Rock Buckets
Casagrande Rock Buckets-
600-2500 MMRotary Diameter
-
160 kNmRotary Head Torque
- Casagrande Rock Buckets
- Gold Standard Rock Buckets
- Silver Standard Rock Buckets
CASAGRANDE ROCK BUCKET TOOLS
Are recommended for drilling layers of soil and rock in presence of water and when the drilling technology uses bentonite. As result of different job site reports, buckets are designed in two different ways:
· Single opening: suitable for fine grained soils and bored pile up to diameter 620 – 2680mm. particularly indicated in case of casings application and coarse gravel.
· Double opening: suitable for fine grained soils and bored pile over diameter 620 – 2680mm. particularly indicated for secant pile walls
Designed with a rotating bottom to load drilled material; a vent pipe making the water or bentonite pass through reduces the pressure on the tool so that it can be lifted up easily.
Provided with mechanical opening system to unlock bottom and release drilled material they can be supplied with different type of Teeth and Round Shank Chisel accordingly with soil and rock hardness.
Buckets diameters match perfectly Casagrande casings in both alternatives: Screw and Labyrinth types. Their dimensions can be changed on Client needs and they are available on request.
The weights are approximate values.
· Suitable for drilling in stratification with hardness range of 12.5 – 50 MPa
· Medium and hard Rock
· Very dense sand and gravel
TECHNICAL SPECIFICATIONS
Gold Standard
Cylinder Made of steel ASTM 516/70 Thickness = 20 mm Height = 1000 mm
Drive Head Plate Fixed and rotating bottom in steel ASTM 516/70 Thickness = 30/40 mm Hard faced ribbings HB 600 on the plates
Blades In steel ASTM 516/70 Thickness = 40 mm
Equipment Betek Round Shank Chisel (1″) 25.4 mm
Pilot bit Fixed with round shank chisel or with blade in special steel
Kelly box 200×200 mm / 130×130 mm Lower reamers plates in Hardox HB 400 Mobile upper reamer plate Ventilation system to prevent the formation of vacuum during
extraction
Silver Standard
Cylinder Made of steel ASTM 516/70 – Thickness = 20 mm – Height = 1000 mm
Drive Head Plate Fixed and rotating bottom in steel ASTM 516/70 – Thickness = 30/40 mm – Hard faced ribbings HB 600 on the bottoms
Blades In steel ASTM 516/70 – Thickness = 40 mm
Equipment Betek Round Shank Chisel (1″) 25.4 mm
Pilot bit Fixed with round shank chisel or with blade in special steel
Kelly box 200×200 mm / 130×130 mm
Lower reamers plates in Hardox HB 400 Mobile upper reamer plate Ventilation system to prevent the formation of vacuum during extraction
