6906 SKF New Single Row Ball Bearing:6906 SKF New Single Row Ball Bearing: Amazon.com: Industrial & Scientific6906 2RS SKF Thin Section Bearing | Popular Metric BearingsThe 6900 Series is also known as the 61900 Series. The 6900 series is one of most common bearings found on mountain bike hubs. Found In The Following 
6906 - SKF Deep Groove - Quality Bearings Online LtdProduct: 6906 SKF Deep Groove Bearing |Brand: SKF |Size: 30x47x9 |In Stock |All Orders Shipped via DHL |Quality Bearings Online LTDSKF - NA 6906 - Motion IndustriesNeedle Roller Bearing - 30 mm Bore, 47 mm OD, 30 mm Width, Open.  Machined Bearing with Inner Ring.  INA (Schaeffler) NA6906Needle roller bearings, with machined rings, with  Needle roller bearings, with machined rings, with an inner ring - NA 6906  NA 6906. Popular item. Dimensions. d, 30, mm. D, 47, mm. B, 30, mm. F, 35, mm