The INA SD45X52X4 is a Ball Bearing Units, with a bore diameter (d) of 45 mm, an outer diameter (D) of 52 mm and a width (B) of 4 mm. 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.