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RBM-Reamer head,1-6m,Customized
ETERNAL
The diameter of raise boring reamer head ETERNAL can manufacture ranges from 1 to 6m. According to different rock conditions, ETERNAL could design different reamer heads and cutter installation positions.The structures of reamer heads ETERNAL could manufacture include integrated structure and assembly structure , which could be added with extra wings in future.
Reamer head | Head diameter | Roller cutters quantity | Roller cutter type | Pilot hole | Thread | Weight |
RBM-26” | 660 | 2 | CR4+CR5 | 1050 | ||
RBM-42" | 1060 | 4 | CR4+CR5 | 9-121/4” | 63/4“-91/4” | 2350 |
RBM-56” | 1420 | 6 | CR4+CR5 | 9-121/4” | 63/4“-91/4” | 3250 |
RBM-60" | 1524 | 8 | CR4+CR5 | 9-121/4" | 63/4“-91/4” | 4450 |
RBM-72" | 1829 | 10 | CR4+CR5 | 9-121/4” | 63/4“-91/4” | 4850 |
RBM-74” | 1870 | 10 | CR4+CR5 | 9-121/4” | 63/4”-91/4” | 4900 |
RBM-84" | 2134 | 12 | CR4+CR5 | 9-121/4” | 63/4"-91/4“ | 5600 |
RBM-96” | 2440 | 14 | CR4+CR5 | 9-121/4" | 63/4”-91/4” | 6500 |
RBM-108" | 2743 | 14/16 | CR4+CR5 | 9-121/4” | 63/4”-91/4” | 8350 |
RBM-120" | 3058 | 18 | CR4+CR5 | 9-121/4” | 63/4“-91/4” | 16000 |
RBM-122" | 3094 | 16 | CR4+CR5 | 121/2-133/4” | 91/4“-101/2” | 10250 |
RBM-123” | 3130 | 16 | CR4+CR5 | 121/2-133/4" | 91/4“-101/2” | 11100 |
RBM-134” | 3412 | 20 | CR4+CR5 | 121/2-15” | 101/2" | 16950 |
RBM-146" | 3720 | 22 | CR4+CR5 | 121/2-15" | 101/2" | 18700 |
RBM-150" | 3824 | 20 | CR4+CR5 | 121/2-15” | 101/2" | 14750 |
RBM-160” | 4074 | 24 | CR4+CR5 | 121/2-15” | 101/2” | 20450 |
RBM-172” | 4383 | 26 | CR4+CR5 | 121/2-15” | 101/2” | 21400 |
RBM-186" | 4737 | 28 | CR4+CR5 | 121/2-15” | 101/2" | 22550 |
RBM-197” | 5000 | 26 | CR4+CR5 | 133/4-15” | 101/2” | 31300 |
RBM-217" | 5520 | 28 | CR4+CR5 | 133/4-15” | 101/2" | 32250 |
RBM-231" | 5876 | 32 | CR4+CR5 | 133/4-15” | 101/2" | 32550 |
ETERNAL could design different reamer heads and cutter installation positions.
The reamer heads are used for raise boring machines,which is widely applied in various engineering sectors including transportation, water conservancy and hydropower, mining, and military industry. It is commonly used for vertical shaft excavation in civil engineering and mining projects, typically to drill through two parallel passages or connect underground roadways to the ground surface.
Application area | Phased Temporary Works | Temporary Works | Permanent Works |
Coal system | Various waste rock pass boreholes (coal bunkers, blind shafts, main shafts, auxiliary shafts, ventilation shafts) | Mining area air raises, coal passes, waste rock passes, gas drainage boreholes, safety rescue boreholes | Ventilation shafts, material hoist shafts |
Hydroelectric system | Various pilot shafts (penstocks, outlet shafts, surge shafts, elevator shafts) | Ventilation raises during construction (long & large tunnels, underground surge chambers), reinforcement boreholes | Ventilation raises and monitoring boreholes for permanent underground structures |
Other mines | Various pass raises (shafts, ore bunkers) | Mining area air raises, ore passes, muck passes, material & personnel raises | Ventilation boreholes, etc. |
Underground constructions | Various pilot shafts | Ventilation boreholes during construction | Ventilation shafts, access shafts |
Features of Reamer Heads
1.The reamer body chooses high strength steel plates to weld.
2.The top plate and bottom plate choose wearing steel plates,such as NM400,NM500.Their surface hardness could reach HRC40-50.These materials not only have high surface hardness , but also good welding property.It is very suitable for reamer's top and bottom plates.
3.ETERNAL chooses suitable cutter types according to mine's work conditions.
Chemical specifications of reamer heads' wearing plates
NM400 and NM500 are common grades of wear-resistant steel plates, mainly used for structural components that can withstand high wear conditions.
NM400: NM400 plates are suitable for medium wear environments, such as mining machinery liners, engineering machinery bucket teeth, conveying equipment material troughs, port machinery components, etc.
NM500: NM500 plates are suitable for high-intensity wear environments, such as crusher hammers, wear-resistant liners, coal bin liners, excavator buckets, and other heavy wear components.
Element | C | Si | Mn | Nb | Ti | Cr | Ni | Mo | V |
NM400 | ≤0.25% | ≤0.70% | ≤1.60% | ≤0.06% | ≤0.05% | ≤1.00% | ≤0.70% | ≤0.50% | ≤0.10% |
NM500 | ≤0.38% | ≤0.70% | ≤1.70% | ≤0.06% | ≤0.05% | ≤1.20% | ≤0.70% | ≤0.80% | ≤0.10% |
Cases Display
FAQ
what is the function of reamer heads in underground engineerings?
The reamer head of raise boring tools serves as the core rock-breaking component for underground engineerings, and it is mainly applied in upward reaming operations from bottom to top during underground construction. It is generally used in conjunction with a pilot bit. After the pilot hole is drilled through from top to bottom, the pilot bit is replaced with the cutterhead to carry out reverse reaming.
