The SKF 4309 ATN9 is a Deep Groove Ball Bearings, with a bore diameter (d) of 45 mm, an outer diameter (D) of 100 mm and a width (B) of 36 mm, and a unit weight of 1.25 Kg. Supplied by Wuxi Andge Bearing Co., Ltd. (AndgeBearing), a bearing manufacturer and exporter based in Wuxi, Jiangsu, China — OEM and custom bearings welcome, RFQ replied within 30 minutes on working days.