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Flares for Tubing
- Ground Vehicle Standard
Published February 08, 2017 by SAE International in United States
Downloadable datasets availableAnnotation ability available
This SAE Standard covers specifications and performance requirements for 37° and 45° single and double flares for tube ends intended for use with SAE J512, SAE J513, SAE J514, and ISO 8434-2 connectors. The flares described in this document are intended for use with SAE metallic tube materials. Considerations such as the effects of wall thickness selection for specific working pressures, identifying appropriate length of thread engagements for specific applications with mating connectors and other associated criteria, shall be the responsibility of the user. For applicable nominal reference working pressures for hydraulic tubing, see SAE J1065 and ISO 10763.
In an effort to standardize within a global marketplace and ensuring that companies can remain competitive in an international market, it is the intent of this document to promote the use of metric tube and connector sizes which will:
lead to one global system;
guide users to a preferred system;
eliminate inventory duplications.
The SAE J533 specification has been in use for over 50 years and has served the original equipment industry well. The flares defined in SAE J533 are still extensively used in the automotive industry, on industrial equipment and on specific applications by original equipment manufacturers. Some users find the basic description of the flare seat surface in the current standard somewhat lacking in details associated with key attributes and how they relate to the physical characteristics of the formed material. This revised document uses Geometric Dimensioning and Tolerancing (GD&T) to define the face of the flare sealing surface. The use of GD&T tolerancing based on the total runout of the flare surface allows for the use of check fixtures during production, which can improve the quality of the finished product. Additional tables were added to incorporate metric tube sizes and a depiction of an inspection gage example for checking total runout was added.
Data Sets - Support Documents
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|Table 1||Dimensions of single and double 45° flares for inch tubing (see for dimension callouts)|
|Table 2||Dimensions of single and double 37° flares for metric OD tubing (see for dimension callouts)|
|Table 3||Dimensions of single and double 37° flares for inch OD tubing (see for dimension callouts)|
|Table 4||Recommended chamfer dimensions for single 37° flares (see for dimension callouts)|
Hydraulic Tube Fittings Committee
The Hydraulic Tube Fittings Subcommittee of the FCCTC develops and maintains SAE Standards, Recommended Practices and Information Reports relating to hydraulic and pneumatic tube fittings for all fluid power applications except hydraulic and pneumatic brake applications Participants in the FCCTC Hydraulic Tube Fittings Subcommittee include OEMs, suppliers, consulting firms, government and other interested parties.
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