SM80GUU-OP Type Open Seals on Both Sides: Slide Bush Made in Japan:NB Linear Systems Nippon Bearing Linear Systems. SM80GUU-OP 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. Number of Ball Circuits: 5. The item "NB SM80GUU-OP 80mm Slide Bush Ball Linear Motion Bearings 19570" is in sale since Friday, November 29, 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.