4inch RC drilling hammer,Reverse Circulation Drilling Hammer Down The Hole Drilling Tools

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

JRC4 RC Hammer
		Item Description		Weight	Parts No.
		1.Circlip of top sub		0.02	JRC4-01
		2.O-ring of adaptor screen		0.02	JRC4-02
		3.Adaptor screen		1.06	JRC4-03
		4.O-Ring of sample tube		0.02	JRC4-04
		5.Top Sub		7.79	JRC4-05
		6.Plunger		0.51	JRC4-06
		7.Y-ring of plunger		0.02	JRC4-07
		8.Spring Distributor nozzle		0.06	JRC4-08
		9.Sample Tube Upper Top sub		0.74	JRC4-09
		10.O-Ring of sample tube		0.02	JRC4-10
		11.O-Ring of sample tube		0.02	JRC4-11
		12.Sample tube		2.38	JRC4-12
		13.Compression buffer		0.17	JRC4-13
		14.Air distributor		1.75	JRC4-14
		15.O-ring of air distributor		0.02	JRC4-15
		16.Inner cylinder		2.45	JRC4-16
		17.Piston		10.45	JRC4-17
		18.Piston case		17.95	JRC4-18
		19.Bush drive sub		1.77	JRC4-19
		20.Bit retaining ring		0.29	JRC4-20
		21.O-ring of bit retaining ring		0.02	JRC4-21
		22.Shroud		1.05	JRC4-22
		23.Drive sub		3.13	JRC4-23
		23.RC drill bit		11.70	JRC4-24
Technical Data
Length (Less bit)	Weight (Less bit)	External Diameter	Bit Shank	Hole Range	Connection Thread
1252mm	52.0kg	107mm	JRC4	111-127mm	3.5/4''Remet 4''Metzke
Working Pressure	Impact rate at 0.5 Mpa	Recommended Rotation Speed		Air Consumption
1.5-3.5Mpa	30HZ	25-40r/min		1.7Mpa	2.4Mpa	3.0Mpa
				8m3/min	12m3/min	16m3/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.