Hydraulic hose connectors are the core connection components in hydraulic systems, and their selection directly affects the performance, safety and service life of the system. Correctly selecting hydraulic hose connectors not only ensures efficient operation of the system, but also reduces maintenance costs and the risk of failure. The following are key factors to consider and practical guidelines when selecting hydraulic hose connectors.

 

 

1. Working pressure

 

The working pressure of the hydraulic system is the primary factor in selecting connectors. The rated pressure of the connector must be greater than or equal to the maximum working pressure of the system to ensure safe operation. For example:

 

• Low-pressure system (less than 25 MPa): threaded or ferrule connectors can be selected.
• Medium-high-pressure system (25-70 MPa): crimping or flange connectors are recommended.
• Ultra-high-pressure system(above 70 MPa): high-strength connectors with multiple layers of steel wire winding are required.

 

2. Medium type

 

The properties of the hydraulic oil (such as viscosity, corrosiveness) directly affect the material selection of the connector:

 

• Ordinary hydraulic oil: carbon steel connectors can meet the needs.
• Corrosive media: stainless steel or corrosion-resistant alloy connectors should be selected.
• High temperature media: connectors made of high temperature resistant materials (such as fluororubber) should be selected.

 

3. Hose size

 

The inner and outer diameters of the connector must match the hose size to ensure a tight connection and no leakage. When selecting, refer to the inner diameter, outer diameter and length of the hose to avoid installation difficulties or performance degradation due to size mismatch.

 

4. Connection method, working environment and sealing form

 

According to equipment requirements and working conditions, comprehensively select the connection method, sealing form and consider environmental factors:

 

• Crimp connector: suitable for high pressure and high vibration environments (such as construction machinery and mining equipment), with strong impact resistance.
• Flange connector: suitable for large flow and high pressure systems (such as petrochemicals and shipbuilding), with excellent sealing performance.
• Quick-change connector: easy to quickly connect and disconnect, suitable for equipment with frequent maintenance (such as agricultural machinery and logistics equipment).
• Threaded connector: simple structure, low cost, suitable for medium and low pressure systems (such as industrial equipment, hydraulic tools).
• Environmental adaptability: high temperature/low temperature environment requires temperature-resistant materials (such as fluororubber, nitrile rubber), high vibration environment preferably has impact-resistant design (such as buckle type, cone seal), corrosive environment requires corrosion-resistant materials (such as stainless steel).
• Sealing form: O-ring seal (medium and low pressure system, low cost, easy installation), cone seal (high pressure system, excellent vibration resistance), flat seal (suitable for flange connector, large flow system, good sealing).

 

Summary

 

Choosing the right hydraulic hose connector requires comprehensive consideration of working pressure, medium type, hose size, connection method, working environment, sealing form and other factors. Through reasonable selection, the efficient operation and long-term stability of the hydraulic system can be ensured. If you have any questions, it is recommended to consult professional technicians or suppliers for more accurate selection suggestions.