Msd4 DTH Hammer for Bit Shank SD4

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Basic Info.
  • Place of Origin: Guizhou  
  • Means of Transport: Ocean, Air, Land
Supply Capacity

Product Description
The Characteristics Of High Air Pressure DTH Hammer
-with foot valve
It is a kind of valveless high air pressure DTH Hammer with foot valve
It has the following characteristics:
Valveless air distribution. More reliable.
Simple design of the piston, long life.
More efficient energy transfer,faster drilling speed,
lower air consumption and lower oil consumption.
Fewer internal parts, simple structure,longer life,
Less failure and easier to maintain because all the parts are heat treated.
Easy to disassemble because the top sub, the drive chuck and the
external cylinder are connected by multistep thread .
Explanation of High Air Pressure DTH Hammer
-With Foot Valve Code
Example One:MD55
M-Maxdrill(Our company name )
D-DHD Bit Shank
5-5"hammer
5-The Fifth Generation Hammer
Example Two:MQL4
M- Maxdrill(Our company name )
QL4-QL40 Bit Shank

High Air Pressure with foot valve DTH Hammers
ItemItem DescriptionWeight(kg)Part Number
1Top Sub6.50MD3501
2"O"Ring of top Sub0.01MD3502
3Check Valve0.42MD3503
4Spring0.04MD3504
5Compression Buffer0.04MD3505
6Air Distributor2.20MD3506
7Internal Cylinder2.30MD3507
8Piston9.00MD3508
9External Cylinder15.60MD3509
10"O"Ring of stop Ring0.02MD3510
11Stop Ring0.20MD3511
12Drive Chuck4.00MD3512
13Drill bit
MD3513

Technical Data

Length(less bit)Weight(Less bit)External DiameterBit ShankHole RangeConnection Thread
1084mm40.5KG99MMSD4110-135API 2 3/8" REG
Working PressureImpact Rate At 1.5MpaRecommended Rotation SpeedAir Consumption
145-350psi
1.0-2.5Mpa28Hz25-40r/min200-600CFM



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Ms. Sherry Lee
Tel: 86-851-88639106
Mobile: 18286069733
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Contact Method
Maxdrill Rock Tools Co.,Ltd.
Xinhua Road, Guiyang, Guizhou, China (Mainland)
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