Hight air pressure DTH Hammer

This hammer maximises efficiency and develops greater power for any compressor capacities available.As a result the HD series of Hammers penetrate 15% to 30% faster than competative Hammers available in the market giving you an additional production at a lower unit cost.
» Designed to suit high pressure drilling rigs.
» Water well drilling
» Record breaking penetration
» Bench drilling
» Exploring Civil Engineering Applications
» Lowest cost per foot drilled
» Mining /Mineral Exploration
» Simple & robust design. Exploring Civil Engineering Applications
» Oil well drilling
» Foot Valve not required in the bit
» Longer parts life

Low air pressure DTH Hammer

This DTH Hammer a kind of valve-equipped Low Air Pressure hammer with a single piston,a plate valve and a central exhaust structure. The compressed air is adopted as the driving force. To prevent dust pollution and get a better performance，some high-pressure water may be added into the air for wet rock drilling.
It is mainly featured in:
1.The strong energy of single impact and the low energy consumption in rock crushing;
2.The weight ratio of Piston and Bit almost reaches 1:1 to provide long effective acting time,which leads to the improved efficiency in rock crushing and the extended service life of the drilling tool;
3.A good performance in central ai r exhaust and cuttings discharge,which reduces the repeated crushing of rock;
4.A check vlave device is availabIe to drill ho1es under water.
This DTH Hammer,an ideal drilling tool,is widely used in such industries relating to energy,transportation,metallurgy,building etc.

structural drawing

	Item Description
	1	TopSub
	2	Valve Seal
	3	Check Valve
	4	Spring
	5	Compression Buffer
	6	"O" Ring
	7	Valve cover
	8	Guide Tube
	9	Valve
	10	Air Distributor
	11	Internal Cylinder
	12	Piston
	13	External Cylinder
	14	Guided sleeve
	15	Stop Ring
	16	Drive Chuck
	17	Drill Bit

Model	Length(mm)	Weight(Kg)	External diameter(mm)	Bit Shank	Hole Range(mm)	Connection Thread	Working Pressure(Mpa)
KD70	792	12	65	CIR70	76	T42×10×1.5	0.5-0.7
KD90	795	20	80	CIR90	90-100	T42×10×1.5	0.7-1.3
KD930	869	22	80	CIR90	90-100	T42×10×1.5	0.7-1.5
KD110	839	32	95	CIR110	110-130	API 2 3/8Reg	0.7-1.5
KD150	908	69	137	CIR150	150-178	T75×10×2.5	0.7-1.5