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Hydraulic Rotary Piling Buckets
Hydraulic Auger & Bucket machine is used in piling method using Hydraulic Machine it is a method of pile foundation Backed by strong technical & production experience we are able to deliver the best tools of superior quality and service to meet your request.
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Metalix Piling Buckets — Rotary Drilling & Deep Foundation Solutions
What Is a Piling Bucket and Its Role in Rotary Drilling?
A piling bucket (also called a drilling bucket) is a critical cutting and spoil-removal tool used at the business end of a hydraulic rotary drilling rig. Mounted to the bottom of a telescopic Kelly bar, the bucket serves two simultaneous functions: it excavates soil or rock through rotation and crowd force, then traps the cuttings inside its cylindrical body so they can be lifted to the surface and dumped. Unlike augers that continuously convey spoil upward via helical flights, buckets rely on a rotating bottom plate with mechanical cutting teeth to break material, while a vent pipe equalizes pressure so the loaded tool can be extracted smoothly from slurry-filled boreholes.
In pile foundation work, buckets are indispensable when drilling through water-bearing strata or when bentonite slurry is used to stabilize the borehole wall. The bucket’s enclosed design prevents fluid inrush and maintains bore integrity—something open augers cannot reliably achieve in saturated or loose ground conditions. Once the target depth is reached and the bore is cleaned, the bucket’s bottom gate opens mechanically (via spring-loaded pins or manual release) to discharge spoil, and the cycle repeats until the pile shaft is complete.
Types of Piling Buckets Manufactured by Metalix
Metalix Engineering, based in Kolkata and operating since 1986, manufactures a focused range of piling buckets engineered for Indian infrastructure conditions and export markets. Based on verified product listings and catalog data, Metalix produces the following bucket variants:
1. Soil & Rock Bucket (Combined Design)
Metalix’s primary bucket offering is a dual-purpose soil and rock bucket available in diameters of 600 mm, 1000 mm, and 1200 mm. These conical-profile buckets are built from high-carbon steel and fitted with multiple replaceable cutting teeth (10 teeth on the 1000 mm model, 12 teeth on the 1200 mm model) to handle mixed strata ranging from stiff clay and dense sand to weathered rock. The combined design eliminates the need to swap tools when transitioning between soil and rock layers, reducing rig downtime on complex sites.
2. Core Barrel
Metalix manufactures core barrels as part of its rotary drilling tool lineup. Core barrels are annular cutting tools used to extract cylindrical rock cores from strong formations (typically 50–100 MPa compressive strength). The barrel’s cutting ring is fitted with hard-facing or tungsten carbide inserts that grind an annular groove, leaving a solid core that is later broken and removed. This is essential for socketed piles in bedrock where end-bearing capacity is required.
3. Auger (Soil & Rock Augers)
While technically distinct from buckets, Metalix’s augers serve a complementary role in the same drilling sequence. Soil augers with conical profiles and replaceable teeth are used for upper soft strata, while rock augers with hardened cutting edges tackle denser formations before the bucket is deployed for final cleaning or rock coring.
Note: Metalix’s current catalog focuses on soil/rock combined buckets, core barrels, and augers. Specialized variants such as dedicated cleaning buckets, belling buckets (for base enlargement), or centrifugal buckets are not listed in their verified product range as of 2026, though custom fabrication may be available on request.
Diameter Range and Capacity
Bucket Diameter | Capacity | Operating Weight | No. of Teeth | Application |
600 mm | 1.0 cum | ~1,000 kg | — | Small-diameter piles, restricted access |
1000 mm | 1.0 cum | ~2,400 kg | 10 teeth | Standard infrastructure piles |
1200 mm | 2.0 cum | ~2,400 kg | 12 teeth | Large-diameter bridge/high-rise foundations |
Metalix buckets are available in conical shape optimized for soil flow and cutting efficiency. The 600 mm to 1200 mm range covers the majority of bored pile applications in India’s infrastructure sector, from metro viaducts to highway overpasses. Custom diameters and capacities can be engineered based on project-specific geotechnical reports.
Compatible Rigs and Kelly Bar Types
Metalix piling buckets connect to rotary drilling rigs via a Kelly box—the square-drive adapter that transfers torque and crowd force from the Kelly bar to the tool. Metalix buckets are designed for compatibility with:
- DMC (Direct Mud Circulation) Rigs — Metalix’s own line of hydraulic rotary piling machines
- Standard hydraulic rotary drilling rigs used across the Indian subcontinent
- Excavator-mounted rotary attachments (as noted in product specs: “Compatible Equipment Type: Excavator”)
The Kelly box dimensions are customizable to match common rig interfaces. Industry-standard Kelly box sizes that Metalix tools can be adapted to include:
Kelly Box Size | Typical Rig Compatibility |
130 × 130 mm | Compact rigs, mini piling rigs |
150 × 150 mm | Mid-size rotary rigs (Bauer BG 11–BG 24 class) |
200 × 200 mm | Heavy-duty rigs (Bauer BG 28+, Soilmec SR series) |
Metalix also manufactures Kelly bars and Kelly adapters in-house, ensuring seamless integration between the rig’s rotary drive and the bucket. Their Kelly bars are fabricated from high-strength seamless steel with interlocking or friction-type drive keys, depending on torque requirements and soil conditions.
As a producer of road mining picks we offer high wear & impact resistance for milling asphalt & concrete road to various depths. Our tungsten carbide picks offer improved wear resistance as well as outstanding fracture tougher characteristic.
As a quality-oriented organization, we are focused to provide our clients excellent quality. We Manufacture & Supply all kind of DMC complete Rig Set Augur Bore Piling Equipment soil Testing Equipment with all needed Tools & Tackle complete Like Pump Engine Generator Set in various parts of west Bengal & India.
Material and Build Quality
Metalix Engineering emphasizes prime-quality mild steel (MS) plate construction across all piling tools, with the following quality assurances:
- High-Carbon Steel Construction: Bucket bodies are fabricated from high-carbon steel plate for superior tensile strength and impact resistance during rock penetration.
- Rigorous Tensile Testing: All load-bearing components undergo tensile strength testing before dispatch to ensure they can endure maximum torque and crowd forces without deformation.
- Replaceable Cutting Teeth: Buckets are fitted with bolt-on teeth (analogous to industry-standard T25 or B47K profiles) that can be swapped in the field as they wear, extending bucket life and maintaining cutting efficiency.
- Wear Protection: While Metalix does not explicitly list Hardox or tungsten carbide hard-facing in public specs, the “high-carbon steel” designation and “prime quality MS plate” claims suggest hardened cutting edges and reinforced wear zones consistent with industry norms for piling tools in abrasive Indian soil conditions.
- ISO 9001:2015 Certified: Metalix’s manufacturing facility operates under ISO 9001:2015 quality management standards, ensuring dimensional accuracy and repeatable weld quality.
Product Images
Applications and Industries Served
Metalix piling buckets are deployed across India’s rapidly expanding infrastructure landscape, serving:
- Bridge Foundations: Bored piles for highway and railway overpasses, river crossings, and metro viaducts where deep shafts must penetrate alluvial deposits and weathered rock.
- High-Rise Buildings: Large-diameter piles (1000–1200 mm) for commercial and residential towers in Kolkata, Delhi NCR, Mumbai, and Bangalore.
- Industrial Complexes: Heavy-duty foundations for power plants, factories, and warehouses requiring high load-bearing capacity.
- Port and Marine Works: Piles for jetties, wharves, and coastal infrastructure where saline groundwater and loose marine deposits demand slurry-supported bucket drilling.
- Urban Infrastructure: Metro stations, underground parking, and utility tunnels where restricted access and vibration-sensitive environments favor rotary bored piles over driven piles.
With over two decades of manufacturing experience and a client base spanning government contractors and private developers across West Bengal and India, Metalix has established itself as a reliable domestic supplier for projects where imported tooling lead times are prohibitive.
Why Choose Metalix Piling Buckets?
- Domestic Manufacturing Advantage: Kolkata-based production means faster delivery, lower logistics costs, and responsive after-sales support for Indian contractors.
- Custom Engineering: Diameters, tooth configurations, and Kelly box dimensions can be tailored to specific rig models and geotechnical conditions.
- Complete Tooling Ecosystem: Metalix offers matched systems—buckets, augers, core barrels, Kelly bars, tremie pipes, and casing accessories—reducing supplier complexity.
- Proven Track Record: ISO-certified quality control and a technical team with deep field experience in Indian soil conditions.
Piling Bucket FAQ
1. What is a piling bucket used for?
A piling bucket is a cutting and spoil-removal tool mounted at the bottom of a Kelly bar on a hydraulic rotary drilling rig. It excavates soil or rock through rotation and crowd force, traps the cuttings inside its cylindrical body, and lifts them to the surface for dumping. Piling buckets are essential for bored pile foundation work—especially in water-bearing strata or when bentonite slurry is used to stabilize the borehole wall, as their enclosed design prevents fluid inrush and maintains bore integrity.
2. What sizes of piling buckets does Metalix Engineering manufacture?
Metalix Engineering manufactures soil and rock buckets in diameters of 600 mm, 1000 mm, and 1200 mm. The 600 mm bucket has a capacity of 1.0 cum and weighs approximately 1,000 kg. The 1000 mm bucket has a capacity of 1.0 cum, weighs approximately 2,400 kg, and is fitted with 10 replaceable cutting teeth. The 1200 mm bucket has a capacity of 2.0 cum, weighs approximately 2,400 kg, and is fitted with 12 replaceable cutting teeth. All three sizes feature a conical profile optimized for soil flow and cutting efficiency.
3. Which rigs and Kelly bars are your buckets compatible with?
Metalix piling buckets are compatible with DMC (Direct Mud Circulation) rigs, standard hydraulic rotary drilling rigs used across the Indian subcontinent, and excavator-mounted rotary attachments. They connect via a Kelly box that transfers torque and crowd force from the Kelly bar to the tool. Kelly box dimensions are customizable to match common rig interfaces, including 130×130 mm, 150×150 mm, and 200×200 mm sizes. Metalix also manufactures Kelly bars and Kelly adapters in-house to ensure seamless integration.
4. What materials are used in bucket construction for wear resistance?
Metalix piling buckets are fabricated from high-carbon steel plate for superior tensile strength and impact resistance during rock penetration. All load-bearing components undergo rigorous tensile strength testing before dispatch. The buckets are fitted with replaceable bolt-on cutting teeth that can be swapped in the field as they wear, extending bucket life and maintaining cutting efficiency. The manufacturing facility is ISO 9001:2015 certified, ensuring dimensional accuracy and repeatable weld quality across all tools.
5. Do you supply piling buckets outside West Bengal?
Metalix Engineering supplies piling buckets, augers, core barrels, and related foundation drilling tools across India and to overseas markets. Based in Kolkata with over two decades of manufacturing experience, the company serves government contractors and private developers nationwide—including projects in north east India and other major infrastructure corridors. Export inquiries are also welcomed.
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We Manufacture & Supply D.M.C Rig & Augur Machine Complete Set Rolling Machine Ruston Engine 3YDA,4YDA S.P.3L & S.P.4.L Pump with soil Testing Equipment Diesel Generator Complete Set Etc..
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