Alloy Steel Reverse Circulation DTH Bit for Rock Drilling 3" 4" 4.5" 5" 5.5"
RC45 / RE004 / RE543 / PR54R / RE542 / RE531 / RE545 / PR40 / PR52 / RE547 / PR54
RC bits sizes available:
1) 3" RC Bits: diameter (86mm-102mm), shank (RE531),
2) 4'' RC Bits: diameter (114mm-127mm), shank (RE004, RE004R),
3) 4.5" RC Bits: diameter (121mm - 133mm), shank (RE542, RE543),
4) 5'' RC Bits: Diameter (113mm-146mm), shank (RE545, PR40),
5) 5.5'' RC Bits: Diameter (133-146mm), shank (RE547, PR52, PR54, RC45, AD670) Other sizes can be upon customer's requirements. Customized acceptable. Reverse Circulation Hammer specifications: 1) 3" RC hammers: RE531,
2) 4'' RC hammers: RE004, RE004R,
3) 4.5" RC hammer: RE542, RE543,
4) 5'' RC hammer: RE545, PR40,
5) 5.5" RC hammer: RE547, PR52, PR54, RC45, AD670
6) other sizes could be made by clients' request. Hammer | Bit Shank | Hole Range (mm) | External Diameter (mm) | Length (without bit) mm | Weight | Connection Thread | Working Pressure |
RE531 | RE531 | 84-100 | 81 | 1069 | 29 | 3" Remet | 1.0-3.0Mpa |
RE004 | RE004 | 111-127 | 107 | 1252 | 52 | 3.5"-4" Remet / 4" Metzke | 1.0-3.0Mpa |
RE542 | RE542 | 113-130 | 109.5 | 1191 | 57 | 3.5"-4" Remet / 4" Metzke | 1.0-3.0Mpa |
RE543 | RE543 | 120-135 | 116 | 1191 | 62 | 3.5"-4" Remet / 4" Metzke | 1.0-3.0Mpa |
RE545 | RE545 | 122-135 | 117.5 | 1261 | 65 | 4"-4.5"Remet / 4"-4.5"Metzke | 1.5-3.5Mpa |
RE547 | RE547 | 130-146 | 124.5 | 1270 | 71 | 4.5"Remet / 4.5"Metzke | 1.5-3.5Mpa |
PR40 | PR40 | 124-142 | 120.5 | 1362 | 80.5 | 3.5"-4.5"Remet / 3.5"-4.5"Metzke | 1.5-3.5Mpa |
PR52 | PR52 | 126-142 | 121 | 1227 | 68.5 | 4"-4.5"Remet / 4"-4.5"Metzke | 1.5-3.5Mpa |
PR52R | PR52/PR52R | 130-146 | 124 | 1225 | 65 | 4"-4.5"Remet / 4"-4.5"Metzke | 1.5-3.5Mpa |
PR54 | PR54 | 135-150 | 130 | 1294 | 84.5 | 4.5"Remet / 4.5"Metzke | 1.5-3.5Mpa |
RC45 | RC45 | 130-146 | 124.5 | 1298 | 71 | 4.5"Remet / 4.5"Metzke | 1.5-3.5Mpa |
AD670 | AD670 | 135-150 | 132 | 1339 | 90 | 4.5" Remet / 4.5" Metzke | 1.5-3.5Mpa |
About Us:
We are a professional producer and major manufacturer for rock drilling tools, whom are capable to design and manufacture according to customer's requirement on the Bit DiaNo., Air holes, carbide button shape and the bit face shape. High air pressure and low air pressure.
Thanks to our long year experienced technicians and engineers in the field for more than 15 years, whom make this into reality and meet the clients' demand accurately.
Our advantage and strongpoints:
1. Customized acceptable
2. Raw material is very high quality alloy metal, we focus on quality and care clients' concern.
3. Harden treatments


Package:
Carton box with foam, then into the ply-wooden cases and or pallet for protecting the products and avoid the damagement during transportation.
Customized package acceptable.
ABOUT US Changsha Chaojingang(CJG) Machinery Manufacturing Co., Ltd (Super Diamond) is one of the best manufacturers in China's drilling tool industry. Our company has many senior mechanical design engineers with more than 20 years of design experience in the drilling tool, the production process and technology are at the first-class level in China. Our drill tools adapt the top-quality raw materials, equipped with a complete production chain, and with excellent performance during service life. The design of our hammer and bit is simple and reasonable, with the characteristics of high flat degrees, smooth holes, high rigidity, fast punch speed, low failure rate, stable drilling, high penetration rate. The drilling depth exceeded customer expectations and was well received by customers.
WHY CHOOSE US 1.Strong research and development capabilities.
Belonging to the national high-tech enterprise,we developed China first Generation DTH hammer without foot valve with professional R&D team and 9 invention patents. And we initiate the first Chinese drilling tool forging program, with leading product customization capabilities. 2. High quality raw materials.
Our company has reached strategic cooperation with China's No.1 cemented carbide factory, processing the best quality raw materials into the best quality products to global users.
3.High-level production technology and strict quality management.
Our company has the whole process of drilling tools production line,and established a perfect ISO9001 management system, to ensure the precision of the product.
4.Professional service.
We have professional pre-sales service, which can tailor more efficient drilling products for you according to your air compressor, drill rig and rock conditions.on the premise of ensuring quality, we can provide customers with the best price. We have standardized after-sales service . PRODUCTION PROCESS OUR HONOR
Production Lead-time: Generally need 15-30 days. Transportation: By air, By Express or By sea according to your requests.