SAE J1402_200501

This recommended practice covers minimum requirements for air brake hose assemblies made from reinforced elastomeric hose and suitable fittings for use in automotive air brake systems including flexible connections from frame to axle, tractor to trailer, trailer to trailer and other unshielded air lines with air pressures up to 1 MPa, that are exposed to potential pull or impact. This hose is not to be used where temperatures, external or internal, fall outside the range of –40 °C to +100 °C. This document is the long overdue update of SAE J1402. Major additions, deletions and changes include the following: Rationalizing all units to the preferred SI (metric) units as directed by SAE. The maximum working pressure for air brake hose assemblies was defined in the Scope as 1 MPa. Reference to applicable publications was added to this update. This update further defines the differences between Types A, AI and AII hoses in both constructions and dimensions. Permanent and field attachable (previously known as reusable) fittings used with Type A hoses are not interchangeable with permanent and field attachable fittings used with Types AI and AII hoses due to construction and dimensional differences of the listed hoses. Tables A, AI and AII were combined into a single Table 1. All other Tables were renumbered accordingly. The hose layline was increased to 600 mm in order to accommodate all the labeling requirements of this standard as well as those from the applicable government regulations. A note was added allowing for the labeling of hose conforming to this recommended practice with the fractional nominal inch size until January 1, 2007. The table listing the radius for high temperature resistance test was deleted. All tests will use the radius listed in Table 1. ASTM No. 3 oil was changed to ASTM IRM 903 oil.