Msd4 DTH Hammer for Bit Shank SD4 manufacturer from China Maxdrill Rock Tools Co.,Ltd.

Payment Terms:	T/T,L/C
Place of Origin:	Guizhou, China (Mainland)


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Product Detail

Means of Transport: Ocean,Land,Air

China DTH Hammer and Bits Supplier 3 45681012 Inch for Mining Water Well Drilling

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
Item	Item Description	Weight(kg)	Part Number
1	Top Sub	6.50	MD3501
2	"O"Ring of top Sub	0.01	MD3502
3	Check Valve	0.42	MD3503
4	Spring	0.04	MD3504
5	Compression Buffer	0.04	MD3505
6	Air Distributor	2.20	MD3506
7	Internal Cylinder	2.30	MD3507
8	Piston	9.00	MD3508
9	External Cylinder	15.60	MD3509
10	"O"Ring of stop Ring	0.02	MD3510
11	Stop Ring	0.20	MD3511
12	Drive Chuck	4.00	MD3512
13	Drill bit		MD3513

Technical Data

Length(less bit)	Weight(Less bit)	External Diameter	Bit Shank	Hole Range	Connection Thread
1084mm	40.5KG	99MM	SD4	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