SMS50GUU Stainless Steel Anticorrosion: Slide Bush Made in Japan:NB Linear Systems Nippon Bearing Linear Systems. 50mm Stainless Steel Anticorrosion Linear Slide Bush, The retainer material is resin, It is seals on both sides, SMS50GUU 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 SMS50GUU 50mm Slide Bush Ball Miniature Linear Motion Bearings 19662" is in sale since Friday, December 6, 2013. This item is in the category "Business & Industrial\Automation, Motors & Drives\Mechanical Power Transmission\Bearings & Bushings\Other Bearings & Bushings". The seller is "irvineman" and is located in Anaheim, California. This item can be shipped worldwide.