China Maxdrill Ql40 DTH Hammer for Down The Hole Drilling

Maxdrill QL40 DTH Hammer for down the hole drilling
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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 HammersItemItem DescriptionWeight(kg)Part Number1Top Sub6.50MQL4012"O"Ring of top Sub0.01MQL402 Check Valve0.42MQL4034Spring0.04MQL4045Compression Buffer0.04MQL4056Air Distributor2.50MQL4067Internal Cylinder2.30MQL407 Piston9.00MQL4089External Cylinder17.00MQL409 Guided Sleeve0.80MQL41011"O"Ring of stop Ring0.01MQL41112Stop Ring0.30MQL41213Drive Chuck3.00MQL41314Drill bit MQL414Technical Data
Length(less bit)Weight(Less bit)External DiameterBit ShankHole RangeConnection Thread1097mm41.00KG99MMQL40110-135API 2 3/8" REGWorking PressureImpact Rate At 1.5MpaRecommended Rotation SpeedAir Consumption145-350psi1.0-2.5Mpa28Hz25-40r/min200-600CFMProduction Process

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FAQ
The information you may like to know before order:
1. Methods of Payment:
T/T (Telegraphic Transfer) or Western Union or L/C at sight
2. Handling time for an order
based on order quantity, normally it takes 25 days for production.
only 2 or 3 days if we have stock on your request size.
3. Shipping way
Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or by air
Bulk order: we suggest by air or by sea.
4. Quality Control
We have our own experienced QC.
There will be strict inspection and testing for every order before shipping out.
5. After Services:
a. Our sales team will response for your question within 24 hours (Holidays Excluded)
b. Technical Support will be available in any time
c. Free replacement will provide once the failure confirmed caused by our product quality
Contact Information
Contact Person:Ms Sherry Lee

Website:maxdrillrocktools.en.made-in-china.com