Products
Hydraulic Cylinder Series for Diverse Operating Conditions
Standard Hydraulic Cylinders for Construction Machinery
Working Principle
Hydraulic fluid enters the rodless chamber of the cylinder, pushing the piston and piston rod outward. When the hydraulic flow is switched to the rod chamber, the piston rod retracts. The hydraulic cylinder converts hydraulic energy into linear mechanical energy to perform pushing and pulling movements.
Structural Features
The cylinder tube is manufactured using precision boring, rolling, and honing processes, providing high dimensional accuracy and controlled surface roughness.
The piston rod features surface hardening and chrome plating for improved wear and corrosion resistance.
Imported sealing systems are available as an option, providing reliable leakage resistance and stable performance under high- and low-temperature operating conditions.
Various mounting configurations are available, including clevis, flange, and trunnion mounting.
Key Advantages
1. High-Quality Cylinder Tube Material
Cylinder tube materials can be supplied with grades comparable to those commonly used by major Chinese seamless steel tube manufacturers, providing high material consistency and stable pressure resistance.
2. Strict Quality Control
Quality control is applied throughout the manufacturing process, including cleanliness control and pressure testing before shipment.
3. Customized Hydraulic Cylinders
Customized stroke, pressure, mounting interfaces, and other technical specifications are available according to customer requirements.
4. Reliable Delivery & Export Support
Stable production scheduling with export documentation, packaging, customs clearance support, and worldwide shipping services.
5. Technical Support
Our technical team provides cylinder selection support and customized solutions based on equipment requirements and operating conditions.
Product Specifications
Bore Diameter
Standard range: 20–1900 mm
Customized oversized bore diameters are available upon request.
Stroke
Standard range: 50–15,000 mm
Customized stroke lengths are available according to customer requirements.
Rated Working Pressure
Standard range: 16–35 MPa
Design pressure up to 42 MPa is available for specific applications.
Operating Temperature
Standard range: -20°C to +80°C
Special sealing systems for high- or low-temperature applications are available.
Materials
Cylinder Tube: 27SiMn / 42CrMo
Piston Rod: 45# quenched and tempered steel / 42CrMo
Stainless steel materials are available for corrosion-resistant applications.
Surface Treatment
Piston Rod: Hard chrome plating
Cylinder Tube: Anti-corrosion primer coating
Optional treatments include black oxide and polyurethane top coating.
Seals
Standard domestic sealing systems are available.
Imported sealing systems from Parker, NOK, and other brands can be supplied upon request.
Sealing materials can be selected according to requirements for oil resistance, water resistance, wear resistance, and operating temperature.
Mounting Options
Available mounting configurations include:
* Clevis mounting
* Front flange
* Rear flange
* Trunnion mounting
* Foot mounting
Customized mounting structures are available according to customer drawings and equipment requirements.
Weight
Weight is calculated according to bore diameter, stroke, materials, and configuration.
Individual product weight can be provided for logistics and shipping calculations.
Testing
Each cylinder undergoes a 1.5× rated working pressure pressure-holding test before shipment.
Testing includes:
* Pressure resistance test
* Leakage inspection
* Cleanliness inspection
Third-party inspection reports can be provided upon request.
Product Parameters
1. Bore diameter range: 20–1,900 mm
1. Miniature and Lightweight Cylinders: Bore diameters of 20/25/32 mm, suitable for tooling fixtures, small agricultural machinery, and equipment limit stops
2. Standard Construction Machinery Cylinders: Bore diameters 40–150 mm; compatible with complete sets of hydraulic components for excavators, loaders, forklifts, road rollers, sanitation machinery, and pavers (boom cylinders, bucket cylinders, steering cylinders, and dump cylinder)
3. Medium-to-Large Heavy-Duty Hydraulic Cylinders: Bore diameters 160–600 mm; supplied for mining equipment, tunnel boring machine components, cranes, waste compactors, and engineering lifting mechanisms
4. Extra-large Custom Hydraulic Cylinders: Bore diameter 650–1,900 mm; capable of producing hydraulic cylinders for metallurgical rolling mills, hydraulic cylinders for water control gates, marine hydraulic components, heavy-duty press cylinders, and specialized cylinders for large test benches
2. Stroke range: 50–15,000 mm
• Short-stroke locking cylinders: 50–200 mm, used for equipment clamping, limit stops, and swing mechanisms
• Standard single-stage cylinders: 300–1,500 mm, for general-purpose lifting and push-pull applications in construction machinery
• Long-stroke single-stage cylinders: 1,600–3,000 mm, for crane luffing booms and large lifting equipment
• Multi-stage telescopic cylinders: 3,000–15,000 mm, for dump truck lifting cylinders, aerial work platforms, and multi-section telescopic cylinders in lifting platforms
3. Working Pressure Ratings
Light-duty equipment cylinders: 6–10–16 MPa;
General-purpose construction machinery cylinders: 16–21 MPa;
Heavy-duty cylinders for mining, tunnel boring machines, and metallurgy: 25–31.5–35–40 MPa.
