Browse Standards J700_202011
Current REVISED 2020-11-12

Upper Coupler Kingpin - Commercial Trailers and Semitrailers(STABILIZED Jul 2011) J700_202011

This SAE Standard applies to upper coupler kingpins for commercial trailers and semitrailers in the unladen condition. See Figure 1. A 90 degree ± 1 degree angle extends (in all directions) from the centerline of the kingpin to the upper coupler plate surface within a 48.26 cm (19 inch) radius. The upper coupler plate surface should not bow downward (convex) more than 0.635 cm (1/4 inch) within a 48.26 cm (19 inch) radius or more than 0.3175 cm (1/8 inch) at a radius of 25.4 cm (10 inches) from the kingpin. The upper coupler plate surface should not bow upward (concave) more than 0.15875 cm (1/16 inch) within a 48.26 cm (19 inch) radius. (See Figure 2.)
J700_202011
2020-11-12
Latest
Revised
J700_201107
2011-07-13
Historical
Stabilized
J700_200104
2001-04-27
Historical
Reaffirmed
J700_198506
1985-06-01
Historical
Revised
J700B_197001
1970-01-01
Historical
Revised

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