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DTH HAMMERS
Down-the-hole (DTH) hammers are precision-engineered pneumatic tools designed for efficient rock drilling in mining, construction, and geotechnical applications. These hammers operate by forcing compressed air down the drill string to the hammer, where it energizes a piston, delivering powerful blows to the drill bit, facilitating fast and effective penetration into hard rock formations.
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4" DTH HAMMER
Model: JS4H,JH4H,JS4M,JS4S
Matched Bit shank: COP44/DHD340/MACH44SD4/M40/QL40
Thread connection: API 2 3/8"Reg
Hole range: 105-130MM
Application: Quarry blasting hole drilling, micrpile drilling, water well drilling
TEAMWHOLE 4INCH DTH HAMMER
TEAMWHOLE offers a wide range and versatile of high pressure DTH hammers from 2inch to 28inch. Hammers are a variable for down hole and blast hole applications and use in nearly all ground conditions.
Like all of other TEAMWHOLE DTH hammers, the 4inch DTH hammer maintains excellent operation pressure and extend service life and overall is the tool you require to get the maximum out off all your equipment.
Features
- Patented features maximize energy output and reduce service requirements.
- Fewer internal components minimize service requirements.
- High frequency design ensures smooth operation.
- All critical internal components are heat treated under strict control to maximize tool longevity.
- High frequency design ensures smooth operation.
5"DTH HAMMER WITH FOOT VALVE

Parts List 1 Top Sub 2 Top sub ring 3 Check valve 4 Spring 5 Shock ring 6 Air distributing seat 7 Inner cylinder 8 Piston 9 Outer cylinder 10 Bush Drive sub 11 O ring for chuck ring 12 Chuck ring 13 Chuck sleeve 5"DTH HAMMER WITHOUT FOOT VALVE

Parts List 1 Top Sub 2 Top sub ring 3 Check valve 4 Spring 5 Shock ring 6 Check valve 7 Inner Cylinder 8 Piston 9 Outer cylinder 10 Bush Drive sub 11 O ring 12 Bit retainer ring 13 Chuck sleeve Technical Specification Hammer Model Bit Shank Foot Valve Connection Thread Hammer OD Hammer length(without bit) Bit range Hammer Weight Air consumption at 18Bar Work pressure JH4H DHD340 Yes API 2 3/8”reg pin 99mm 947mm 105-130mm 41kg 11m³/min 15-25Bar JH4L QLX40 Yes API 2 3/8”reg pin 99mm 947.5mm 105-130mm 41kg 11m³/min 15-25Bar JH4S SD4 Yes API 2 3/8”reg pin 99mm 998mm 105-130mm 41kg 11m³/min 15-25Bar JS4H DHD340 No API 2 3/8”reg pin 99mm 967mm 105-130mm 40kg 11m³/min 15-25Bar JS4L QLX40 No API 2 3/8”reg pin 99mm 967.5mm 105-130mm 40kg 11m³/min 15-25Bar JS4M MISSIN40 No API 2 3/8”reg pin 99mm 998mm 105-130mm 40kg 11m³/min 15-25Bar JS4S SD4 No API 2 3/8”reg pin 99mm 998mm 105-130mm 40kg 11m³/min 15-25Bar TEAMWHOLE OTHER DTH HAMMER MODEL DTH HAMMER(Inch) Matched Bit Shank Bit Range/mm 3.5inch COP32/COP34/MACH303/DHD3.5/BR33 90-110mm 4inch COP42/COP44/MACH44/DHD340/QLX40/MISSION40/SD4 105-130mm 5inch COP54/MACH54/DHD350/QL50/SD5/MISSION50 130-152mm 6inch COP64/DHD360/QL60/SD6/MISSION60 152-190mm 8inch COP84/DHD380/QL80/SD8/MISSION80 203-254mm 10inch SD10/NUMA100/TH10 254-305mm 12inch SD12/NUMA120/DHD112/NUMA125 305-350mm 14inch TK14/NUMA125 350-450mm 18inch TK18/NUMA180 450-600mm 24inch TK24/NUMA240 600-800mm 28inch TK19/NUMA280 800-1000mm Matched bits:


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