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SWK40:Made in Japan:NB Linear Systems
Square Flange Type
Nippon Bearing Linear Systems
SWK40 2 1/2" Bore linear motion ball bushings/bearings, the inner diameter(bore) is 2 1/2" inch dimensions with steel retainer, bearing is a high accuracy grade linear bushings, series mainly used in the USA, NB brand (Nippon Bearing Linear Systems), made in Japan.
[BO] NB SWK40 2 1/2" inch Ball Bushings Square Flange Linear Motion :: Kit8103 :: 2 1/2 inch Linear Motion Systems