2000mm hydraulic casing oscillator drill rig type connect on liebherr-lb28 rotary drill rig with diesel engine power pack
Short version drill rig casing oscillator connected on liebherr- LB28 rotary drill rig for cased piling foundation work
2000mm hydraulic casing oscillator connected on bauer-bg33 rotary drill rig for cased bored pile foundation work
Foundation drill rig casing oscillator 1300mm used for drop down and pull out double wall casing during secant pile foundation work
 2000mm hydraulic casing oscillator is a heavy-duty geotechnical machine designed to install and extract large-diameter casings in the most challenging soil conditions, including boulders, heavy flow sands, and deep water tables. At a 2-meter diameter, this equipment is typically used for massive infrastructure projects like bridge piers, high-rise foundations, and deep shafts.

Key Functional Specifications

When dealing with a 2000mm unit, the mechanical forces involved are immense. Most top-tier manufacturers (such as Bauer-, Leffer-, or Casagrande-) design these with the following approximate capabilities:
Torque: Usually ranges from 3,500 kNm to 5,000+ kNm. This is necessary to overcome the skin friction of a 2000mm pipe at depths often exceeding 50 meters.
Lifting Force (Extraction): Can exceed 400 tons (4,000 kN). This allows the rig to pull the casing back out after the concrete has been poured, even if the soil has begun to "seize" the pipe.
Oscillation Angle: Typically around 25° to 30°. The machine "wiggles" the casing back and forth while pushing down, which significantly reduces the friction compared to a straight push.

Integration with Drilling Rigs

A 2000mm oscillator is rarely a standalone unit; it is almost always integrated with a large Hydraulic Rotary Drilling Rig:
Hydraulic Connection: The oscillator is powered by the rig's auxiliary hydraulic system or a separate Power Pack.

Mounting: It is attached to the undercarriage of the rig using a specialized attachment frame. The rig provides the "reaction weight" to keep the oscillator stable.
Drilling Tool: While the oscillator manages the casing, a 2000mm Drilling Bucket or Rock Auger works inside the casing to remove the soil


 

Advantages of the 2000mm Oscillator

Critical Operational Considerations

Casing Type: For a 2000mm oscillator, you must use Double Wall Casing. Single wall casing will likely buckle or "ovalize" under the clamping pressure and torque of an oscillator this size.
Clamping Collars: Ensure the clamping inserts are in perfect condition. If the inserts are worn, the oscillator will slip on the steel casing, scarring the metal and losing torque efficiency.
Reaction Weights: Because of the 2000mm diameter, the "uplift" force during extraction can actually lift the drilling rig off the ground. Often, additional counterweights or "screw-in" anchors are used to keep the setup grounded.
Lubrication: The heavy-duty bushings and pivot points of the oscillator are under constant pressure. Automatic lubrication systems are highly recommended for units of this scale.

Common Brands in the Market

 (BV Series): The industry standard for reliability and integration with BG rigs.
 (VRM Series): Known for being extremely robust and often used as standalone units with separate power packs.
Casagrande: Offers excellent high-torque oscillators often used in European and Middle Eastern projects.
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