Inch Deep Groove Ball Bearing R4 1.ISO9001:2008 2.High precision,long life,low ... technology 4.Open;Seal;Shiel Inch Deep Groove Ball Bearing R4 Model No: Inch Bearing R41.Certificate: ISO9001: 2008;ISO14001: ... 1:About the products: Product Name: Deep groove ball bearing R4 Dimension And Parameters Bore (d)mm inchOuter diameter (D)mm ... : http://www.ballbearingcorp.com Inch Deep Groove Ball Bearing R4