China QL50 High Air Pressure DTH Hammer Manufacturers, Factories

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China QL50 High Air Pressure DTH Hammer Manufacturers, Factories

QL50 High Air Pressure DTH Hammer

BR1/BR2/BR3

DHD3.5/DHD340/DHD350/DHD360/DHD380

QL40/QL50/QL60/QL80

MISSION40/MISSION50/MISSION60/MISSION80

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Product Description

QL50 Quarry Mining High Air Pressure DTH Hammer

QL SERIES DTH Hammers: QL40 / QL50 / QL60 / QL80

DESIGN HIGHLIGHTS

1. DHD/QL/MISSION series is a valve less type hammer designed for high performance at low operating air pressure.

2. Suitable bits have a strong robust design without foot valve to withstand heavy duty applications.

3. DHD/QL/MISSION series hammers maximize energy output and reduce service requirements.

4. Wear sleeve is not reversible.

5. All critical internal components are heat treated under strict control to maximize tool longevity.

APPLICATIONS

Widely used for mine, quarry, road construction for drilling and blasting work, water well drilling, slope protection, anchoring, etc.

DTH hammers series we supply: High pressure, Medium pressure, Low pressure, High efficiency high pressure, and Reverse circulation series.

Type	Model	Length (mm)	Weight (kg)	External Dia. (mm)	Hole Range (mm)
3.5 inch	DHD3.5	930	25	Φ82	Φ90-110
4 inch	DHD340	1030	39	Φ99	Φ110-135
	SD4	1084	40.5	Φ99
	QL4	1097	41	Φ99
	Mission40	1005	40	Φ99
5 inch	DHD350	1214	76.5	Φ125	Φ135-155
	SD5	1175	72.5	Φ125
	QL5	1147	73	Φ125
	Mission50	1110	68.5	Φ125
6 inch	DHD360	1248	100	Φ142	Φ155-190
	SD6	1261	100	Φ142
	QL6	1212	95	Φ146
	Mission60	1161	90	Φ146
8 inch	D85	1492	188	Φ180	Φ195-254
	SD8	1463	192	Φ180
	QL8	1465	182	Φ180
	Mission80	1338	176	Φ180
10 inch	SD10	1502	290	Φ226	Φ254-311
10 inch	NUMA100	1510	288	Φ226	Φ254-311

QL50 DTH Hammers Specifications

Hammer Length without bit:	1154 (mm)
Top sub thread:	API 2 3/8" REG PIN
Outside diameter:	126 (mm)
Weight:	73.5 (KG)
Bit diameter:	135-155 (mm)
Working Pressure:	10-25 (Bar)
Air consumption:	9-15 (M3/min)
Bit shank:	QL50

Frequently Asked Questions (FAQ)

1. What is the main advantage of the valve-less design in QL series hammers?

The valve-less design is engineered for high performance even at low operating air pressures, maximizing energy output while reducing service requirements.

2. What hole diameter range is the QL50 DTH hammer suitable for?

The QL50 DTH hammer is specifically designed for a hole diameter range between 135mm and 155mm.

3. What are the air consumption requirements for the QL50?

The QL50 hammer typically consumes between 9 to 15 cubic meters of air per minute (M3/min) depending on the working pressure.

4. Are the internal components of the DTH hammer durable?

Yes, all critical internal components undergo strict heat treatment processes to maximize the tool's longevity and withstand heavy-duty applications.

5. Which industries commonly use these DTH hammers?

These tools are widely utilized in mining, quarrying, road construction for blasting, water well drilling, and anchoring projects.

6. What is the standard top sub thread for the QL50 model?

The standard top sub thread for the QL50 model is the API 2 3/8" REG PIN.