Designed for high-pressure, high-load and confined working conditions, the cylinder provides controlled linear motion for equipment components that require extended operating reach while maintaining a compact installation length.
Jiaheng supplies TBM hydraulic cylinders with customized bore diameter, rod diameter, stroke, working pressure, mounting configuration and hydraulic connections according to equipment drawings and operating requirements.
Advantages and Characteristics
Extreme geological adaptability:
Adopting high-strength alloy cylinder and ceramic coating, it can withstand surrounding rock pressure of over 35MPa during tunnel excavation, and its wear resistance is increased by 40% in hard rock and water rich formations;
The sealing system adopts a composite structure of metal bellows and fluororubber, with a temperature resistance of -40 ℃~+120 ℃ and a waterproof rating of IP69K, suitable for humid and mud eroded environments in tunnels.
High precision synchronous control:
Integrated laser displacement sensor and electro-hydraulic servo valve, multi cylinder coordinated expansion and contraction synchronization error ≤ 1.5mm , ensuring millimeter level accuracy for shield machine tail sealing, pipe segment assembly and other operations;
Built in pressure compensation valve, which can maintain stable expansion and contraction speed even under complex geological pressure fluctuations.
Long lifespan and safety redundancy:
The surface of the piston rod is treated with ion nitriding , which improves its wear resistance by three times compared to traditional chrome plating, and has a service life of ≥ 120000 cycles;
Equipped with dual hydraulic control locks and mechanical locking devices, the locking error in case of sudden pressure loss is ≤ 0.8mm to prevent the mechanical arm from falling; The cylinder head is equipped with an over pressure protection valve to avoid the risk of cylinder explosion.
Intelligent monitoring and convenient maintenance:
External integrated pressure temperature displacement three in one sensor, real-time uploading of operational data to the construction management system, early warning of leaks, blockages and other faults;
Modular design reduces the replacement time of key components by 60%, adapting to the 24-hour continuous operation requirements of tunnel construction.
Anti vibration and lightweight design:
Adopting anti vibration hydraulic hose and flexible joint, capable of withstanding 50Hz, 30g acceleration vibration, reducing the impact of equipment operation on the oil cylinder;
Optimize the cylinder structure design, reduce the weight by 20% compared to the same parameter oil cylinder, lower the overall load of the machine, and improve the flexibility of mechanical movement.
Built for Long-Stroke TBM Operation
Tunnel construction machinery often requires a large operating stroke while installation space remains limited. A telescopic hydraulic cylinder for tunnel boring machines uses a multi-stage structure to provide greater extension from a relatively compact retracted length.
This makes it suitable for equipment functions involving:
● Long-distance extension and retraction
● Mechanical arm positioning
● Shield and support mechanism adjustment
● Equipment posture control
● Underground drilling and excavation systems
● Components operating in restricted installation spaces
The available stroke range of 300–8000 mm allows the cylinder to be configured for different TBM sizes and machine structures.
Heavy-Duty Performance Under High Hydraulic Pressure
TBM and underground construction systems operate under continuously changing loads caused by rock pressure, excavation resistance and equipment movement.
The cylinder can be designed for 28–45 MPa working pressure and thrust requirements from 200 kN to 5000 kN, providing the force required for demanding tunnel machinery applications.
High-strength cylinder components and wear-resistant surface treatments help maintain stable operation under heavy load, repeated movement and continuous-duty working conditions.
Reliable Operation in Harsh Tunnel Environments
Tunnel machinery hydraulic cylinders are exposed to moisture, mud, abrasive particles, vibration and changing temperatures.
For these operating conditions, the cylinder can incorporate:
● High-strength alloy steel cylinder barrels
● Wear-resistant piston rod surface treatment
● Heavy-duty sealing systems
● Dust and contamination protection
● Corrosion-resistant surface treatment
● Hydraulic cushioning
● Mechanical or hydraulic locking options
● Pressure, temperature or displacement sensing
These configurations can be selected according to the actual geological environment and equipment operating cycle.
Precision Position and Synchronization Control
Modern tunnel boring machines often use several hydraulic cylinders simultaneously. Accurate cylinder movement is therefore important for machine positioning, component alignment and stable operation.
Optional displacement sensors, pressure monitoring components and electro-hydraulic control interfaces can be integrated into the cylinder to support:
● Stroke position feedback
● Multi-cylinder synchronization
● Pressure monitoring
● Controlled extension and retraction
● Equipment status monitoring
● Integration with the TBM hydraulic control system
For multi-cylinder systems, synchronization requirements can be evaluated according to equipment drawings and control accuracy requirements.
Applications
Our Tunnel Boring Machine Hydraulic Cylinders can be customized for a range of underground and tunnel construction equipment, including:
Tunnel Boring Machines
Long-stroke hydraulic actuation for extension, positioning, support and auxiliary mechanisms used throughout TBM operation.
Shield Tunneling Machines
Hydraulic cylinders for mechanisms requiring high thrust, accurate positioning and reliable operation under humid and abrasive underground conditions.
Rock Drilling Equipment
Heavy-duty hydraulic actuation for drilling arms, positioning mechanisms and other components requiring controlled linear movement.
Roadheaders
Custom hydraulic cylinders for cutting-head positioning, support structures and auxiliary movement systems.
Underground Construction Machinery
Long-stroke and high-pressure cylinder solutions for specialized tunneling, mining and underground engineering equipment.
Custom TBM Hydraulic Cylinder Manufacturing
TBM hydraulic cylinders are rarely selected only by bore and stroke. Installation dimensions, load direction, connection method, working pressure, cycle frequency and environmental conditions must all be considered together.
Jiaheng can manufacture custom Tunnel Boring Machine Telescopic Hydraulic Cylinders according to your technical drawings, existing cylinder samples or equipment specifications.
Available customization includes:
● Cylinder bore and piston rod diameter
● Stroke length and retracted length
● Two-stage or multi-stage telescopic design
● Working and peak pressure
● Clevis, flange, trunnion and other mounting types
● Hydraulic port size and position
● Piston rod surface treatment
● Sealing materials
● Cushioning system
● Hydraulic locking
● Position and pressure sensors
● Low-temperature or corrosion-resistant configurations
Why Choose Jiaheng for Tunnel Machinery Hydraulic Cylinders?
Jiaheng develops hydraulic cylinders for construction machinery and customized heavy-duty applications, including high-pressure and long-stroke systems.
Our engineering capability supports:
● Custom hydraulic cylinder design
● Long-stroke and multi-stage cylinder manufacturing
● High-pressure heavy-duty applications
● Customized mounting and interface dimensions
● Hydraulic cylinder testing and inspection
● OEM and drawing-based production
● Replacement and new equipment cylinder development
Whether you require a new cylinder for a TBM project or a customized replacement for existing tunnel machinery, our engineers can develop a solution according to the actual equipment parameters and operating conditions.
