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SAE Vs ISO, these are organizations that set specific standards in various industries.

SAE Standards: Society of Automotive Engineers Thread

SAE standard is widely used in American.The SAE provides a multitude of guidelines for engineering components. One of the key elements they standardize is thread design. Understanding these standards helps ensure the effectiveness and safety of mechanical connections in hydraulic systems. Let’s delve into a few of these important SAE thread standards.

When Do I Need SAE Tube Fittings?

If you’re part of the automotive, aerospace, or commercial vehicle industries, chances are high that you are already using tube fittings and components made to SAE standards in your systems. Additionally, SAE tube fittings are commonly found in rotary equipment and air compressors in a wide variety of industries and applications.

If your hydraulic and fluid management systems already use SAE components, it is essential to replace parts with SAE compatible fittings. While fittings made to different specifications may look (and occasionally perform) similar, using mismatched components can lead to a shorter lifespan, and often system malfunction or failure.

SAE flange 3000 PSI 87311 flange
SAE flange 3000 PSI 87311 flange ISO12151-3 SAE J516

SAE J1926 Straight Thread O-Ring Boss (ORB)

This connection type is commonly found in medium and high pressure hydraulic systems. It’s characterized by a male straight thread with an O-ring, providing a leak-proof connection when the O-ring is compressed into the female port’s chamfer.

SAE J514 JIC/37° Hydraulic Connections

Another common connection in fluid power systems is the JIC/37° Hydraulic connection. The seal in these connectors is created by contact between the male flared and female coned seat, making it a mechanical connection.

JIC Female 74° Cone Seat SAE J514 26711
JIC Female 74° Cone Seat SAE J514 26711

SAE J512 45° Connections

Typically made of brass material, these connectors are widely used in automotive, refrigeration, and truck pipe systems. The seal is formed where the male flare and female cone meet.

45° SAE Flange 6000  PSI
ISO12151-3、SAE J516
45° SAE Flange 6000 PSI ISO12151-3 SAE J516

SAE J1453 (ORFS) O-ring Face Seal Connections

Recognized for their superior leak control, these connectors have a straight thread and an O-ring in the face. The seal is formed by compressing the O-ring onto the flat face of the female connector.

SAE J512 Inverted Connections

Most commonly found in automotive systems, these fittings are sealed at the flared surfaces. These threads also maintain a mechanical connection.

SAE J518 4-Bolt Flange

This connection comes in two pressure ratings: Code 61, considered the standard series, and Code 62, the high-pressure series. The connection is held by threaded bolts and sealed where the O-ring is compressed between the flanged head and the port’s flat surface.

SAE Split Flange Clamps
SAE Split Flange Clamps

The Noteworthy SAE J514 Standard

The SAE J514 standard specifically covers 37-degree flare fittings, including tube fittings and adapter unions. These fittings are capable of providing leak-proof, full-flow connections in hydraulic systems.

ISO Connections

ISO: International Organization for Standardization,provides standards for connections in fluid power systems.

ISO/DIS 6162 4-Bolt Flange

This connection is common in fluid power systems and comes in two pressure ratings: Code 61 (standard series) and Code 62 (high-pressure series). The seal is made where the O-ring is compressed between the flanged head and the flat surface of the port.

SAE Split Flange Clamps 6000 PSI ISO 6162 SAE J518 FS
SAE Split Flange Clamps 6000 PSI ISO 6162 SAE J518 FS
90° Elbow Metric Male Bite Type Flange ISO 6162 1CFL9 1DFS9 1CFL9-RN 1DFS9-RN
90° Elbow Metric Male Bite Type Flange ISO 6162 1CFL9 1DFS9 1CFL9-RN 1DFS9-RN

ISO 6149 Port and Stud Ends with ISO 261 Threads and O-ring Seal

Similar to the SAE J514 Straight Thread O-ring Boss (ORB), this type of connection incorporates metric threads. It is also considered a mechanical connection as it seals when the O-ring is compressed into the chamfer when mating the male connection.

90° Elbow  Male  Adjustable Stud End ISO 6149
90° Elbow  Male  Adjustable Stud End ISO 6149 1CH9-OG 1DH9-OG 1CH9-OG/RN 1DH9-OG/RN

The Remarkable ISO 8434-2 Standard

This standard specifies the design and performance requirements for 37° flared connectors suitable for use with ferrous and non-ferrous tubes. These connectors are for use in fluid power and general applications within the pressure and temperature limits specified.

SAE Vs ISO

SAE Vs ISO, While both them provide standards for various industries, the primary difference lies in their scope. SAE primarily focuses on the automotive industry, while ISO covers a broader range of industries.

Can SAE and ISO standards be used interchangeably?

It’s not recommended to use these standards interchangeably without proper knowledge, as they often have different specifications. Always refer to the standards and ensure compatibility before use.

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