High-Quality DHD350 High Air Pressure DTH Hammer Manufacturer, Factory

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High-Quality DHD350 High Air Pressure DTH Hammer Manufacturer, Factory

DHD350 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

DHD350 Quarry Mining High Air Pressure DTH Hammer

DHD SERIES DTH Hammers: DHD3.5, DHD340, DHD350, DHD360, DHD380

Design Highlights

⚙️

Valveless Technology
DHD series features a valveless design optimized for high performance even at low operating air pressures.

🛡️

Robust Bit Design
Suitable bits feature a strong design without foot valves to withstand heavy-duty applications.

⚡

Maximum Efficiency
Engineered to maximize energy output while significantly reducing routine service requirements.

🔥

Extreme Longevity
All critical internal components are heat-treated under strict control to maximize tool lifespan.

Main Applications

Mining & Quarrying
Road Construction
Drilling & Blasting
Water Well Drilling
Slope Protection
Anchoring

Product Specifications

Type	Model	Length (mm)	Weight (kg)	Ext. 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

DHD350 Technical Data

Parameters	Specifications
Hammer Length (without bit)	1209 mm
Top Sub Thread	API 2 3/8" REG PIN
Outside Diameter	125 mm
Weight	78.5 kg
Bit Diameter	135-155 mm
Working Pressure	10-25 Bar
Air Consumption	9-15 M3/min
Bit Shank	DHD350

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Frequently Asked Questions

❓ What is the primary advantage of the DHD350 valveless design?

The valveless design is specifically engineered for high performance at lower operating air pressures, which helps in maximizing energy output while reducing complex maintenance needs.

❓ What industries commonly use these DTH hammers?

These hammers are widely utilized in mining, quarrying, road construction, water well drilling, and civil engineering projects such as slope protection and anchoring.

❓ Does the DHD350 require a foot valve for its bits?

No, the bits designed for the DHD series have a robust structure that does not require a foot valve, making them more durable for heavy-duty drilling applications.

❓ How is the durability of the internal components ensured?

All critical internal components undergo strict heat treatment processes to ensure maximum hardness and longevity, protecting the tool during intense drilling operations.

❓ What is the recommended working pressure for the DHD350?

The DHD350 hammer operates efficiently within a working pressure range of 10 to 25 Bar, with air consumption between 9 and 15 M3/min.

❓ Are there other series available besides the DHD?

Yes, we provide a comprehensive range including High, Medium, and Low pressure series, as well as Reverse Circulation and High Efficiency series to meet various drilling requirements.