Amazon.com: Iron Sealed Ball Bearings, Radial and Axial Load 20PCS Miniature Deep Groove Bearing Lightweight with Reasonable Speed for Linear Motion Equipment(627 Iron Sheet Seal) : Industrial & Scientific
Axial and Radial Turbines : Moustapha, Haney, Zelesky, Mark f., Baines, Nicholas C., Japiske, David: Amazon.de: Bücher
Deep Ball Bearings, Radial and Axial Load Rubber Sealed Bearing Moderate Speed 10PCS Easy to Replace for Linear Motion Equipment 6301 Rubber Seal: Amazon.com: Industrial & Scientific
Iron Sealed Ball Bearings, Deep Bearing Easy to Install Radial and Axial Load for Linear Motion Equipment 625 Iron Sheet Seal: Amazon.com: Industrial & Scientific