Below are useful questions when assessing Schedule B and ECCN determination. While most of them would belong under EAR99, a small minority may be subject to stricter BIS controls. Schedule B What type of bearing is it? (ball w/ integral shaft; ball unground; ball thrust; ball linear; ball angular; ball radial; tapered; spherical; needle; cylindrical) ECCN (2A001) If the bearings is of Radial Ball Type, please advise on each point [yes / no answers only!] whether it is / it has: (1) tolerances specified in accordance with ISO 492 Tolerance Class 2 or better (or ANSI/ABMA Std 20 Tolerance Class ABEC-9, or other national equivalents) and; (2) inner ring bore diameter between 12 and 50 mm; (3) outer ring outside diameter between 25 and 100 mm, and a width between 10 and 20 mm; (4) tolerance specified in accordance with ISO 3290 as grade 5 or worse; (5) made from monel or beryllium; (6) tapered roller bearing; (7) active magnetic? (2A991) If the ball bearings / solid ball bearings have the tolerance specified by the manufacturer in accordance with ABEC 7, ABEC 7P, or ABEC 7T, or ISO Standard Class 4 or better, please advise on each point [yes /…
Published June 23, 2008 by Yuri Starikov
