New design dth oil rig drill bit\/ dth hammer bit\/dth drill bit dth hammer drill

Product Description

DTH hammer

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.

It also has the following advantages :

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 multihead thread connecting chuck and cylinder of hammer.

5. Interchangeable with DTH bit and drill pipe

DTH Bit

DTH bit is also our main product. After mang years search, we have rich experience in development and manufacturing high quality products, which adopted high-quality raw materials, advanced technology and passed through strictly inspection.

1.high and low air pressure down-the-hole drill bits
2.Low air pressure holeDia.:65-220mm

3.High air pressure hole Dia.:85-305mm

4.Face type:drop center/concave/convex/double gauge/flat

5.Our DTH Bit can be suitable for many types of DTH Hammer, such as XL, Mission, COP, IR, Mach, Demag, SD, Bulroc, Halco Mach, Digger etc.

------------------ Specifications of High Air Pressure DTH Hammers --------------------------------

High Air Pressure DTH Hammer ( with foot valve )

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

Advantages :

1.Valveless air distribution, more reliable;

2.Piston with simple but compact design, long life;

3.More efficient energy transfer, faster drilling speed, lower air consumption and lower oil consumption.

4.Fewer internal parts, simple structure, longer life, less failure and easier to maintain, with the all heat treated parts;

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

DTH hammer type		HD35	HD45	HSD4	HQL4
Length(less bit) mm		930mm	1030	1084	1097
Weight(less bit) kg		25kg	39	40.5	41
External diameter mm		82mm	99	99	99
Bit shank		DHD3.5	COP44 DHD340	SD4	QL40
Hole range(mm)		90-110	110-135	110-135	110-135
Connection thread		API 2 3 /8" Reg.	API 2 3/8"Reg	API 2 3/8"Reg	API 2 3/8"Reg
Working pressure		1.0-1.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa
Impact rate at 1.5-1.7Mpa		28Hz	27Hz	27Hz	27Hz
Recommended Rotation speed		25-40r/min	25-40r/min	25-40r/min	25-40r/min
Air consumption	1.0Mpa	4.5m 3 /min	6.0m 3 /min	6.0m 3 /min	6.0m 3 /min
	1.8Mpa	9.0m 3 /min	10.0m 3 /min	10.0m 3 /min	10.0m 3 /min
	2.4Mpa	/	15.0m 3 /min	15.0m 3 /min	15.0m 3 /min

DTH hammer type		HD55	HD55C	HSD5	HQL5
Length(less bit) mm		1214	1160	1175	1156
Weight(less bit) kg		76.5	72.5	72.5	73
External diameter mm		125	125	125	125
Bit shank		COP54 DHD350R	HD55C DHD350Q	SD5	QL50
Hole range(mm)		135-155	135-155	135-155	135-155
Connection thread		API 2 3/8"Reg	API 2 3/8"Reg	API 3 1/2"Reg	API 3 1/2"Reg
		API 3 1/2"Reg	API 3 1/2"Reg
Working pressure		1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa
Impact rate at 1.5-1.7Mpa		25Hz	25Hz	25Hz	25Hz
Recommended Rotation speed		20-35r/min	20-35r/min	20-35r/min	20-35r/min
Air consumption	1.0Mpa	9.0m3/min	9.0m3/min	9.0m3/min	9.0m3/min
	1.8Mpa	15.0m 3 /min	15.0m 3 /min	15.0m 3 /min	15.0m 3 /min
	2.4Mpa	23.0m 3 /min	23.0m 3 /min	23.0m 3 /min	23.0m 3 /min

DTH hammer type		HD65	HSD6	HQL6	HD85
Length(less bit) mm		1248	1261	1212	1492
Weight(less bit) kg		100	100	95	188
External diameter mm		142	142	146	180
Bit shank		COP64 DHD360	SD6	QL60	COP84 DHD380
Hole range(mm)		155-190	155-190	155-190	195-254
Connection thread		API 3 1/2"Reg	API 3 1/2"Reg	API 3 1/2"Reg	API 4 1/2"Reg
Working pressure		1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa
Impact rate at 1.5-1.7Mpa		23Hz	23Hz	23Hz	20Hz
Recommended Rotation speed		20-30r/min	20-30r/min	20-30r/min	20-30r/min
Air consumption	1.0Mpa	10.0m 3 /min	10.0m 3 /min	10.0m 3 /min	15.0m3/min
	1.8Mpa	20.0m 3 /min	20.0m 3 /min	20.0m 3 /min	26.0m 3 /min
	2.4Mpa	28.5m 3 /min	28.5m 3 /min	28.5m 3 /min	34.0m 3 /min

DTH hammer type		HSD8	HQL8	HSD10	HN100
Length(less bit) mm		1463	1465	1502	1510
Weight(less bit) kg		192	182	290	288
External diameter mm		180	180	226	226
Bit shank		SD8	QL80	SD10	NUMA100
Hole range(mm)		195-254	195-254	254-311	254-311
Connection thread		API 4 1/2"Reg	API 4 1/2"Reg	API 4 1/2"Reg	API 6 5/8"Reg
				API 6 5/8"Reg
Working pressure		1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa
Impact rate at 1.5-1.7Mpa		20Hz	20Hz	18Hz	18Hz
Recommended Rotation speed		15-25r/min	15-25r/min	15-25r/min	15-25r/min
Air consumption	1.0Mpa	15.0m 3 /min	15.0m 3 /min	22.0m 3 /min	22.0m 3 /min
	1.8Mpa	26.0m 3 /min	26.0m 3 /min	40.0m 3 /min	45.0m 3 /min
	2.4Mpa	34.0m 3 /min	34.0m 3 /min	55.0m 3 /min	60.0m 3 /min

DTH hammer type		HD1120	HSD12	HN120	NH125
Length(less bit) mm		1900	1880	1900	1900
Weight(less bit) kg		480	487	485	480
External diameter mm		275	275	275	275
Bit shank		DHD1120	SD12	NUMA120	NUMA125
Hole range(mm)		305-445	305-445	305-445	305-445
Connection thread		API 6 5/8"Reg	API 6 5/8"Reg	API 6 5/8"Reg	API 6 5/8"Reg
Working pressure		1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa
Impact rate at 1.5-1.7Mpa		16Hz	16Hz	16Hz	16Hz
Recommended Rotation speed		15-25r/min	15-25r/min	15-25r/min	15-25r/min
Air consumption	1.0Mpa	30.0m 3 /min	30.0m 3 /min	30.0m 3 /min	30.0m 3 /min
	1.8Mpa	56.0m 3 /min	56.0m 3 /min	56.0m 3 /min	56.0m 3 /min
	2.4Mpa	78.0m 3 /min	78.0m 3 /min	78.0m 3 /min	78.0m 3 /min

High Air Pressure DTH Hammer ( without foot valve )

It's a king of high air pressure DTH hammer without footvalve,our newest design. it's also one of the most advanced DTH hammer in the world.

It has the following advantages :

1.Out of the trouble of foot valve fracture and expansion and contraction;

2.Lower energy consumption and higher impact frequency. The drilling speed is 15-30% higher than the one with foot valve;

3.Simple structure, reliable parts, long life, easy and cheap maintenance;

4.Lower air and oil consumption, the oil consumption is about 10% lower than the one with foot valve.

According to your request, the top sub can be made into two spanners, an air controlling hole can be drilled on the check valve to provide more efficient cuttings discharge.

DTH hammer type		HD25A	HD35A	HD45A	HD45S
Length(less bit) mm		872	888	1011	986
Weight(less bit)  kg		16	25	43.2	37
External diameter  mm		71	82	99	92
Bit shank		HD25	IR3.5	COP44 DHD340	COP44 DHD340
Hole range(mm)		76-90	90-115	110-135	105-120
Connection thread		T42*10*1.5	API 2 3/8"Reg	API 2 3/8"Reg	API 2 3/8"Reg
Working pressure		1.0-1.5Mpa	1.0-1.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa
Impact rate at 1.5/1.7Mpa		25Hz	25Hz	30Hz	30Hz
Recommended Rotation speed		22-35r/min	25-40r/min	22-35r/min	25-40r/min
Air consumption	1.0Mpa	4.0m 3 /min	3.8m 3 /min	6.0m 3 /min	5.0m 3 /min
	1.5/1.8Mpa	6.0m 3 /min	7.5m 3 /min	10.0m 3 /min	8.0m 3 /min
	2.4Mpa	/	/	15.0m 3 /min	13.0m 3 /min

DTH hammer type		HSD4A	HM4A	HQL4A	HD55A
Length(less bit) mm		1012	1005	1070	1110
Weight(less bit) kg		40	40	40	69
External diameter mm		99	99	99	125
Bit shank		SD4	HM4	QL40	COP54 DHD350R
Hole range(mm)		110-135	110-135	110-135	135-155
Connection thread		API 2 3/8"Reg	API 2 3/8"Reg	API 2 3/8"Reg	API 2 3/8"Reg
					API 3 1/2"Reg
Working pressure		1.5-2.0Mpa	1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa
Impact rate at 1.5/1.7Mpa		30Hz	30Hz	30Hz	28Hz
Recommended Rotation speed		25-40r/min	25-40r/min	25-40r/min	20-35r/min
Air consumption	1.0Mpa	6.0m 3 /min	5.0m 3 /min	5.0m 3 /min	7.0m 3 /min
	1.5/1.8Mpa	9.0m 3 /min	9.0m 3 /min	9.0m 3 /min	14.0m 3 /min
	2.4Mpa	14.0m 3 /min	14.0m 3 /min	14.0m 3 /min	19.0m 3 /min

DTH hammer type		HD55S	HD55C(A)	HM5A	HSD5A
Length(less bit) mm		1110	1102	1110	1090
Weight(less bit) kg		66	68	68.5	70
External diameter mm		116	125	125	125
Bit shank		COP54 DHD350R	HD5C DHD350Q	HM5	SD5
Hole range(mm)		127-145	135-155	135-155	135-155
Connection thread		API 2 3/8"Reg	API 2 3/8"Reg	API 2 3/8"Reg	API 2 3/8"Reg
		API 3 1/2"Reg	API 3 1/2"Reg	API 3 1/2"Reg	API 3 1/2"Reg
Working pressure		1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa
Impact rate at 1.5/1.7Mpa		28Hz	28Hz	28Hz	28Hz
Recommended Rotation speed		20-35r/min	20-35r/min	20-35r/min	20-35r/min
Air consumption	1.0Mpa	7.0m 3 /min	8.0m 3 /min	7.0m 3 /min	7.0m 3 /min
	1.5/1.8Mpa	13.5m 3 /min	14.0m 3 /min	14.0m 3 /min	14.0m 3 /min
	2.4Mpa	18.0m 3 /min	19.0m 3 /min	19.0m 3 /min	19.0m 3 /min

DTH hammer type		HQL5A	HD65A	HM65A	HSD6A
Length(less bit) mm		1090	1238	1161	1182
Weight(less bit) kg		67	98	90	90
External diameter mm		125	142	146	146
Bit shank		QL50	COP64 DHD360	HM65A	SD6
Hole range(mm)		135-155	155-203	155-203	155-203
Connection thread		API 2 3/8"Reg	API 3 1/2"Reg	API 3 1/2"Reg	API 3 1/2"Reg
		API 3 1/2"Reg
Working pressure		1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa
Impact rate at 1.5/1.7Mpa		28Hz	25Hz	25Hz	25Hz
Recommended Rotation speed		20-35r/min	20-30r/min	20-30r/min	20-30r/min
Air consumption	1.0Mpa	7.0m 3 /min	9.0m 3 /min	9.0m 3 /min	9.0m 3 /min
	1.5/1.8Mpa	14.0m 3 /min	18.0m 3 /min	18.0m 3 /min	18.0m 3 /min
	2.4Mpa	19.0m 3 /min	26.0m 3 /min	26.0m 3 /min	26.0m 3 /min

DTH hammer type		HQL6A	HD75A	HD85A	HM8A
Length(less bit) mm		1183	1258	1359	1338
Weight(less bit) kg		92	120	175	176
External diameter mm		146	165	180	180
Bit shank		QL60	COP64 DHD360	COP84 DHD380	HM8A
Hole range(mm)		155-203	175-216	195-254	195-254
Connection thread		API 3 1/2"Reg	API 3 1/2"Reg	API 4 1/2"Reg	API 4 1/2"Reg
Working pressure		1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa
Impact rate at 1.5/1.7Mpa		25Hz	23Hz	22Hz	22Hz
Recommended Rotation speed		20-30r/min	20-30r/min	15-25r/min	15-25r/min
Air consumption	1.0Mpa	9.0m 3 /min	11.0m 3 /min	12.0m 3 /min	12.0m 3 /min
	1.5/1.8Mpa	18.0m 3 /min	20.0m 3 /min	22.0m 3 /min	22.0m 3 /min
	2.4Mpa	26.0m 3 /min	28.0m 3 /min	28.0m 3 /min	28.0m 3 /min

DTH hammer type		HSD8A	HQL8A	HQL95A	HSD10A
Length(less bit) mm		1330	1330	1340	1525
Weight(less bit) kg		174	171	203	316
External diameter mm		180	180	203	226
Bit shank		SD8	QL80	QL80	SD10
Hole range(mm)		195-254	195-254	216-254	254-311
Connection thread		API 4 1/2"Reg	API 4 1/2"Reg	API 4 1/2"Reg	API 6 5/8"Reg
Working pressure		1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa
Impact rate at 1.5/1.7Mpa		22Hz	22Hz	22Hz	20Hz
Recommended Rotation speed		15-25r/min	15-25r/min	15-25r/min	15-25r/min
Air consumption	1.0Mpa	12.0m 3 /min	12.0m 3 /min	16.0m 3 /min	22.0m 3 /min
	1.5/1.8Mpa	22.0m 3 /min	22.0m 3 /min	28.0m 3 /min	40.0m 3 /min
	2.4Mpa	28.0m 3 /min	28.0m 3 /min	39.0m 3 /min	65.0m 3 /min

DTH hammer type		HN100A	HD1120A	HSD12A	HN120A	HN125A
Length(less bit) mm		1545	1880	1860	1880	1880
Weight(less bit) kg		305	474	480	475	470
External diameter mm		226	275	275	275	275
Bit shank		NUMA100	DHD1120	SD12	NUMA120	NUMA125
Hole range(mm)		254-311	305-445	305-445	305-445	305-445
Connection thread		API 6 5/8"Reg	API 6 5/8"Reg	API 6 5/8"Reg	API 6 5/8"Reg	API 6 5/8"Reg
Working pressure		1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa
Impact rate at 1.5/1.7Mpa		20Hz	20Hz	20Hz	20Hz	20Hz
Recommended Rotation speed		15-25r/min	15-25r/min	15-25r/min	15-25r/min	15-25r/min
Air consumption	1.0Mpa	22.0m 3 /min	28.0m 3 /min	28.0m 3 /min	28.0m 3 /min	28.0m 3 /min
	1.5/1.8Mpa	40.0m 3 /min	50.0m 3 /min	50.0m 3 /min	50.0m 3 /min	50.0m 3 /min
	2.4Mpa	65.0m 3 /min	71.0m 3 /min	71.0m 3 /min	71.0m 3 /min	71.0m 3 /min

--------------------------------- Selection of DTH BIT FACE SHAPE AND CARBIDE BUTTON SHAPE --------------------

A: Bit face shape selection

DropCenter Bit
For high penetration rates in soft to medium-hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control.
Concave face
The all-round application bit face specifically for medium hard and homogenerous rock formations. Good hole deviation control and good flushing capacity.
Convex face
For high penetration rates in soft to medium-hard with low to medium air pressures. It is the most resistance to steel wash, and may reduce the load and wear on the gauge buttons, but poor hole deviation control.
Double Gauge face
This kind of face shape is suitable for fast penetration rates in medium to hard rock formations. Designed for high air pressures and good resistance to steel wash step gauge bit.
Flat Face Bit
This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressures. Good penetration rates an resistance to steel wash.

B: Insert Carbide Button Shape Selection

Matching the insert to the job requirements is essential in achieving the desired results.  Different buttons is ideal for different ground conditions, abrasion levels, PSIs and penetration levels.  In general, the larger the number of gauge buttons the better overall performance, especially in hard rock.

Hemispherical
Height 0.5 Ø

Application Strength - multipurpose

Best suited to hard ground

25,000 to 45,000 PSI (170 to 300 MPa)

Abrasive to very abrasive
Ballistic Button
Height 0.75 Ø

Application Strength - fast penetration

Best suited to soft ground

10,000 to 20,000 PSI (70 to 140 MPa)

Non abrasive ground
Parabolic Button (semi ballistic)
Height 0.6 Ø

Application Strength - fast penetration

Best suited to medium ground

15,000 to 25,000 PSI (100 to 170 MPa)

Mildly abrasive ground
Conical Button
Height 0.65 Ø

Application Strength fast penetration

Suited for all non-abrasive ground types

Smaller contact area

Best suited for smaller diameter bits

Factory and Workshop

Packaging & Shipping

All Items will be packed by PLYWOOD BOX for bulk order, or by Carton for small quantities.

Shipping Methods we will suggest BY SEA for more than 1CBM and BY AIR for less than 200kgs.

One piece for sample is available.