AD670 Reverse Circulation (RC) Hammer

1. Basic Concept

The AD670 is a heavy-duty pneumatic RC hammer from the renowned AD600 series.
Adopting reverse circulation working principle, it uses compressed air to drive internal pistons for rock breaking and intact cuttings collection.
This large-size model is specially optimized for medium to deep hole drilling, targeting heavy-load operations in complex rock formations worldwide.

2. Key Features

Outer diameter reaches 136 mm with a solid heavy-duty structure, adapting to high-load continuous operation.
Matches drill bits ranging from 146 mm to 165 mm, covering large-diameter drilling demands.
Adopts classic top-loading inner tube structure for easy disassembly and part replacement.
Enhanced wear-resistant protection on key components, stable performance under high air pressure.
Optimized internal airflow channel to ensure smooth cuttings discharge.

3. Application Scenarios

Deep-hole mineral exploration and resource evaluation for various metal and non-metal mines.
In-pit grade control and large-scale blasting hole drilling in open-pit mines.
Large quarry operations and rock sampling for major infrastructure projects.
Geotechnical investigation and deep foundation drilling in tough geological conditions.

4. Main Advantages

Powerful impact energy achieves high penetration rate, greatly boosting overall drilling productivity.
Outstanding durability and anti-abrasion performance effectively extend service life.
Reverse circulation design prevents sample contamination and guarantees accurate detection results.
High compatibility with standard RC drill tools, low maintenance cost and excellent cost performance.

BILL OF MATERIALS
ITEM NO	EPIROC PART NO	AIRDRILL PART NO	EPROC DESCRIPTION
	3178960186	670000	RC, AD670, A-KIT NEXTGEN
1	3178960061	5117110	RC, AD117, PART CIRCLIP (#88)
2	3178960062	5117620	RC, AD117, PART AIR SCREEN
3	3178960155	660600	RC, AD650, PART/660/670 ADAPTOR NOZZLE
4	3178960017	OR234	O-RING AD117 ADAPTOR NOZZLE
5	3178960156	660900	RC, AD650, PART/660/670 CHECK VALVE W/SEAL
6	3178960018	5117915	SEAL AD117 CHECK VALVE LIP SEAL
7	3178960063	5117910	RC, AD117, PART CHECK VALVE SPRING
8	3178960180	670505 HT	HT RC, AD670, PART INNER TUBE
9	3178960005	545/7	O-RING AD117 I/TUBE
10	3178960174	660700	RC, AD660, PART TOP CYLINDER
11	3178960016	660704	O-RING AD660 TOP CYLINDER
12	3178960187	670200	RC, AD670, PART PISTON
13	3178960188	670100HD	RC, AD670, PART PISTON CASE
14	3178960015	5124710	O-RING AD124 TOP CYLINDER
15	3178960010	5124310	O-RING AD124 BEARING
16	3178960178	670300	RC, AD670, PART BEARING BUSH
17	3178960172	660800	RC, AD660, PART BIT RING
18	3178960003	660301	O-RING BIT RING
19			SLEEVES
20	3178960196	670400	RC, AD670, PART DRIVE SUB
21	3178960173	660120	RC, AD660, PART SEAL KIT

AD660 REVERSE RICULATION BITS
HAMMER MODEL	SIZE	EPIROC PART NO	AIRDRILL PART NO	EPIROC DESCRIPTION	WEIGHT
AD670 REVERSE CIRCULATION (Bit Retention)	137 mm 5-3/8 in	3178900159	B670137DC	RC AD670, BIT 137 mm RT SP HX	18.2 kg 40.1 lb
	140 mm 5-1/2 in	3178900142	B670140DC	RC AD670, BIT 140 mm RT SP HX	18.3 kg 40.4 lb
	143 mm 5-5/8 in	3178900164	B670143DC	RC AD670, BIT 143 mm RT SP HX	18.4 kg 40.6 lb
	146 mm 5-3/4 in	3178900150	B670146DC	RC AD670, BIT 146 mm RT SP HX	18.5 kg 40.8 lb
(PCD)	140 mm 5-1/2 in	3178900149	B670140DC-DE	RC AD670, BIT 140mm RT SP PCD G	18.3 kg 40.4 lb
	140 mm 5-1/2 in	3178900148	B670140DC-DA	RC AD670, BIT 140 mm RT SP PCD F	18.3 kg 40.4 lb
	140 mm 5-1/2 in	3178900147	B670140DC-DAT	RC AD670, BIT 140 mm RT SP PCD F	18.3 kg 40.4 lb
	143 mm 5-5/8 in	3178900173	B670143DC-DE	RC AD670, BIT 143 mm RT SP PCD G	18.4 kg 40.6 lb
	143 mm 5-5/8 in	3178900161	B670143DC-DA	RC AD670, BIT 143 mm RT SP PCD F	18.4 kg 40.6 lb
	143 mm 5-5/8 in	3178900171	B670143DC-DAT	RC AD670, BIT 143 mm RT SP PCD F	18.4 kg 40.6 lb
(Collaring)	165 mm 6-1/2 in	3178900137	B670165RC	RC AD670, BIT 165 mm SP	18.9 kg 41.7 lb
(Collaring)	191 mm 7-1/2 in	3178900139	B670191RC	RC AD670, BIT 191 mm SP	23.4 kg 51.6 lb