Big Hole 3 1/2" Dth Hammers Without Foot Vlave

DTH hammer
1, valveless air distribution. More reliable.
2, simple design of the piston, long life.
3, More efficient energy transfer, faster drilling speed, lower air consumption and lower oil consumption.
4, fewer internal parts, simple structure, longer life, less failure and easier to maintain becayse all the parts are heat treated.
5, It is easy to disassemble because the top sub, the drive chuck and the external cylinder are connected by multi-step thread.

Available series of DTH hammer:
1) high pressure
SD series hammer: SD 5, SD 6, SD 8 and SD 12 DTH Hammers.
QL series hammer: QL 50, QL 60, QL 80 DTH Hammers.
HD series hammers: DHD 3.5, DHD 340. DHD 350, DHD 360, DHD380 DTH Hammers.

Mission series hammers: M30, M40, M50, M60, M80 DTH Hammers.
Cop series hammers: Cop 32/34, Cop 42/44, Cop 54/64 DTH Hammers.
2) low air pressure:

BR1, BR2, CIR 70, CIR 90, J60, J80, J100, J150, etc.

About Us:
1. Our factory has been specialized in manufacturing drilling tools and spare parts since 1980.
2. We have advanced technology and equipment.
3. Our technician has more than 25 year's professional working experience.
4. Rock drilling tools are exported throughout the world. Main market: Norway, Turkey, USA,
Canada, Australia, Brazil, Uruguay, Iran, Philippines, Thailand, India, etc.

COP 34, COP 44, COP 54, COP 64 Gold, COP 64, COP 84L, COP 84 hammers
Hammer	COP 34	COP 44	COP 54	COP 64 Gold	COP 64	COP 84L	COP 84
Type	Part No.	Part No.	Part No.	Part No.	Part No.	Part No.	Part No.
Standard	9703-03-00	9704-03-00	9705-03-00	9706-5-30	9706-05-00	9708-8-8	9708-08-00
			9705-05-00
Q	9703-3-4	9704-3-4	9705-3-4	9706-05-34	9706-5-4
			9705-5-4
QHD			9705-03-06 API Reg		9706-05-06 API Reg
			9705-05-06 API Reg	9706-05-36 API Reg
				9706-07-36 API IF
WHD			9705-03-20 (API Reg)
Technical data
Effective length	954 mm	958 mm	1069 mm	1163 mm	1213mm	1230 mm	1323 mm
External diameter	83.5 mm	98 mm	120 mm	142 mm	142 mm	160 mm	178 mm
External diameter HD			126 mm	146 mm	146 mm
Hammer weight	27 kg	38 kg	57 kg	96 kg	95 kg	139 kg	158 kg
Hammer weight HD			67 kg	109 kg	109 kg
Recommended bit size	95-105 mm	110-125 mm	134-152 mm	156-178 mm	156-178 mm	191-219mm	203-254 mm
Rec. bit size HD hammer			140-152 mm	165-178 mm	165-178 mm
Rit shank	COP 34 (Secoroc 3.5")	IR340A	IR350R	IRQL60	IR 360 alt. Mission SD6/ 53-15	Mission SD8/ 63-15	IR380
Top sub thread	2 3 / 6 API Reg.	2 3 / 6 API Reg	2 3 / 6 API Reg	3 1 / 2 API Reg	3 1 / 2 API Reg	4 1 / 2 API Reg	4 1 / 2 API Reg
			3 1 / 2 API Reg	3 1 / 2 API IF
Wrench flat	65 mm	65 mm	65 mm	102 mm	102 mm	120 mm	140 mm
			95 mm
Wrench flat HD			95 mm
			102mm
Working pressure	6-25 bar (87-360 psi)	6-25 bar (87-360 psi)	6-25 bar (87-360 psi)	6-30 bar (87-430 psi)	6-25 bar (87-360 psi)	6-25 bar (87-360 psi)	6-20 bar (87-290 psi)