Cheap PriceList for Coal Drill Bit - Large diameter DTH drilling tools – Spark

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The really abundant projects administration experiences and just one to one particular provider model make the substantial importance of organization communication and our easy understanding of your expectations for Hydraulic Dth Hammer, Large Diameter Masonry Drill Bits, 3 Inch Rock Drill Bit, Our company quickly grew in size and reputation because of its absolute dedication to high quality manufacturing, high value of products and excellent customer service.
Cheap PriceList for Coal Drill Bit - Large diameter DTH drilling tools – Spark Detail:

Large diameter  drilling tools (1)

Advantages

1.Using DTH hammer drilling is a good way to drill through cave formation and avoid stuck problem.

2.When encountering caves, drill bit inclines to the cave. You can add a stabilizer to ensure the hole straightness.

Large diameter DTH hammer

Large diameter  drilling tools (2)

We can supply large diameter DTH hammers and bits with different shanks:

12”: DHD112, SD12, NUMA120, NUMA125

14”: NUMA125

18”: NUMA180

24”: NUMA240

12” NUMA120 HAMMER


Large diameter  drilling tools (3)

PRODUCT NAME

NUMA120 HAMMER

BIT SHANK

NUMA120 WITH FOOT VALVE

CONNECTION THREAD

API 6 5/8 REG

MAX. WORKING PRESSURE

30 BAR

AIR CONSUMPTION

70m³/min (18BAR)

RECOMMEND ROTATION SPEED

15-40 r/min

OUTER DIAMETER

275MM

REC HOLE SIZE

305-350MM

LENGTH WITHOUT BIT

1698.5MM

WEIGHT

550KG

ITEM DESCRIPTION

NO PART LIST
1 TOP SUB (can insert carbides)
2 TOP SUB RING
3 CHECK VALVE
4 SPRING
5 SHOCK RING
6 CHECK VALVE GUIDE
7 AIR DISTRIBUTOR GUIDE
8 PRESSURE BEARING RING
9 AIR DISTRIBUTOR TUBE
10 PISTON
11 OUTER CYLINDER
12 BUSH DRIVE SUB
13 O RING
14 BIT RETAINING RING
15 STEEL RING
16 CHUCK SLEEVE

 

24” NUMA240 HAMMER

Large diameter  drilling tools (4)

PRODUCT NAME

NUMA240 HAMMER

BIT SHANK

NUMA240 WITH FOOT VALVE

CONNECTION THREAD

HEX

MAX. WORKING PRESSURE

30 BAR

AIR CONSUMPTION

130m³/min (18BAR)

RECOMMEND ROTATION SPEED

15-25 r/min

OUTER DIAMETER

525MM

REC HOLE SIZE

500-1000MM

LENGTH WITHOUT BIT

2543.5MM

WEIGHT

2598KG

 

ITEM DESCRIPTION

NO PART LIST
1 TOP SUB (can insert carbides)
2 TOP SUB RING
3 STEEL RING
4 CHECK VALVE  
5 SPRING 
6 SHOCK RING 
7 CHECK VALVE GUIDE
8 O RING
9 AIR DISTRIBUTOR GUIDE
10 PRESSURE BEARING RING
11 O RING
12 AIR DISTRIBUTOR TUBE
13 PISTON  
14 OUTER CYLINDER
15 BIT RETAINING RING
16 STEEL RING
17 CHUCK SLEEVE

Large diameter DTH bit

The large diameter bits are mainly used in three applications: embedded prefabrication pile, long spiral pile and large diameter end bearing pile. 

Large diameter  drilling tools (5)
Large diameter  drilling tools (6)

The bit face mainly used concave face. The advantage of these face can ensure the straightness of the hole.

Specification

Bit shank DHD112, SD12, NUMA120
Recommend hole size 305-350mm (standard)
Max. hole size 580mm (oversized)
Bit face convex, drop center
Material alloy steel
Button type spherical, ballistic, semi-ballistic
Button grade YK05, KD10
Button installation method cold pressing
Bit shank Numa180
Recommend hole size 500-650mm (standard)
Max. hole size 770mm (oversized)
Bit face convex, drop center
Material alloy steel
Button type spherical, ballistic, semi-ballistic
Button grade YK05, KD10
Button installation method cold pressing
Bit shank Numa240
Recommend hole size 650-800mm (standard)
Max. hole size 1000mm (oversized)
Bit face convex, drop center
Material alloy steel
Button type spherical, ballistic, semi-ballistic
Button grade YK05, KD10
Button installation method cold pressing

Large diameter  drilling tools (7)


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  • It is a very good, very rare business partners, looking forward to the next more perfect cooperation!
    5 Stars By Rigoberto Boler from Barcelona - 2017.12.02 14:11
    It's really lucky to find such a professional and responsible manufacturer, the product quality is good and delivery is timely, very nice.
    5 Stars By Belinda from Tunisia - 2018.12.14 15:26
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