KR Series 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 air exhaust and cuttings discharge，which reduces the repeated
 crushing of rock，
4、A check vlave device is available to drill holes under water
  The KR Series DTH Hammer all ideal drilling tool，is widely used in such industries relating to energy，transportation，metallurgy，building etc

	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