AD640 Reverse Circulation (RC) Hammer
1. Basic Concept
- The AD640 is a high-performance reverse circulation (RC) hammer belonging to the AD600 series.
- It is a pneumatic percussion drilling tool that uses compressed air to drive the piston, achieving efficient rock breaking and reverse circulation sampling.
- Developed for grade control and exploration drilling, it is widely used in mineral and geotechnical projects.
2. Key Features
- Optimized airflow design: Redesigned for maximum airflow, improving flushing efficiency under variable pressures.
- Top-loading inner tube: Enables quick replacement of worn parts, reducing maintenance time.
- Robust construction: OD 121 mm (3-3/4 in), weight 66 kg (145.5 lbs), with piston case wear protection.
- Wide bit compatibility: Supports bit sizes from 127 mm (5 in) to 140 mm (5-1/2 in).
- Versatile pressure range: Operates reliably under low to high air pressures in soft to hard rock.
3. Application Scenarios
- Mining grade control: In-pit grade monitoring ahead of production drilling.
- Mineral exploration: Slimline and shallow-to-medium depth RC drilling.
- Quarry & civil works: Rock excavation, foundation investigation, and road/rail projects.
- Geotechnical drilling: Core sampling in medium-hard to hard formations.
4. Main Advantages
- High efficiency: Superior airflow and percussion power deliver fast penetration and clean sample recovery.
- Low maintenance: Minimal internal parts and top-loading design cut downtime and repair costs.
- Proven reliability: Australian-engineered and field-proven in harsh global environments.
- Cost-effective: Balanced performance and durability reduce overall drilling costs.
| BILL OF MATERIALS | ||||
| ITEM NO | EPIROC PART NO | AIRDRILL PART NO | EPROC DESCRIPTION | |
| 3178960133 | 640000 | RC, AD640, A-KIT | ||
| 1 | 3178960061 | 5117110 | RC, AD117, PART CIRCLIP (#88) | |
| 2 | 3178960062 | 5117620 | RC, AD117, PART AIR SCREEN | |
| 3 | 3178960119 | 640600 | RC, AD640, PART ADAPTOR NOZZLE | |
| 4 | 3178960017 | OR234 | O-RING AD117 ADAPTOR NOZZLE | |
| 5 | 3178960121 | 640900 | RC, AD640, PART CHECK VALVE W/ SEAL | |
| 6 | 3178960045 | 5108915 | RC, AD108/116, PART 640 CHECK VALVE SEAL | |
| 7 | 3178960120 | 640910 | RC, AD640, PART CHECK VALVE SPRING | |
| 8 | 3178960125 | 640505 | HT RC, AD640, PART NEXTGEN INNER TUBE | |
| 9 | 3178960004 | 542/3 | O-RING AD108 I/TUBE | |
| 10 | 3178960130 | 640700 | RC, AD640, PART NEXTGEN TOP CYLINDER | |
| 11 | 3178960012 | 5108710 | O-RING AD108 TOP CYLINDER | |
| 12 | 3178960126 | 640200 | RC, AD640, PART NEXTGEN PISTON | |
| 13 | 3178960131 | 640100 | RC, AD640, PART PISTON CASE | |
| 14 | 3178960137 | 640201 | RC, AD640, PART NEXTGEN PIST RET RING | |
| 15 | 3178960012 | 5108710 | O-RING AD108 TOP CYLINDER | |
| 16 | 3178960008 | 5108310 | O-RING AD108 BEARING | |
| 17 | 3178960123 | 640300 | RC, AD640, PART NEXTGEN BEARING BUSH | |
| 18 | 3178960124 | 640800 | RC, AD640, PART NEXTGEN BIT RINGS | |
| 19 | 3178960002 | 5108810 | O-RING BIT RING | |
| 20 | SLEEVES | |||
| 21 | 3178960135 | 640400 | RC, AD640, PART NEXTGEN DRIVE SUB | |
| 3178960134 | 640120 | RC, AD640, PART SEAL KIT | ||
| AD640 REVERSE RICULATION BITS | ||||
| HAMMER MODEL | SIZE | EPIROC PART NO | AIRDRILL PART NO | WEIGHT |
| AD640 REVERSE CIRCULATION (General purpose) |
127 mm 5 in | 3178900070 | B640127DC | 12.90 kg 28.43 lbs |
| 130 mm 5-1/8 in | 3178900077 | B640130DC | 12.96 kg 28.57 lbs | |
| 133 mm 5-1/4 in | 3178900076 | B640133DC | 13.16 kg 29.01 lbs | |
| 137 mm 5-3/8 in | 3178900079 | B640137DC | 13.23 kg 29.16 lbs | |
| 140 mm 5-1/2 in | 3178900072 | B640140DC | 13.42 kg 29.58 lbs | |
| 127 mm 5 in | 3178901013 | B640127DCFE | 12.90 kg 28.43 lbs | |
| (Iron Ore) | 130 mm 5-1/8 in | 3178901014 | B640130DCFE | 12.96 kg 28.57 lbs |
| 133 mm 5-1/4 in | 3178901015 | B640133DCFE | 13.16 kg 29.01 lbs | |
| 137 mm 5-3/8 in | 3178901016 | B640137DCFE | 13.23 kg 29.16 lbs | |
| 140 mm 5-1/2 in | 3178901017 | B640140DCFE | 13.42 kg 29.58 lbs | |
| 165 mm 6-1/2 in | 3178900082 | B640165RC | 19.10 kg 42.10 lbs | |
| (Collaring) | 178 mm 7 in | 3178900071 | B640178RC | 19.50 kg 43.00 lbs |
| 191 mm 7-1/2 in | 3178900083 | B640191RC | 20.16 kg 44.44 lbs | |