12'' High Pressure DTH hammer for fundation,construction and borehole drilling ,305-445mm hole range

Application                                                                                                                                                         

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.

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

Characteristics                                                                                                                                                  

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.

Specification                                                                                                                                                     

HN1120 DTH Hammer
		Item Description		Weight	Parts No.
		1.Top Sub		70	HSD112001
		2.O-Ring of Top Sub		0.04	HSD112002
		3.Breakout Ring		0.8	HSD112003
		4.Check Valve		3	HSD112004
		5.Spring		0.1	HSD112005
		6.Compression Buffer		1	HSD112006
		7.Air Distributor		20	HSD112007
		8.Internal Cylinder		23	HSD112008
		9.Piston		125	HSD112009
		10.External Cylinder		170	HSD112010
		11.Guided Sleeve		16	HSD112011
		12.O-Ring of stop ring		0.04	HSD112012
		13.Stop Ring		4.5	HSD112013
		14.Breakout Ring		0.8	HSD112014
		15.Drive Chuck		48	HSD112015
		16.Drill Bit		120	HSD112016
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.
Technical Data
Length (Less bit)	Weight (Less bit)	External Diameter	Bit Shank	Hole Range	Connection Thread
1900mm	480.0kg	275mm	DHD1120	305-445mm	API 6-5/8''REG
Working Pressure	Impact rate at 0.5 Mpa	Recommended Rotation Speed		Air Consumption
1.0-2.5Mpa	16HZ	15-25r/min		1.0Mpa	1.8Mpa	2.4Mpa
				30m3/min	56m3/min	78m3/min

Packing& Delivery                                                                                                                                        ​

Service                                                                                                                                                             

In our after sales service system, We establish perfect control system strictly according to ISO-9000 series, in this system, technology date and problem solve solution and preventive measures will be provided in any maintain project, all the spare parts will be used in new OEM products with installation instructions, packing list, manufacturer's instruction, qualification and Warranty certificate.

We provide "one equipment & one case, endless service, namely the after sales service begin from the order confirmation, last for the working life of the equipment.

Purchase Process                                                                                                                                              ​