Product Overview
High-performance hydraulic arm cylinder specifically designed for Caterpillar E305.5 and E306 excavator models, engineered to withstand demanding working conditions with pressure ratings from 21-35 MPa.
| Product Name |
Hydraulic Arm Cylinder |
| Model Compatibility |
E305.5, E306 |
| Temperature Range |
-30°C to 100°C |
| Dimensions |
Customized according to E305.5 and E306 specifications |
| OEM Support |
Available |
Pressure Specifications
| Working Pressure |
21-35 MPa |
| Maximum Pressure |
40 MPa |
| Test Pressure |
52 MPa |
Service Support
| Service Stage |
Details |
| Pre-Sales Service |
Free consultation and technical advice; Customization options for dimensions and performance |
| In-Sales Service |
Fast production and delivery times; Real-time updates on manufacturing and shipment status |
| After-Sales Service |
Warranty on manufacturing defects; Technical support for installation and maintenance; Replacement parts available |
Manufacturing Excellence
Piston Rod Production
![Piston rod production process showing precision manufacturing equipment]()
| Material |
Tempered steel |
| Surface Treatment |
Induction hardened before chrome plating to prevent bending and scratching |
| Rust Resistance |
Resists rust for over 100 hours in salt spray tests |
| Production Process |
Produced and electroplated in-house with mirror finish technology |
Automated Welding Process
![Automatic welding process for hydraulic cylinder components]()
| Welding Method |
Fully automated welding for consistency and integrity |
| Craftsmanship |
Lean welding craft ensures strong joint strength and eliminates defects |
| Weld Seam Quality |
Weld seam matches the appearance of original parts |
| Durability |
Welded parts are not easy to fall off |
Quality Assurance
![Finished product warehouse display showing organized cylinder storage]()
![Additional view of finished hydraulic cylinders in warehouse]()
Company Profile
GuangZhou GuoLi Engineering Machinery Co., Ltd. brings over 16 years of specialized experience in excavator hydraulic cylinders. As a leading foreign trade company, we export a comprehensive range of products including crawler excavator arm cylinders, boom cylinders, bucket cylinders, cylinder tubes, cylinder rods, custom hydraulic cylinders, seal kits, hydraulic pumps, and electric parts for various excavator models. Our products have reached over 100 countries worldwide.
Exhibition Presence
Active participation in major industry exhibitions including 2023 Malaysia and 2024 Shanghai Bauma.
![Exhibition showcase with cooperated clients at industry trade shows]()
Certifications
![Industry certifications and quality assurance documentation]()
Frequently Asked Questions
How can I be sure the part will fit my excavator?
- Provide correct model number, machine serial number, or any numbers on the parts
- Or provide dimensions or drawings for custom fitting
What materials are used in your hydraulic cylinders?
- High frequency quenching No.40 manganese steel for superior bending resistance
- No.25 manganese steel tube material for enhanced wear resistance
- High-strength hardened steel for cylinder head and rod head durability
- Name-brand seal kits to minimize hydraulic cylinder oil leakage
How long does order delivery take?
- Common models: 7 days from stock
- Orders less than one container: approximately 2 weeks
- Orders of 1-2 containers: 4-6 weeks
- Custom manufacturing times confirmed during order discussion
What are the payment terms?
- Orders under $3000: Full payment at order
- Orders over $3000: 50% deposit, 50% balance upon delivery
- Customized orders: 70% deposit, 30% balance upon delivery
How is delivery handled?
- Customer shipping agents: Full cooperation provided
- No agent: We arrange shipping through established relationships
- Light goods: UPS/DHL/TNT (DAP terms)
- Heavy goods: Sea freight (FOB, CIF, CFR)
