Episode #125 of the Stack Overflow podcast is here. We talk Tilde Club and mechanical keyboards. Listen now

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The casing is very thin and its purpose it to keep the bearing's balls in place, protect them from dust and grime and to hold in some lubricant. It doesn't share any load. The hinges are very durable as the friction load is much less than with a regular hinge. They are also quieter. Below are a few diagrams on what might be inside a ball bearing hinge: ...


The casing is just to stop the balls falling out. It doesn't take any of the vertical load. Inside the case there is a series of ball bearings arranged around the hinge pin. The ball bearings take all the load. When the hinge is turned, the balls rotate. The result is that there is no sliding of metal surfaces over each other, so there is very much ...


Indoors? No they won't corrode. Zinc looks different than stainless which is more dull, so just get the right screws. It looks bad, I've done it before on accident. Commercial door hardware companies will have boxes of them.


Make the axle of the wheel intersect the axis of rotation of the door through the hinges.

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