Product Descriptions
| SWF4 Round Flange Type NB Linear System Nippon Bearing Linear System Made in Japan |
| SWF4 linear motion ball bushing/bearing, the inner diameter(bore) is 1/4" 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.
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