RC45/RC55 Reverse Circulation Down The Hole Hammer and Bits for Mining and Drilling
Product Specifications
| Attribute | Value |
| Manufacturing Process | Forging |
| Material | Alloy Steel |
| Connection Thread | API 3 1/2" Reg |
| Hole Range | Dia 155 - 190 mm |
| Working Pressure | 1.0 - 2.5MPa |
| Compatible Bit Shank | Mission60 / Cm60A |
| Transport Package | Ply-Wooden Cases for Exporting |
| Specification | 2 inch to 12 inch |
| Trademark | Super Diamond |
| Origin | China |
| HS Code | 8207199000 |
Product Advantages
- Matches over 95% compatibility with original products
- High-quality alloy steel with premium hardening for extended lifespan
- Full production chain ensures stable production and prompt delivery
- Manufactured by experienced technicians and engineers
- Customization options available with efficient service
- Competitive pricing with superior quality compared to smaller manufacturers
- Global reputation with customers in France, Spain, Italy, South Africa, Australia, and more
Advantages of Hammers Without Foot Valve
- Eliminates concerns about foot valve breakage, distortion, or expansion
- 15-30% higher drilling speed with lower energy consumption
- Simplified design with reliable components for easy, low-cost maintenance
- Reduced air and oil consumption (approximately 10% less)
- Highly recommended for optimal performance
Product Images
Technical Specifications
| Hammers | Bit Shank | Connection Thread | Suitable Bit | Working Pressure | Air Consumption |
| 1-3" Middle-low pressure DTH hammers | BR1 | RD40 box | 64-76mm | 0.7-1.75Mpa | 4.5m³/min |
| 3" hammers | DHD3.5 | API 2 3/8"Reg | 90-110mm | 1.0-1.5Mpa | 4.5m³/min |
| 4" hammers | DHD340 | API 2 3/8"Reg | 105-130mm | 1.0-2.5Mpa | 6m³/min |
| 5" hammers | DHD350 | API 3 1/2"Reg | 130-156mm | 1.0-2.5Mpa | 9m³/min |
| 6" hammers | DHD360 | API 3 1/2"Reg | 152-203mm | 1.0-2.5Mpa | 10m³/min |
| 8" hammers | DHD380 | API 4 1/2"Reg | 200-279mm | 1.0-2.5Mpa | 15m³/min |
| 10" hammers | SD10 | API 6 5/8"Reg | 254-330mm | 1.0-2.5Mpa | 22m³/min |
| 12" hammers | DHD1120 | API 6 5/8"Reg | 305-381mm | 1.0-2.5Mpa | 30m³/min |
Production Process
Company Overview
We are a leading manufacturer of rock drilling tools including DTH hammers, RC hammers, top hammer button bits, and ODEX systems. Our 26,600 square meter facility in LiuYang city, HuNan province includes 22,000 square meters of production space.
With premium quality, professional service, and competitive pricing, we've earned an excellent reputation worldwide, serving customers in Brazil, Peru, South Africa, Australia, Turkey, Russia, and more.
Quality Assurance
Our products are manufactured from high-quality steel with strict inspection of all components before shipping. We provide prompt responses to all customer feedback and suggestions.
Packaging & Shipping
Frequently Asked Questions
Are you a manufacturer or a trade company?
We are a manufacturer of rock drilling equipment and pneumatic tools in China.
How many workers in your factory and what is your company scale?
We have over 100 employees across production, sales, quality control, R&D, and management teams. Our 26,600m² facility includes 22,000m² of workshop space with 400+ advanced equipment sets. 50-70% of production is exported globally.
Where is your company located?
Located in Changsha city, Hunan province, 1.5 hours from Huanghua International Airport and 2.5 hours by express train from Guangzhou.
Why choose CJG DRILL?
17+ years experience, high-quality products compatible with major brands, competitive pricing, and excellent service.
Which port do you ship from?
Primarily Shanghai port, with Guangzhou port also available.
Do you accept OEM & ODM?
Yes, we accept both OEM and ODM requests.
What is your minimum order quantity?
MOQ is 1 piece or 1 complete set, with pricing dependent on order quantity.
What are your payment terms?
We accept T/T, L/C at sight, Western Union, and cash payments.
What is your typical delivery time?
Approximately one month, regardless of season.
Can we schedule a factory visit?
Absolutely. We welcome visitors and can arrange hotel reservations, airport pickup, and transportation upon request.
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