High Pressure Rock Drilling DTH Hammer DHD350 Hammer , Downhole Hammer with Foot Valve

High Pressure Rock Drilling DTH Hammer , Downhole Hammer with Foot Valve

High Pressure Rock Drilling DTH Hammer DHD350 hammer, Downhole Hammer with Foot Valve

 

High Pressure Rock Drilling DTH Hammer , Downhole Hammer with Foot Valve

5 inch COP54 , DHD350R Shank High pressure rock drilling DTH hammer with foot valve

Drill bits

Selecting the right bit
 

Roschen has a comprehensive range of DTH drill bits to match all conceivable applications.

Each bit is made from quality alloy steel, and has been precision machined to produce a perfect body, heat treated to the required hardness, given surface compression for fatigue resistance, and fitted with precision buttons manufactured in-house. 
 

Five basic designs are available: Convex, Flat front, Speed Bit, Concave, and Rocket bit. These are designed for specific applications for all rock types, hardness's and conditions Bit life and rate of penetration are the most important criteria in selecting the right bit for a particular application.

In most cases, the focus is on productivity, so the fast cuttings removal features of the SpeedBit and Convex/Ballistic designs are preferable, to ensure the buttons are cutting clean, with the minimum of recrushing.
 

In hard and abrasive formations, however, the flat front design offers best bit life, having strong gauge rows with large spherical buttons which are easy to regrind and maintain. The Speed Bit offers improved productivity with the same gauge as the Flat front, but with ballistic buttons in the front for faster penetration. An alternative is the Concave design with spherical buttons.
 

The Rocket bit can be dressed with ballistic buttons for use in soft to medium hard formations where fractured rock can be expected, or can be supplied with spherical buttons for hard and abrasive formations.
Bits are manufactured to match all diameters of Secoroc hammers.
 

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

The rock hammer has the fellow advantages:

1: Valveless air distribution. more reliable.
2. The rock impacter are simple design of the piston, long life.
3. More efficient energy transfter,faster drilling speed, lower air consumption and lower oil consumption.
4. Fewer internal parts, simple structure, long life, less failure and easier to maintain because all the parts are heat treated.

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

Hammer shank available:

1. BR shank series: BR1, BR2, BR3;
2. Cop shank series: Cop32, Cop34, Cop44, Cop54, Cop64, Cop84;
3. DHD shank series: DHD3.5, DHD340,DHD350, DHD360, DHD380;
4. SD shank series: SD4, SD5, SD6, SD8, SD10, SD12, SD15, SD18;
5. Mission shank series: Mission40, Mission50, Mission 60, Mission 80;
6. QL shank series: QL30, QL40, QL50, QL60, QL80;
7. NUMA shank series: NUMA120, NUMA125, NUMA180, NUMA240;

Other hammer shanks can be available according to customer's drawing or samples.

Technical Parameters of High air pressure DTH hammer with foot valve

According to customer's requirement, the top sub can be made into two spanners, and put protection buttons, An air controllinghole can be drilled on the check valve to provide more efficient cuttings discharge. 

Any more technical question of this DTH Hammer&Bits please feel free contact with our DTH drilling Tools department. 
 

FAQ

The information about dth drill bit 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
Based on order quantity, normally it takes 20 days for production.
in 3 working days after receiving the advance payment

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:
a. Our sales team will response for your question within 24 hours (Holidays Excluded)
b. Technical Support will be available in any time

6. Quality & Service:
A. There will be strict inspection and testing for every order before shipping out.
B. Our sales team and Technical Support will response for your question within 24 hours through skype: ROSCHEN.TOOL and WhatsApp/Wechat: +86-13764195009
C. Free replacement will provide once the failure confirmed caused or our product quality.

For more information please contact:

ROSCHEN INC.
ROSCHEN GROUP LIMITED
ROSCHEN HOLDINGS LIMITED
 

Skype: ROSCHEN.TOOL , ROSCHEN_GROUP
 

WeChat: +86-137 6419 5009 ; +86-135 8585 5390
 

WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390
 

Email: roschen@roschen.com ; roschen@roschen.net

Website: http://www.roschen.com ; http://www.roschen.net
http://www.roschen.cn ; http://www.roschendrill.com
http://www.roschenmining.com ; http://www.roschendrilling.com
http://www.roschengroup.com