Model Number	3/3.5,4,5,6,8,10,12 inches	Certification	ISO CE
Drill Rock hardness	F=6-20	Warranty	1 Year
Condition	New	After-sales Service	7X24hours available
Type	Rotary Drilling Rig	Color	As request
Processing Type	Forging	Button shape	Spherical, Ballistic, Semi-ballistic
Place of Origin	Beijing, China (Mainland)	Bit face shape	Flat, concave, convex, drop center
Brand Name	JCDRILL	Other shanks	COP,DHD,MISSION, SD
Usage	Rock drilling	Type	DTH Hammer
Material	Carbide	Machine Type	Drilling Tool

DTH Hammer
Type	Model	Outer Diameter
High pressure DTH Hammer
3 inch	JD25A	71mm
3.5 inch	JD35A/M30	82mm
4 inch	JD45A/QL40A/M40/SD4	99mm
5 inch	JD55A/QL50A/M50/SD5	125mm
6 inch	JD65A/QL60A/M60/SD6	142mm
8 inch	JD85A/QL80A/M80/SD8	180mm
10 inch	HD100A/SD10	225mm
12 inch	JD125A/SD12	275mm
14 inch	JD140A	-
Middel Pressure DTH Hammer
2.5 inch	BR1	56mm
3 inch	BR2	64mm
3.5 inch	BR3	82mm
Lower Pressure DTH Hammer
3 inch	CIR65	68mm
3.5 inch	CIR70	76mm
4 inch	CIR90	99mm
5 inch	CIR110	110mm
6 inch	CIR150	150mm
8 inch	CIR170	170mm
Back Hammer
6 inch	BH140	155mm
8 inch	BH170	190mm
10 inch	BH190	220mm
12 inch	BH240	190mm

Minimum Order Quantity	N/A
Price
Packaging Details	Standard Export Delivery Package
Delivery Time	7days
Payment Terms	T/T
Supply Ability	Based on Detailed Order

CIR 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 get a better performance and prevent dust pollution, some high-pressure water may be added into the air for wet rock drilling. DTH Hammer Avoid the problem happens on foot valve. Fracture,expansion and contraction Lower air comsumption and higher impact frequency. 15-30% higher drilling efficiency than the bit with foot valve. Simpler structure and less spare parts, makes easier and cheaper maintenance. Heat-hardened spare parts,makes longer serving life and less problem. Thread connection for top sub and drive chuck,makes easier disassembly

Low Air Pressure DTH Hammer
DTH hammer type:	CIR76	CIR90	CIR110	CIR130	CIR150	CIR170
Bit Shank:	CIR76	CIR90	CIR110	CIR110/CIR130	CIR150	All can be designed according to your requests!
Top Sub Thread:	F48x10PIN	F48x10PIN	API 23/8" RGE BOX	API 23/8" RGE BOX	F70x10PIN
Bit Diameter:	76(mm)	90-120(mm)	110-150(mm)	130-175(mm)	150-200(mm)
Working Pressure:	4-10(bar)	5-10(bar)	5-10(bar)	5-10(bar)	5-10(bar)