馬達轉動原理
https://www.youtube.com/watch?v=L9MOA705y0I&feature=youtu.be
https://www.youtube.com/watch?v=CWulQ1ZSE3c
https://www.youtube.com/watch?v=CWulQ1ZSE3c
Which Bearing Closure Are Best?
How to choose the bearing closures type? Which bearing Closures are the best? It depends on the bearing application and ambient, the enviroment. Hope the below table can help you! Considering point Open Shield(ZZ) Seal(RS) Closure Materia NA Steel Rubber Cotaminate protection No Good Very good Protection from moisture and dirt No Good Very Good Retain lubrication No Good Very Good Impact by speed No No Yes Water proof No Good Very Good Withstand higher temperature Higher Higher Lower Increasing the temperature No No Yes by Jota Bearing
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