Hot Sale for Dth Hammer Shanks - Large diameter DTH drilling tools – Spark

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As for competitive charges, we believe that you will be searching far and wide for anything that can beat us. We will state with absolute certainty that for such excellent at such charges we have been the lowest around for Down The Hole Bit, Numa Shank Hammer, Numa Shank Hammer, Our products are new and old customers consistent recognition and trust. We welcome new and old customers to contact us for future business relations, common development. Let's speeding in the dark!

Hot Sale for Dth Hammer Shanks - 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

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)

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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Fast and great quotations, informed advisers to help you choose the correct product that suits all your preferences, a short creation time, responsible top quality control and different services for paying and shipping affairs for Hot Sale for Dth Hammer Shanks - Large diameter DTH drilling tools – Spark , The product will supply to all over the world, such as: Barbados, Vietnam, Roman, We have established long-term, stable and good business relationships with many manufacturers and wholesalers around the world. Currently, we are looking forward to even greater cooperation with overseas customers based on mutual benefits. Please feel free to contact us for more details.

Blast Hole Bit