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DTH Hammer (Middle/Low Pressure)

DTH Hammer (Middle/Low Pressure)

Feature
1. This middle and low pressure DTH hammer can effectively breaking rocks into rock powder and then remove them from the hole end, thus avoiding repeated breaking for rocks during hole-making process. Hence, it can effectively reduce abrasion to drill bits and helps improve hole making efficiency.
2. The inner structure of the DTH hammer is designed based on the most current rock-drilling theories, which allows the drilling tool to have optimum energy transfer and offer powerful hammering force. This ensures fast rock drilling speed and low air consumption.
3. Superior quality raw materials and latest production techniques make sure the down-the-hole hammer have reliable performance and long service life. Meanwhile, the tool is easy for mounting and dismounting and is convenient for maintenance.

Technical Specifications of Medium and Low Pressure DTH Hammer

Model	QCW-54	QCW-70	QCW-80	QCW-100	QCF-110	QCW-130
Diameter(mm)	68~70	80~85	90~110	110-150	110-150	150-175
Length(mm)	745	872	865	869	869	932
External diameter(mm)	61.2	67	80	104	124	136
Weight(Kg)	13	16	22	36	36	64
Working pressure(MPa)	0.5~0.7	0.5~0.7	0.5~0.7	0.5~1.2	0.5~1.2	0.5~1.2
Air consumption (m³/min)	5.5	5.5	6	8	8	8~11
Impact torque(NM)	85	80	140	200	200	250
Impact frequency(NM)	14 Hz	15 Hz	15 Hz	14 Hz	14 Hz	14 Hz
Rod connection thread	PIN M42101.5	PIN M42101.5	73 Drill Rod BOX	BOX API 2-3/8"	BOX API 2-3/8"	BOX API 2-3/8"
Available Button Bit	65; 66.5;	76; 80;	90; 100;	110; 115; 120; 130; 140; 145;	110; 115; 120; 130; 140; 145;	150; 165;

Model	QCF-150	QCW-150	QCF-170	QCF-200	QCF-250	QCW-350
Diameter(mm)	150-165	152-185	130~152	152~305	203~350	350-500
Length(mm)	912	908	1023	1249	1420	1810
External diameter(mm)	136	137	156	188	220	290
Weight(Kg)	81	75	95	162	208	492
Working pressure(MPa)	0.5~0.7	0.5~0.7	0.5~0.7	0.5~0.7	0.5~0.7	0.5~0.7
Air consumption(m³/min)	15	17	18	24	30	30
Impact torque(NM)	340	340	420	500	560	1250
Impact frequency(Nz)	15 Hz	14 Hz	14 Hz	15 Hz	16 Hz	17 Hz
Rod connection thread	BOX M75102.5	BOX M76103	PIN M1002810	PIN M120408	PIN API 3-1/2"	PIN API 3-1/2"
Available Button Bit	150; 160; 165;	150; 165; 175; 185;	175; 185; 195; 200; 210; 220; 230; 240; 250	205; 210; 230; 240;	255; 265; 300;	350; 400; 450; 500;

Jinfan is a professional drilling rig manufacturer in China. We primary provide engineering crawler drilling rig, underground drilling rig, water well drilling rigs and jet-grouting drilling rigs. In addition, we also offer a wide range of drilling tools and drilling accessories, such as DTH hammer(middle/low pressure), pipe hammer machine, and wireline core barrel, etc.

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