Monday, 14 November 2005

Project - CNC Mill Bearing Blocks Part I

The bearing blocks are what we mount the bearings in to stop axial play in the ballscrew. We need one for each axis.


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You can buy them, but they are mega expensive. I bought some angular contact bearings from eBay and decided to make my own blocks.


The blocks contain two opposing angular contact bearings separated by a small spacer - this allows them to be preloaded to stop axial play in the ballscrew.


Drawings can be found here.


I cut some rough size blocks on the bandsaw and I am facing them to size in the mill.


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Heres what one looks like after it has been bored for the bearings on the lathe and faced to length. I am getting ready to drill the mounting holes and the holes for the bearing keep plate that screws to the front.


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Finding the edges with an edge finder.


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Holes drilled.



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Back on to the lathe now - part is mounted on a stub mandrel for turning away the bits that don't look like a bearing block.


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One down - two to go...


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Stay tuned for the keep plates and final assembly.

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