CIR/DHD/Cop/Br High Air Pressure Hard Rock Drilling Down The Hole/DTH Hammer Drill Bit for Mining & Water Drilling &Quarrying

• After-sales Service: Yes
• Warranty: 6 Months
• Certification: ISO 9001:2015
• Standard: GB/T2828.1-2003
• Surface Treatment: Painting
• Manufacturing Process: Machining
• Model NO.: QL50
• Material: Alloy Steel & Tungsten Carbides
• Length: 1097mm
• Weight: 41.00kg
• External Dimater: 99mm
• Bit Shank: Ql50
• Hole Range: 110-135
• Connection Thread: API 2 3/8" Reg
• Working Pressure: 1.0-2.5MPa
• Impact Rate at 1.5MPa: 28Hz
• Recommended Rotation Speed: 25-40r/Min
• Air Consumption: 145-350psi/200-600cfm
• Transport Package: Plywood Carton or Plywood Pallet
• Specification: QL50
• Trademark: Maxdrill
• Origin: China
• HS Code: 8431432000
• Production Capacity: 10000

Product Description

CIR/DHD/Cop/Br High Air Pressure Hard Rock Drilling Down The Hole/DTH Hammer Drill Bit for Mining & Water Drilling &Quarrying

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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
Technical Data

Face	Diameter		Part No.	No.xButton(mm)			Flushing holes	Weight
	Dia.	Inch		Outer	Inner	Front		Kg
Flat	140	5 1/2	140MQL50FF	7x18		7x14	2	16.5
	146	5 3/4	146MQL50FF	7x18		7x14	2	17.5
	150	5 7/8	150MQL50FF	8x18		8x14	2	18.5
	152	6	152MQL50FF	8x18		8x14	2	19.5

Face	Diameter		Part No.	No.xButton(mm)			Flushing holes	Weight
	Dia.	Inch		Outer	Inner	Front		Kg
Concave	140	5 1/2	140MQL50CC	7x18	4x14	3x14	2	16.5
	146	5 3/4	146MQL50CC	7x18	4x14	3x14	2	17.5
	150	5 7/8	150MQL50CC	8x18	4x14	4x14	2	18.5
	152	6	152MQL50CC	8x18	4x14	4x14	2	19.5

Face	Diameter		Part No.	No.xButton(mm)			Flushing holes	Weight
	Dia.	Inch		Outer	Inner	Front		Kg
Convex	140	5 1/2	140MQL50CV	7x18	4x14	3x14	2	16.5
	146	5 3/4	146MQL50CV	7x18	4x14	3x14	2	17.5
	150	5 7/8	150MQL50CV	8x18	4x14	4x14	2	18.5
	152	6	152MQL50CV	8x18	4x14	4x14	2	19.5

Production Process

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Wide Application

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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