SAE J 700:2011-07-13

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 in) radius. The upper coupler plate surface should not bow downward (convex) more than 0.635 cm (1/4 in) within a 48.26 cm (19 in) radius or more than 0.3175 cm (1/8 in) at a radius of 25.4 cm (10 in) from the kingpin. The upper coupler plate surface should not bow upward (concave) more than 0.15875 cm (1/16 in) within a 48.26 cm (19 in) radius. (See Figure 2.)

Author	SAE
Editor	SAE
Document type	Standard
Format	File
ICS	43.040.70 : Couplings 43.080.10 : Trucks and trailers
Number of pages	4
Replace	SAE J 700:2001-04-27
Set	JPAKS10U-10
Year	2011
Document history	SAE J 700:2001-04-27
Country	USA
Keyword	SAE 700;SAE J700;SAE J700;SAE J 700