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RD Rock Grinders
Rockwater’s drum cutter and rock grinder series provides a full line of models that cover most sizes of excavator and other applicable carriers. The RD rock grinders have a wide range of applications in excavation, mining, demolition, quarrying, tunneling and trenching.
Rockwater’s drum cutters/ rock grinders use robust spur gears driven by high-torque motors. The rotary drum cutter’s picks on twin drums will penetrate and remove materials through a combination of crushing and cutting action. The optimum number of pick and its arrangement ensures maximum cutting performance and minimum vibration.
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Product Features
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Maximum cutting performance and minimum service due to unique transmission technology.
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Low maintenance due to robust drive shaft and heavy duty sealing system.
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Underwater operation without additional installation.
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Wear-resistant tungsten carbide tip to withstand extreme stress and impact.
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High torque hydraulic motor for higher productivity and longer motor life cycle.
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Robust housing design with Hardox wear protection for higher uptime.
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Lubrication free slide ring seal system.
Specification
RD50, RD100, RD150 (6,500-41,000 lbs / 3-18 ton)
Model / Unit | Unit | RD50 | RD100 | RD150 |
|---|---|---|---|---|
Applicable Carrier | lbs / ton | 6,500-16,000 / 3-7 | 15,000-34,000 / 7-15 | 27,000-41,000 / 12-18 |
Max. Operating Pressure | psi | 5,100 | 5,100 | 5,100 |
Oil Flow | gpm | 13-24 | 20-33 | 29-45 |
Pick Shank Diameter | mm | 20 | 20 | 25 |
Number of Picks | pcs | 64 | 64 | 48 |
Diameter of Grinder Head | C (mm) | 370 | 370 | 560 |
Width of Grinder Head | B (mm) | 615 | 660 | 730 |
Length of Rock Grinder | A (mm) | 740 | 740 | 990 |
Max. Rock Hardness | Mpa | 25 | 40 | 50 |
Max. Torque @ 5,100 psi | Nm | 3,150 | 5,200 | 10,400 |
Max. Cutting Force @ 5,100 psi | N | 17,800 | 23,200 | 36,200 |
Rotational Speed | rpm | 90-160 | 80-135 | 60-110 |
Weight | lb | 860 | 925 | 1,765 |
RD50, RD100, RD150 (45,000-74,000 lbs / 20-50 ton)
Model / Unit | UOM | RD300 | RD400 | RD500 |
|---|---|---|---|---|
Applicable Carrier | lb / ton | 45,000-74,000 / 20-33 | 55,000-90,000 / 25-40 | 78,000-112,000 / 35-50 |
Max. Operating Pressure | psi | 5,100 | 5,100 | 5,100 |
Oil Flow | gpm | 50-85 | 50-85 | 73-108 |
Pick Shank Diameter | mm | 30 | 30 | 30 |
Number of Picks | pcs | 48 | 48 | 56 |
Diameter of Grinder Head | C (mm) | 670 | 670 | 710 |
Width of Grinder Head | B (mm) | 880 | 920 | 950 |
Length of Rock Grinder | A (mm) | 1,200 | 1,200 | 1,300 |
Max. Rock Hardness | Mpa | 70 | 80 | 100 |
Max. Torque @ 5,100 psi | Nm | 19,500 | 23,400 | 27,800 |
Max. Cutting Force @ 5,100 psi | N | 58,200 | 69,900 | 81,800 |
Rotational Speed | rpm | 60-90 | 50-90 | 55-85 |
Weight | lb | 3,860 | 4,080 | 5,180 |