LBD40UUOP NB 40mm Slide Bush Ball Linear Motion BearingLBD40UUOP Type Open Seals on Both Sides: Slide Bush Made in Japan: NB Linear Systems Nippon Bearing Linear Systems LBD40UUOP Linear Slide Bush, bearing is open, It is seals on both sides, it is Retainer material is resin, bearing is a high accuracy grade linear bushings, series mainly used in the USA, NB brand (Nippon Bearing Linear Systems), made in Japan. Item: LBD40UUOP Bearing Type: Linear Slide Bush Retainer Material: Resin Shaft Diameter: 40mm