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中文PIT300 Rammed Shaft Casing Oscillator
Product Overview
The SEMW PIT300 Rammed Shaft Casing Oscillator is an electro-hydraulic casing installation machine developed for foundation pit and retaining works. Rather than continuously rotating the casing like a casing rotator, the PIT300 applies controlled oscillating motion and downward pressure to advance steel casing into the ground.
The PIT method can be considered where ground support, constrained working space and construction disturbance need careful management. The steel casing helps support the surrounding soil while excavation is carried out inside it. Actual method suitability depends on ground conditions and the approved engineering design.
SEMW PIT300 casing oscillator — manufacturer equipment photograph.Oscillating Casing Installation
Hydraulic oscillation and pressing force work together to advance the steel casing.
Ground-Supported Operation
Work is arranged at ground level, reducing the need for personnel to operate inside the excavation.
Controlled Construction
Designed for low-vibration casing operations with pressure and alignment control.
PIT Method & Site Considerations
The PIT method presses and oscillates a steel casing into the ground while excavation is performed inside the casing. The casing provides temporary support to the excavated opening and helps manage risks associated with loose ground and nearby structures.
- 01Position
Set and align the casing oscillator at the planned working location. - 02Clamp & Oscillate
Grip the casing and apply controlled oscillation with downward force. - 03Excavate
Remove soil inside the casing using suitable excavation equipment. - 04Complete Works
Follow the approved retaining or foundation construction procedure.
Site evaluation: Verify casing dimensions, excavation depth, adjacent structures, underground utilities, ground conditions and lifting arrangement before choosing the PIT method.
Technical Specifications
PIT300 Main Unit
| Parameter | Value |
|---|---|
| Maximum casing diameter | 3,090 mm |
| Maximum downward pressure | 441 kN |
| Maximum lifting force | 980 kN |
| Maximum oscillating moment | 1,176 kN·m |
| Maximum oscillating angle | 12° |
| Pressure cylinders | 4 |
| Oscillating cylinders | 2 |
| Clamping cylinders | 1 |
| Main unit weight | 8,500 kg |
| Lifting stroke | 300 mm |
Hydraulic System
| Parameter | Value |
|---|---|
| Maximum hydraulic pressure | 20.5 MPa |
| Pump displacement | 25 mL/rev × 2 groups |
| Motor capacity | 18.5 kW × 2 groups |
| Oil tank capacity | 450 L |
| Hydraulic unit dimensions | 1,350 × 1,050 × 1,500 mm |
| Hydraulic unit weight | 1,780 kg |
Published specifications are taken from the existing SEMW PIT300 product page. Final equipment configuration and site performance should be confirmed with SEMW before purchase.
Applications & Equipment Selection
Urban Foundation Pits
Retaining or excavation work where surrounding soil support and site disturbance require assessment.
Projects Near Existing Buildings
Foundation construction in developed areas where ground movement and adjacent assets must be considered.
Transport & Infrastructure
Potential use in subway, railway, road, bridge and related foundation projects, subject to design verification.
For equipment selection, provide the proposed casing diameter, installation depth, soil profile, nearby infrastructure and available construction footprint. The PIT300's oscillating casing method should be evaluated separately from continuous-rotation casing rotators in the SEMW CRD Series.
Frequently Asked Questions
What is the maximum casing diameter of the PIT300?
The published maximum diameter is 3,090 mm. The usable casing size for a project must be confirmed against its configuration and site conditions.
How does the PIT300 differ from a casing rotator?
The PIT300 uses a reciprocating oscillation method with downward pressure to install casing, whereas a casing rotator applies continuous rotary motion. Equipment selection depends on the project method and ground conditions.
What are its maximum pressure and lifting force?
SEMW lists a maximum downward pressure of 441 kN and a maximum lifting force of 980 kN for the PIT300.
Can the PIT300 work on a restricted urban site?
SEMW describes it as suitable for certain confined construction environments. Feasibility depends on the available working area, lifting arrangements, soil conditions and approved project design.
Discuss Your Foundation Project
Contact SEMW with the casing diameter, planned excavation depth, geological profile and site constraints to assess whether the PIT300 casing oscillation method is suitable for your project.
See also: SEMW Casing Rotator Series · DCP1005H Low Clearance Drilling Rig
