1000mm hydraulic casing puller with diesel engine power pack for pull out secant pile double wall casing

1000mm hydraulic casing puller with diesel engine power pack for pull out secant pile double wall casing 1000mm casing puller used for pull out double wall casing in secant pile 1000mm hydraulic casing puller with diesel engine power pack for pull out secant pile double wall casing with 880mm reduction insert1000mm casing puller hydraulic type with diesel engine power pack for pull out double wall casing during cased bored pile foundation work1000mm diesel engine power pack hydraulic casing puller used for extract casing pile in secant pile construction 1000mm hydraulic casing puller with electricity motor power pack for pull out secant pile double wall casing with 880mm reduction insert 1000mm hydraulic casing puller with diesel engine power pack for pull out secant pile double wall casing with 880mm reduction insert B1000 casing puller name unit parameter remark Lift cylinder quantity pc 4 Max stroke of cylinder mm 800 Clamp cylinder quantity pc 1 Max clamp force t 120 30MPa Max casing diameter mm 1062 Max lift force t 240 30MPa Weight kg 4200 Oversize (L×W×H) m 2.85x1.7x1.6 Transport size 2,HYDRAULIC POWER STATION MODEL specification note POWER 4BTAA3.9-C100 Engine power kW 75 big pump discharge l/min 150 Small pump discharge L/min 45 Working pressure:MPa 25 Hydraulic oil capacity L 900 Hydraulic oil number YB-N46 oversize(l×W×H)(mm) 3000×2000×1700 WEIGHT (kg) 2000 1000mm hydraulic casing puller (commonly referred to in deep foundation engineering as a casing extractor or retaining clamp) is a specialized heavy-duty geotechnical attachment designed to extract temporary steel casing pipes with an outer diameter (OD) of 1000mm from bored piles or secant pile walls.When skin friction and surrounding ground pressure make it impossible for a standard rotary drilling rig's winch to reclaim the casing, these standalone hydraulic systems provide the intense vertical breakout force required.Typical Technical Specifications While exact metrics vary by manufacturer , a standard heavy-duty 1000mm casing puller typically operates within the following parameters: Parameter Standard Range (1000mm Class) Target Casing Diameter 1000 mm (often accepts reduction inserts for 880mm or smaller) Max Lifting / Pulling Force 400 - 580 metric tons Max Clamping Force 160 - 200 metric tons Lifting Stroke 500 - 800 mm per cycle System Operating Pressure 25 - 32 MPa (250 - 320 bar) Equipment Weight (Approx.) 6.0 - 8.5 metric tons Core Components & Mechanics Hydraulic Clamping Ring: Features curved jaw segments equipped with hardened steel teeth. These jaws grip the smooth outer wall of the 1000mm casing evenly to prevent slippage or pipe deformation under immense pressure.Lifting Cylinders (Jacks): Typically a set of 2 or 4 high-pressure vertical cylinders that push against a rigid base frame deployed directly on the ground or on crane mats. Power Source: Can be powered by an auxiliary hydraulic loop directly from a large rotary drilling rig or operated via an independent, remote-controlled diesel/electric hydraulic power pack (typically 45-60 kW).Operational Advantages 1. High Versatility via Reduction Inserts A 1000mm base unit is highly adaptable. By swapping out internal bolt-on wedge inserts, the same machine can clamp and pull smaller casing profiles (such as 880mm, 750mm, or 620mm), maximizing fleet utilization.2. Protecting the Primary Rig Attempting to force stuck casings out using only a drilling rig's mast or main winch introduces severe structural fatigue and risk of tipping. A casing extractor transfers all structural loads safely to the ground surface.3. Continuous Reciprocating Action The system operates in a cycle: Clamp onto the casing Extend the lifting cylinders to pull the casing upward by 500-800mm. Release the clamp. Retract the cylinders downward to reset the stroke and repeat. 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