DHD3.5 DHD340 DHD350 High Air Pressure DTH Hammer

• After-sales Service: Online Support
• Warranty: 6 Months
• Color: as You Request
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: DHD QL SD
• Usage: for DTH Driller
• Material: High Manganese Steel
• Type: Drilling Machine
• Mining Object: Coal Machinery
• Transport Package: Pallet
• Specification: CE
• Trademark: Bestlink
• Origin: China
• HS Code: 82071990
• Production Capacity: 5000000PCS Per Year
• Package Size: 150.00cm * 30.00cm * 30.00cm
• Package Gross Weight: 80.000kg

Product Description

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		DHD3.5	DHD340	SD4	QL40
Length(less bit) mm		930mm	1030	1084	1097
Weight(less bit) kg		25kg	39	40.5	41
External diameter mm		Φ82mm	Φ99	Φ99	Φ99
Bit shank		DHD3.5	COP44 DHD340	SD4	QL40
Hole range(mm)		Φ90-110	Φ110-135	Φ110-135	Φ110-135
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		DHD350R	DHD350Q	SD5	QL50
Length(less bit) mm		1214	1160	1175	1156
Weight(less bit) kg		76.5	72.5	72.5	73
External diameter mm		Φ125	Φ125	Φ125	Φ125
Bit shank		COP54 DHD350R	HD55C DHD350Q	SD5	QL50
Hole range(mm)		Φ135-155	Φ135-155	Φ135-155	Φ135-155
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