Maxdrill Ql40 Hard Rock 4 Inch DTH Hammer for Down Hole Drilling

• After-sales Service: Yes
• Warranty: 6 Months
• Certification: ISO 9001:2015
• Standard: GB/T2828.1-2003
• Surface Treatment: Painting
• Manufacturing Process: Machining
• Model NO.: MQL4
• Material: Alloy Steel & Tungsten Carbides
• Applicable Industries: Quarrying, Small Hole Drilling, Mining
• Key Word: DTH Hammer
• Machine Type: Drilling Tool
• Connection Thread: API 2 3/8" Reg
• Bit Shank: Ql40
• Weight: 41.00kg
• Working Pressure: 1.0-2.5MPa
• Impact Rate at 1.5MPa: 28Hz
• Processing Type: Machined
• External Diameter: 99mm
• Air Comsumption: 145-350psi/200-600cfm
• Hole Range: 110-135
• Model No: Mql4
• Transport Package: Plywood Carton or Plywood Pallet
• Specification: QL40
• Trademark: MAXDRILL
• Origin: China
• HS Code: 8431432000
• Production Capacity: 100000

Product Description

Maxdrill Ql40 Hard Rock 4 inch DTH Hammer for down hole drilling 
Product Show:


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

 

Remarks:
Hemispherical-66(Usually for very hard rocks)
Ballistic-65(Ususally for medium hard rocks)
Semiballistic-64(Usually for medium hard rocks)
QL4-QL40 Bit Shank

High Air Pressure with foot valve DTH Hammers
Item	Item Description	Weight(kg)	Part Number
1	Top Sub	6.50	MQL401
2	"O"Ring of top Sub	0.01	MQL402
	Check Valve	0.42	MQL403
4	Spring	0.04	MQL404
5	Compression Buffer	0.04	MQL405
6	Air Distributor	2.50	MQL406
7	Internal Cylinder	2.30	MQL407
	Piston	9.00	MQL408
9	External Cylinder	17.00	MQL409
	Guided Sleeve	0.80	MQL410
11	"O"Ring of stop Ring	0.01	MQL411
12	Stop Ring	0.30	MQL412
13	Drive Chuck	3.00	MQL413
14	Drill bit		MQL414

Technical Data

Length(less bit)	Weight(Less bit)	External Diameter	Bit Shank	Hole Range	Connection Thread
1097mm	41.00KG	99MM	QL40	110-135	API 2 3/8" REG
Working Pressure	Impact Rate At 1.5Mpa	Recommended Rotation Speed		Air Consumption
				145-350psi
1.0-2.5Mpa	28Hz	25-40r/min		200-600CFM

Product Process:


Packing Show:



Certificate Show:

Exhibition:



Wide Application:

Workshop show:


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