Product Overview
Hydraulic Hose Flange SAE is a flange-end hose fitting designed for connecting hydraulic hose assemblies to pumps, valves, cylinders, manifolds, and other high-flow hydraulic components in mobile and industrial hydraulic systems.
Product Features
High-Flow Connection Design
The flange connection provides a larger fluid passage than many threaded connections, helping reduce flow restriction in high-volume hydraulic circuits.
Suitable for Heavy-Duty Systems
Commonly used in hydraulic applications operating up to 420 bar (6,000 PSI), depending on flange series and size.
Reliable Sealing Performance
The O-ring face sealing design creates a positive seal between mating surfaces, helping reduce leakage under pressure pulsation and equipment vibration.
Standardized Interface Dimensions
Manufactured according to SAE J518 / ISO 6162 standards, supporting interchangeability across compatible hydraulic equipment and components.
Manufacturing & Quality Control
Hot Forged Flange Blanks
Flange bodies are produced from hot-forged steel blanks to improve grain flow continuity and reduce internal material discontinuities compared with machined bar stock components.
CNC Machining of Bolt Patterns
Bolt hole spacing, flange thickness, and mounting dimensions are machined on CNC equipment to maintain compliance with SAE J518 and ISO 6162 requirements.
Controlled O-Ring Groove Machining
O-ring grooves are machined using dedicated tooling programs to maintain groove width and depth consistency across production batches.
Surface Protection Verification
Plated components undergo coating thickness inspection before packaging to verify corrosion-protection requirements.
Batch Traceability
Production lots can be traced to raw material certificates, forging batches, machining records, and inspection reports.
Available Configurations
| Item | Available Options |
| Flange Standard | SAE J518 Code 61, SAE J518 Code 62 |
| Hose Size | DN12–DN51 |
| Connection Type | Straight, 45°, 90° |
| Material | Carbon Steel, Stainless Steel 304, Stainless Steel 316 |
| Surface Treatment | Zinc Plated, Zinc-Nickel Plated |
| O-Ring Material | NBR, FKM (Viton) |
| Marking | Part Number, Batch Code, Customer Logo |
| Packaging | Bulk Packaging, Individual Bag Packaging, Carton Packaging |
Application Scenarios
Construction Equipment
Used in excavators, loaders, cranes, and earthmoving machinery with high-flow hydraulic circuits.
Mining Equipment
Suitable for hydraulic systems requiring secure flange connections under high pressure and vibration.
Industrial Hydraulic Power Units
Applied in power packs, hydraulic presses, and large-scale hydraulic machinery.
Agricultural Machinery
Used in tractors, harvesters, and heavy-duty hydraulic implements with large oil-flow requirements.
FAQ
Q: What is the difference between Code 61 and Code 62 flanges?
A: Code 62 flanges are designed for higher-pressure applications, while Code 61 flanges are typically used in standard-pressure hydraulic systems.
Q: Why are SAE flanges used instead of threaded fittings?
A: Flange connections provide improved sealing stability and higher flow capacity in larger hydraulic circuits where threaded connections may become less practical.
Q: Are SAE flange fittings interchangeable between manufacturers?
A: Components manufactured to SAE J518 / ISO 6162 dimensions are generally interchangeable when the flange size and pressure series match.
Q: How is flange size selected?
A: Selection is based on hose size, required flow rate, operating pressure, and mating equipment specifications.
Q: What causes leakage in flange connections?
A: Common causes include damaged O-rings, incorrect bolt torque, contaminated sealing surfaces, or mismatched flange series.
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