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Contact: Dr.Robert Roschen

Tel: +86-21-54994419

Mobile: +8613764195009

Whatsapp: +8613764195009

Email: roschen@roschen.com

Web: www.roscenmining.com

COP DTH Hammer

COP DTH Hammer Hammers Selecting the right hammer The optimum range of hole size for blast hole drilling with DTH is 90 mm to 254 mm (3 ½"–10"). Smaller blast holes are generally drilled using top hammer, and larger holes generally use rotary machines. In other applications, like...

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COP DTH Hammer

Hammers

Selecting the right hammer

The optimum range of hole size for blast hole drilling with DTH is 90 mm to 254 mm (3 ½"–10"). Smaller blast holes are generally drilled using top hammer, and larger holes generally use rotary machines. 

In other applications, like foundation drilling, DTH hammers can be used with single bit in hole sizes up to 914 mm (36"). With multiple hammer units CD (Cluster Drills) drill holes up to 70" or 1778 mm as standard.

Larger cluster drills can be delivered as per customer request.

As a rule of thumb, the smallest hole diameter a DTH hammer can drill is its nominal size. A 4 inch hammer will drill a 4 inch (102 mm) hole. The limiting factor is the outside diameter of the hammer, because, as hole diameter reduces, airflow is restricted. Maximum hole size for production drilling is the nominal hammer size plus 1 inch, so for a 4 inch hammer the maximum hole size is 5 inch (127–130 mm).   

Choosing the right hammer is largely determined by hole size and type of rock formation. Ideally, the size of the hammer should match the required hole dimension as closely as possible, leaving just enough space for cuttings to evacuate the hole.

Roschen ROS hammers are purpose-matched for all rock types and applications. Where high performance is the main criterion, Roschen ROS Gold hammers are recommended in blast hole drilling and Roschen ROS hammers in deep hole drilling applications. The ROS hammer has proven superior performance and adaptability to different air requirements thanks to the Air Select System. 

Where proven technology is required, the Roschen ROS and ROS hammers are known for their reliability and longevity. They are practically bullet proof, making them useful for production drilling in quarries, shallow water well drilling, and underground blast hole drilling.

ROS is similar to Standard, but with heavy duty chuck and wear sleeve, and a top sub fitted with tungsten carbide buttons for wear protection in harsh and abrasive conditions. These also protect the top sub from excessive wear when rotating out of the hole through broken Rock.


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.                     

Choosing the right hammer is largely determined by the hole size and type of rock formation.

Ideally, the size of the hammer should match the required hole dimension as closely as possible, leaving just enough space for cuttings to evacuate the hole.

Roschen offers a wide range of quality, versatile DTH hammers from a number of leading industry manufacturers. Hammers are available for down hole and blast hole applications and use in nearly all ground conditions. HDD and reverse circulation hammers are available. Please refer to the HDD or reverse circulation sections of this catalogue or contact your Roschen representative for details.  

Most DTH hammers are designed for use with the industry's most common bit shank types. This allows for the use of one bit on multiple hammers.

In addition to our complete range of DTH hammers, we offers a comprehensive line of hammer replacement and spare parts. Assembly drawings for all hammers are available on request.

Please contact your Roschen representative for product specific information and DTH hammer ordering assistance.  

ROSCHEN DTH Hammers Specifications

Hammer Size

Bit Shank

ROSCHEN Code

Connection Thread

Suitable bit

Working pressure

Air consumption

2"

BR2

ROS 11                 ROS 22

RD50 box

¢70-¢90mm

0.7-1.75Mpa

0.7Mpa

4.5m3/min

1.0Mpa

4m3/min

1.4Mpa

5m3/min

3"

DHD3.5

ROS 32

API 2 3/8" Reg

¢90-¢110mm

1.0-1.5Mpa

1.0Mpa

4.5m3/min

COP32/COP34

M30

1.5Mpa

9m3/min

4"

DHD340

ROS 34

API 2 3/8" Reg

¢110-¢135mm

1.0-2.5Mpa

1.0Mpa

6m3/min

COP44

QL40

SD4

1.8Mpa

10m3/min

M40

2.4Mpa

15m3/min

5"

DHD350

ROS 52               ROS 54

API 2 3/8"Reg/API 3 1/2" Reg

¢135-¢155mm

1.0-2.5Mpa

1.0Mpa

9m3/min

COP54

QL50

SD5

1.8Mpa

15m3/min

M50

2.4Mpa

23m3/min

6"

DHD360

ROS 62              ROS 64

API 3 1/2" Reg

¢155-¢190mm

1.0-2.5Mpa

1.0Mpa

10m3/min

COP64

QL60

SD6

1.8Mpa

20m3/min

M60

2.4Mpa

28.5m3/min

8"

DHD380

ROS 82              ROS 84

API 4 1/2" Reg

¢195-¢254mm

1.0-2.5Mpa

1.0Mpa

15m3/min

COP84

QL80

1.8Mpa

26m3/min

SD8

2.4Mpa

34m3/min

10"

SD10

ROS 100

API 6 5/8" Reg

¢254-¢311mm

1.0-2.5Mpa

1.0Mpa

22m3/min

Numa100

1.8Mpa

40m3/min

ROS 100

2.4Mpa

55m3/min

12"

DHD1120

ROS 120

API 6 5/8" Reg

¢305-¢445mm

1.0-2.5Mpa

1.0Mpa

30m3/min

SD12

1.8Mpa

56m3/min

Numa120

2.4Mpa

78m3/min

Notes: Metzke, Remet thread is available!

FAQ

1. Methods of Payment:

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

2. Handling time for an order

Only 2 or 3 days if we have stock on your request size.

Based on order quantity, normally it takes 25 days for production.

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

6.How can we trust your company?

We support Alibaba trade insurance. Protecting products quality, shipment on time and your covered amount.

Any other questions,please feel free to contact with me online or by phone.


ROSCHEN GROUP is professional in manufacturing and supplying quality cop dth hammer as one of the leading manufacturers and suppliers in China. We now bring you high quality cop dth hammer for sale, competitive in its excellent performance and high precision. Please rest assured to buy.
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