DHD3.5-90 DTH Hammer Bit

• Customization: Available
• Customized: Non-Customized
• Standard: ISO
• Model NO.: DHD3.5-90 DTH Hammer Bit
• Type: Drilling Machine
• Material: High Speed Steel
• Usage: Well Drilling
• Power Type: Drill
• Color: Blue
• Function: New
• Gross Weight: 3-8kgs
• Shape: Flat or Concave or Convex
• Mining Object: Coal Machinery
• Key Word: DTH Hammer and Bits
• Transport Package: Carton
• Specification: CE
• Trademark: Bestlink
• Origin: China
• HS Code: 82071990
• Production Capacity: 5000000PCS Per Year

Product Description

DHD3.5-90 DTH Hammer Bit


1.10 years experience    2. Certificate: ISO9001: 2008     3. Material: Carbide


Bit Face Shape Selection:
1. Drop Center Bit   2. Concave Face   3. Convex Face   4. Double Gauge Face   5. Flat Face Bit

Carbide Button Shape Selection:
1. Domed/Round Button
2. Parabolic/Semi-Ballistic Buttons
3. Ballistic Button
4. Sharp Button
5. Flat Button

Available series of DTH hammer:
(1) high pressure
SD series hammer: SD 5, SD 6, SD 8, SD 12.
QL series hammer: QL 30, QL 40, QL 50, QL 60, QL 80.
DHD series hammers: DHD 3.5, DHD 340. DHD 350, DHD 360, DHD380.
Mission series hammers: M30, M40, M50, M60, M80.
Cop series hammers: Cop 32/34, Cop 42/44, Cop 54/64.
NUMA series hammers: Numa100, Numa120, Numa125
(2) medium pressure
BR Series: BR1, BR2, BR3
HD25A
(3) low air pressure:
CIR Series: CIR55, CIR60, CIR70, CIR80, CIR90, CIR100, CIR110, CIR150, CIR170, etc.
J Series: J60C, J70C, J80B, J100B, J150B, J170B, J200B, etc.



1. Deliver maximum energy to drilling bit, fast drilling speed and low air consumption due to the special inner structure of HD series DTH hammer designed according to newest rock drilling theory.
2. Smooth performance and long service lifeof HD series DTH hammer due to high quality alloy steel materials and advanced processing technology adapted.
3. Low problem rate and easy to maintenancedue to simple, reliable and easy assemble and disassemble inner structure of hammer.
4. Easy to depart bit from hammer due to multi- Head thread connecting chuck and cylinder of hammer.
5. Interchangeable with DTH bit and drill pipe.
About Us:
1. Our factory has been specialized in manufacturing drilling tools and spare parts since 1980.
2. We have advanced technology and equipment.
3. Our technician has more than 25 year's professional working experience.
4. Rock drilling tools are exported throughout the world. Main market: Norway, Turkey, USA,
Canada, Australia, Brazil, Uruguay, Iran, Philippines, Thailand, India, etc.

DTH hammer type		CIR90
Length(less bit)		795mm
Weight(less bit)		22.0kg
External diameter		Φ80mm
Bit shank IR3.5"		CIR90/QT90
Hole range(mm)		Φ90-130
Connection thread		male T48*10*2
Working pressure		0.5-0.7Mpa
Impact rate		820rpm(6bar)
Recommended Rotation speed
Air consumption	10bar	120L/s(6bar)
	18bar
	24bar

DTH hammer type		HD35	HD45	HD55
Length(less bit)		930mm	1030mm	1170mm
Weight(less bit)		24.5kg	39.2kg	71.5kg
External diameter		Φ81mm	Φ99m	Φ125m
Bit shank		IR3.5"COP34	COP44/DHD340	COP54/DHD350R
Hole range(mm)		Φ90-110	Φ110-135	Φ135-155
Connection thread		API 2 3 /8" Reg.	API 2 3 /8" Reg.	API 2 3 /8" Reg.
				API 3 1 /2" Reg.
Working pressure		0.5-2.5Mpa	0.5-2.5Mpa	0.5-2.5Mpa
Impact rate at 17 Bar		28Hz	27Hz	25Hz
Recommended Rotation speed		28r/min	25-40r/min	20-30r/min
Air consumption	10bar	80L/s	100L/s	1450L/s
	18bar	1600L/s	180L/s	280L/s
	24bar	210L/s	250L/s	390L/s

DTH hammer type		HD55C	HD65	HD85
Length(less bit)		1160mm	1248mm	1487mm
Weight(less bit)		70.00kg	98.00kg	188.00kg
External diameter		Φ125mm	Φ142m	Φ180m
Bit shank		HD55C DHD350Q	COP64/DHD360	COP84/DHD380
Hole range(mm)		Φ135-155	Φ155-190	Φ195-254
Connection thread		API 2³/8" Reg.	API 2³/8" Reg.	API 4 1 /2" Reg.
		API 3 1 /2" Reg.
Working pressure		0.5-2.5Mpa	0.5-2.5Mpa	0.5-2.5Mpa
Impact rate at 17 Bar		25Hz	23Hz	20Hz
Recommended Rotation speed		20-30r/min	15-25r/min	15-20r/min
Air consumption	10bar	140L/s	175L/s	190L/s
	18bar	280L/s	3400L/s	370L/s
	24bar	390L/s	475L/s	495L/s