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DTH380 1550mm Low Air Pressure / High Air Pressure DTH Hammers and Bits

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Brand Name :	MIROC
Model Number :	DTH380, length 1550mm, thread API 4 1/2"
Certification :	API
Price :	USD 50-1600 pieces
Payment Terms :	L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability :	8000 pieces per month
Delivery Time :	1-15 days

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DTH380 1550mm Low Air Pressure / High Air Pressure DTH Hammers and Bits

DTH380 1550mm Low Air Pressure / High Air Pressure DTH Hammers and Bits

In DTH drilling, the rock drilling bit is a continuation of the shank, which the rock drill piston strikes directly. Since the piston is in direct contact with the drill bit, little energy is lost. This gives DTH drilling a nearly constant penetration rate regardless of hole length.

DTH bits are paired with their corresponding hammers (by drilling hole diameter and spline configuration). Customers can customize their DTH bits in various ways, such as changing the tungsten carbide insert profile (spherical, ballistic, etc.), face profile (flat face, concave, convex, etc.), and flushing holes.

• Medium to large size drilling diameters
• Works in high pressure range, capable of drilling deep hole lengths

Competitive Advantage

• High grade tungsten carbide inserts
• Bit bodies manufactured from high grade steel and processed using state-of-the-art CNC machinery and heat treatment

Applications of DTH Bit

• Underground mining
• Tunneling

• Quarry benching operations

Specification of DTH Bits

Low Air Pressure DTH Bits
	Type	Diameter(mm)	Buttons		Flushing Holes
	Type	Diameter(mm)	*Front(Nomm)**	*Gauge(No.mm)**	Flushing Holes
1	CIR80	80	212, 212	6*13	2
2	CIR90	90	4*12	6*14	3
3		93	4*12	6*14	3
4		95	4*12	6*14	3
3" High Pressure DTH Bits
	Type	Diameter(mm)	Buttons		Flushing Holes
	Type	Diameter(mm)	*Front(Nomm)**	*Gauge(No.mm)**	Flushing Holes
1	DHD3.5 / M30	90	412, 212	8*12	2
2		95	412, 212	8*12	2
3		100	413, 213	8*13	2
4		105	414, 214	8*14	2
4" High Pressure DTH Bits
	Type	Diameter(mm)	Buttons		Flushing Holes
	Type	Diameter(mm)	*Front(Nomm)**	*Gauge(No.mm)**	Flushing Holes
1	DHD340 / SD4 / QL40 / M40	110	414, 214	8*14	2
2		115	414, 214	8*14	2
3		121	414, 214	8*14	2
4		127	414, 314	8*14	2
5		130	414, 314	8*16	2
6		133	414, 314	8*16	2
5" High Pressure DTH Bits
	Type	Diameter(mm)	Buttons		Flushing Holes
	Type	Diameter(mm)	*Front(Nomm)**	*Gauge(No.mm)**	Flushing Holes
1	DHD350 / SD5 / QL50 / M50	130	314, 414	9*16	2
2		133	314, 414	9*16	2
3		140	316, 416	9*16	3
4		146	316, 416	9*16	3
5		152	316, 516	9*18	3
6" High Pressure DTH Bits
	Type	Diameter(mm)	Buttons		Flushing Holes
	Type	Diameter(mm)	*Front(Nomm)**	*Gauge(No.mm)**	Flushing Holes
1	DHD360 / SD6 / QL60 / M60	152	416, 416	8*18	2
2		155	416, 416	8*18	2
3		159	416, 416	8*18	2
4		165	416, 416	8*18	2
5		172	418, 418	8*18	2
6		178	418, 418	8*18	2
7		190	318, 518	9*18	3
8		203	318, 618	9*18	3
8" High Pressure DTH Bits
	Type	Diameter(mm)	Buttons		Flushing Holes
	Type	Diameter(mm)	*Front(Nomm)**	*Gauge(No.mm)**	Flushing Holes
1	DHD380 / SD8 / QL80 / M80	200	618, 618	9*18	3
2		203	618, 618	9*18	3
3		216	618, 618	9*18	3
4		219	618, 618	9*18	3
5		222	618, 918	9*18	3
6		226	318, 518	1218, 618	3
7		229	318, 518	1218, 618	3
8		241	318, 518	1218, 618	3
9		251	318, 618	1218, 618	3
10		254	318, 718	1218, 618	3
11		270	318, 818	1218, 618	3
12		305	618, 818	1218, 918	3

Technical Manual of DTH Hammer

Low Pressure DTH Hammer	Model	Drilling Diameter (mm)	Hammer Length (mm)	External Diameter (mm)	Working Pressure (Mpa)	Air Consumption (m3/min)	Torque (N.m)	Impact Frequency (n/min)
1	DTH65B	ø68 - 70	745	ø61.2	0.5 - 0.7	2.5	51	≥810
2	DTH70	ø72 - 74	803	ø67.2	0.5 - 0.7	3	70	≥810
3	DTH76	ø74 - 76	766	ø67.2	0.5 - 0.7	3	75	≥810
4	DTH80	ø80 - 82	796	ø72	0.5 - 0.7	5	81	≥800
5	DTH80-II	ø75 - 80	756	ø67	0.5 - 0.7	3	75	≥810
6	DTH80X	ø80 - 82	756	ø72	0.5 - 0.7	4.5	75	≥800
7	DTH80XD	ø80 - 90	735	ø74	0.5 - 0.7	5.5	85	≥800
8	DTH90	ø90 - 130	796	ø80.2	0.5 - 0.7	6	110	≥820
9	DTH90-I	ø90 - 130	796	ø80	0.5 - 0.7	5.5	120	≥820
10	DTH110	ø110 - 150	838	ø98	0.5 - 0.7	11	180	≥830
11	DTH150	ø150 - 185	908	ø137	0.5 - 0.7	17	340	≥800
12	DTH170	ø170 - 250	1023	ø156	0.5 - 0.7	19.5	420	≥790
High Pressure DTH Hammer	Model	Drilling Diameter (mm)	Hammer Length (mm)	External Diameter (mm)	Working Pressure (Mpa)	Air Consumption (m3/min)	Torque (N.m)	Impact Frequency (n/min)
1	DTH330	ø82 - 85	867	ø71	0.8 - 2.1	3 - 12	150	≥800
2	DTH335	ø90 - 93	908	ø81	0.8 - 2.1	4.3 - 14.2	205	950 - 1500
3	DTH340	ø105 - 130	1052	ø92	0.8 - 2.1	3.5 - 18	304	≥800
4	DTH345	ø105 - 130	1034	ø98	0.8 - 2.1	3.5 - 15	335	≥800
5	DTH345K	ø110 - 130	994	ø98	0.8 - 2.1	3.5 - 15	400	≥820
6	DTH350	ø130 - 152	1387	ø114	0.8 - 2.1	5.7 - 18	590	810 - 1470
7	DTH355	ø130 - 152	1220	ø124	0.8 - 2.1	6.5 - 18	700	810 - 1500
8	DTH355K	ø130 - 152	1098	ø124	0.8 - 2.1	4.5 - 18	800	840 - 1500
9	DTH360	ø152 - 305	1450	ø136	0.8 - 2.1	8.5 - 25	822	820 - 1475
10	DTH380	ø203 - 350	1551	ø181	0.8 - 2.1	12 - 31	1560	860 - 1510
11	DTH3120	ø302 - 508	1934	ø275	0.8 - 2.1	14 - 45	2410	980 - 1446

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DTH380 1550mm Low Air Pressure / High Air Pressure DTH Hammers and Bits

DTH380 1550mm Low Air Pressure / High Air Pressure DTH Hammers and Bits

DTH380 1550mm Low Air Pressure / High Air Pressure DTH Hammers and Bits

down hole hammer

down the hole hammer

DTH380 1550mm Low Air Pressure / High Air Pressure DTH Hammers and Bits

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