SM80 Type:Slide Bush Made in Japan:NB Linear Systems Nippon Bearing Linear Systems. 80mm Linear Slide Bush, bearing is a high accuracy grade linear bushings, series mainly used in the USA, NB brand (Nippon Bearing Linear Systems), made in Japan. Number of Ball Circuits: 6.The item "NB Systems SM80 Bore 80mm Slide Bush Ball Bushings Linear Motion Bearings Japan" is in sale since Thursday, March 01, 2012. This item is in the category "Business & Industrial\Heavy Equipment Parts & Accs\Manufacturing Equipment Parts\Bearings". The seller is "irvineman" and is located in Anaheim, California. This item can be shipped worldwide.