mpa4.5m3/min6.0m3/min6.0m3/min6.0m3/min


DTH hammer typeHD55HD55CHSD5HQL5
Length(less bit) mm1214116011751156
Weight(less bit) kg76.572.572.573
External diameter mmΦ125Φ125Φ125Φ125
Bit shankCOP54 DHD350RHD55C DHD350QSD5QL50
Hole range(mm)Φ135-155Φ135-155Φ135-155Φ135-155
Connection threadAPI 2 3/8"RegAPI 2 3/8"RegAPI 3 1/2"RegAPI 3 1/2"Reg
API 3 1/2"RegAPI 3 1/2"Reg  
Working pressure1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa
Impact rate at 1.5-1.7Mpa25Hz25Hz25Hz25Hz
Recommended Rotation speed20-35r/min20-35r/min20-35r/min20-35r/min
Air consumption1.0Mpa9.0m3/min9.0m3/min9.0m3/min9.0m3/min


DTH hammer typeHD65HSD6HQL6HD85
Length(less bit) mm1248126112121492
Weight(less bit) kg10010095188
External diameter mmΦ142Φ142Φ146Φ180
Bit shankCOP64 DHD360SD6QL60COP84 DHD380
Hole range(mm)Φ155-190Φ155-190Φ155-190Φ195-254
Connection threadAPI 3 1/2"RegAPI 3 1/2"RegAPI 3 1/2"RegAPI 4 1/2"Reg
Working pressure1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa
Impact rate at 1.5-1.7Mpa23Hz23Hz23Hz20Hz
Recommended Rotation speed20-30r/min20-30r/min20-30r/min20-30r/min
Air consumption1.0Mpa10.0m3/min10.0m3/min10.0m3/min15.0m3/min


DTH hammer typeHSD8HQL8HSD10HN100
Length(less bit) mm1463146515021510
Weight(less bit) kg192182290288
External diameter mmΦ180Φ180Φ226Φ226
Bit shankSD8QL80SD10NUMA100
Hole range(mm)Φ195-254Φ195-254Φ254-311Φ254-311
Connection threadAPI 4 1/2"RegAPI 4 1/2"RegAPI 4 1/2"RegAPI 6 5/8"Reg
  API 6 5/8"Reg 
Working pressure1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa
Impact rate at 1.5-1.7Mpa20Hz20Hz18Hz18Hz
Recommended Rotation speed15-25r/min15-25r/min15-25r/min15-25r/min
Air consumption1.0Mpa15.0m3/min15.0m3/min22.0m3/min22.0m3/min


DTH hammer typeHD1120HSD12HN120NH125
Length(less bit) mm1900188019001900
Weight(less bit) kg480487485480
External diameter mmΦ275Φ275Φ275Φ275
Bit shankDHD1120SD12NUMA120NUMA125
Hole range(mm)Φ305-445Φ305-445Φ305-445Φ305-445
Connection threadAPI 6 5/8"RegAPI 6 5/8"RegAPI 6 5/8"RegAPI 6 5/8"Reg
Working pressure1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa
Impact rate at 1.5-1.7Mpa16Hz16Hz16Hz16Hz
Recommended Rotation speed15-25r/min15-25r/min15-25r/min15-25r/min
Air consumption1.0Mpa30.0m3/min30.0m3/min30.0m3/min30.0m3/min


High Air Pressure DTH Hammer (without foot valve)


It's a king of high air pressure DTH hammer without footvalve,our newest design. it's also one of the most advanced DTH hammer in the world.


It has the following advantages

1.Out of the trouble of foot valve fracture and expansion and contraction;

2.Lower energy consumption and higher impact frequency. The drilling speed is 15-30% higher than the one with foot valve;

3.Simple structure, reliable parts, long life, easy and cheap maintenance;

4.Lower air and oil consumption, the oil consumption is about 10% lower than the one with foot valve.

According to your request, the top sub can be made into two spanners, an air controlling hole can be drilled on the check valve to provide more efficient cuttings discharge. 


DTH hammer typeHD25AHD35AHD45AHD45S
Length(less bit) mm8728881011986
Weight(less bit)  kg162543.237
External diameter  mmΦ71Φ82Φ99Φ92
Bit shankHD25IR3.5COP44 DHD340COP44 DHD340
Hole range(mm)Φ76-90Φ90-115Φ110-135Φ105-120
Connection threadT42*10*1.5API 2 3/8"RegAPI 2 3/8"RegAPI 2 3/8"Reg
Working pressure1.0-1.5Mpa1.0-1.5Mpa1.0-2.5Mpa1.0-2.5Mpa
Impact rate at 1.5/1.7Mpa25Hz25Hz30Hz30Hz
Recommended Rotation speed22-35r/min25-40r/min22-35r/min25-40r/min
Air consumption1.0Mpa4.0m3/min3.8m3/min6.0m3/min5.0m3/min


DTH hammer typeHSD4AHM4AHQL4AHD55A
Length(less bit) mm1012100510701110
Weight(less bit) kg40404069
External diameter mmΦ99Φ99Φ99Φ125
Bit shankSD4HM4QL40COP54 DHD350R
Hole range(mm)Φ110-135Φ110-135Φ110-135Φ135-155
Connection threadAPI 2 3/8"RegAPI 2 3/8"RegAPI 2 3/8"RegAPI 2 3/8"Reg
   API 3 1/2"Reg
Working pressure1.5-2.0Mpa1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa
Impact rate at 1.5/1.7Mpa30Hz30Hz30Hz28Hz
Recommended Rotation speed25-40r/min25-40r/min25-40r/min20-35r/min
Air consumption1.0Mpa6.0m3/min5.0m3/min5.0m3/min7.0m3/min


DTH hammer typeHD55SHD55C(A)HM5AHSD5A
Length(less bit) mm1110110211101090
Weight(less bit) kg666868.570
External diameter mmΦ116Φ125Φ125Φ125
Bit shankCOP54 DHD350RHD5C DHD350QHM5SD5
Hole range(mm)Φ127-145Φ135-155Φ135-155Φ135-155
Connection threadAPI 2 3/8"RegAPI 2 3/8"RegAPI 2 3/8"RegAPI 2 3/8"Reg
API 3 1/2"RegAPI 3 1/2"RegAPI 3 1/2"RegAPI 3 1/2"Reg
Working pressure1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa
Impact rate at 1.5/1.7Mpa28Hz28Hz28Hz28Hz
Recommended Rotation speed20-35r/min20-35r/min20-35r/min20-35r/min
Air consumption1.0Mpa7.0m3/min8.0m3/min7.0m3/min7.0m3/min


DTH hammer typeHQL5AHD65AHM65AHSD6A
Length(less bit) mm1090123811611182
Weight(less bit) kg67989090
External diameter mmΦ125Φ142Φ146Φ146
Bit shankQL50COP64 DHD360HM65ASD6
Hole range(mm)Φ135-155Φ155-203Φ155-203Φ155-203
Connection threadAPI 2 3/8"RegAPI 3 1/2"RegAPI 3 1/2"RegAPI 3 1/2"Reg
API 3 1/2"Reg   
Working pressure1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa
Impact rate at 1.5/1.7Mpa28Hz25Hz25Hz25Hz
Recommended Rotation speed20-35r/min20-30r/min20-30r/min20-30r/min
Air consumption1.0Mpa7.0m3/min9.0m3/min9.0m3/min9.0m3/min


DTH hammer typeHQL6AHD75AHD85AHM8A
Length(less bit) mm1183125813591338
Weight(less bit) kg92120175176
External diameter mmΦ146Φ165Φ180Φ180
Bit shankQL60COP64 DHD360COP84 DHD380HM8A
Hole range(mm)Φ155-203Φ175-216Φ195-254Φ195-254
Connection threadAPI 3 1/2"RegAPI 3 1/2"RegAPI 4 1/2"RegAPI 4 1/2"Reg
Working pressure1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa
Impact rate at 1.5/1.7Mpa25Hz23Hz22Hz22Hz
Recommended Rotation speed20-30r/min20-30r/min15-25r/min15-25r/min
Air consumption1.0Mpa9.0m3/min11.0m3/min12.0m3/min12.0m3/min


Length(less bit) mm1330133013401525
Weight(less bit) kg174171203316
External diameter mmΦ180Φ180Φ203Φ226
Bit shankSD8QL80QL80SD10
Hole range(mm)Φ195-254Φ195-254Φ216-254Φ254-311
Connection threadAPI 4 1/2"RegAPI 4 1/2"RegAPI 4 1/2"RegAPI 6 5/8"Reg
Working pressure1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa
Impact rate at 1.5/1.7Mpa22Hz22Hz22Hz20Hz
Recommended Rotation speed15-25r/min15-25r/min15-25r/min15-25r/min
Air consumption1.0Mpa12.0m3/min12.0m3/min16.0m3/min22.0m3/min


DTH hammer typeHN100AHD1120AHSD12AHN120AHN125A
Length(less bit) mm15451880186018801880
Weight(less bit) kg305474480475470
External diameter mmΦ226Φ275Φ275Φ275Φ275
Bit shankNUMA100DHD1120SD12NUMA120NUMA125
Hole range(mm)Φ254-311Φ305-445Φ305-445Φ305-445Φ305-445
Connection threadAPI 6 5/8"RegAPI 6 5/8"RegAPI 6 5/8"RegAPI 6 5/8"RegAPI 6 5/8"Reg
Working pressure1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa
Impact rate at 1.5/1.7Mpa20Hz20Hz20Hz20Hz20Hz
Recommended Rotation speed15-25r/min15-25r/min15-25r/min15-25r/min15-25r/min
Air consumption1.0Mpa22.0m3/min28.0m3/min28.0m3/min28.0m3/min28.0m3/min



high air pressure dth hammers.jpg


---------------------------------Selection of DTH BIT FACE SHAPE AND CARBIDE BUTTON SHAPE--------------------


A: Bit face shape selection

DropCenter Bit
For high penetration rates in soft to medium-hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control.
Concave face
The all-round application bit face specifically for medium hard and homogenerous rock formations. Good hole deviation control and good flushing capacity.
Convex face
For high penetration rates in soft to medium-hard with low to medium air pressures. It is the most resistance to steel wash, and may reduce the load and wear on the gauge buttons, but poor hole deviation control.
Double Gauge face
This kind of face shape is suitable for fast penetration rates in medium to hard rock formations. Designed for high air pressures and good resistance to steel wash step gauge bit.
Flat Face Bit
This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressures. Good penetration rates an resistance to steel wash.


B: Insert Carbide Button Shape Selection


Matching the insert to the job requirements is essential in achieving the desired results.  Different buttons is ideal for different ground conditions, abrasion levels, PSIs and penetration levels.  In general, the larger the number of gauge buttons the better overall performance, especially in hard rock.


• Height 0.5 Ø

• Application Strength - multipurpose

• Best suited to hard ground

• 25,000 to 45,000 PSI (170 to 300 MPa)

• Abrasive to very abrasive
Ballistic Button
• Height 0.75 Ø

• Application Strength - fast penetration

• Best suited to soft ground

• 10,000 to 20,000 PSI (70 to 140 MPa)

• Non abrasive ground
Parabolic Button (semi ballistic)
• Height 0.6 Ø

• Application Strength - fast penetration

• Best suited to medium ground

• 15,000 to 25,000 PSI (100 to 170 MPa)

• Mildly abrasive ground
Conical Button
• Height 0.65 Ø

• Application Strength – fast penetration

• Suited for all non-abrasive ground types

• Smaller contact area

• Best suited for smaller diameter bits


DTH Button bit face shape.jpgdrill bit carbide button shape.jpg

Factory and Workshop

 rock drill workshop and factory.jpg

Packaging & Shipping

All Items will be packed by PLYWOOD BOX for bulk order, or by Carton for small quantities.

Shipping Methods we will suggest BY SEA for more than 1CBM and BY AIR for less than 200kgs.

One piece for sample is available.


DTH hammer packing.jpg

Company Information

  Xiamen Bestlink Factory Co., Ltd  is  committed  to  provide  the  best  drilling  and  cutting machine,  tools and accessories products in marble and granite stone quarrying,  as well as in civil engineering application, especial demolition project. it is now a leading manufacturer of cutting and drilling equipment for the extraction of marble, granite  and ornamental stones in china.  
we offers a vast range of hydraulic and pneumatic drills and machines for diamond wire cutting as well as all kinds of accessories for quarrying activities.
With years of experience,our quality products are being exported to more than 45 countries all over the world including USA, and Europe with high reputation.

Our Services

 We have two main business field:

1) All Drilling and Quarrying equipments


2) Natural Stone Processing/Cutting/Splitting machines



Our products range:

1. Expansive mortar (non-explosive demolition agent, soundless cracking agent)

2. Hand-held rock drill Y6,Y20, Y24, and Y26 (pneumatic),TY24C

3. Fully hydraulic rock drill BH26, BH28 (with pushing cylinder)

4. Pneumatic rock drill with pushing air-leg YT18, Y19A,YT24, YT28

5. Internal combustion rock drill (hand held, gasoline) YN27

6. Line drilling machine

7. DTH driller, diamond wire saw

8. Button bits, cross bit, chisel bits

9.Plug hole rod, Extension rod, shank adapter,coupling sleeves

10. DTH hammers & bits,DHD, COP, IR, Bulroc and SD series

11. Diamond wire rope, hydro-bag (steel), air bag (polymer) for blocks pushing

12. Stone cutter for block cutting

13. Hydraulic splitting machine

14. Wedges & feathers 

15. Hose (for air, water, hydraulic...) 



The information you may like to know before order:


1. Methods of Payment:

  T/T (Telegraphic Transfer) or Western Union or L/C at sight


2. Handling time for an order

  Within 10 days supplied from stock


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 Sale Services:

  a. Our sales team will response for your question within 24 hours (Holidays Excluded)

  b. Technical Support will be available in any time

  c. Free replacement will provide once the failure confirmed caused by our product quality