Review on SBR20 Aluminum Linear Bearing with UU Design by Sean Davis
Smaller than expected, the best linear ball bearings
They are poorly made. The lack of precision gives that "two thumbs down". They slide worse on the SBR20 rail than on a standard linear bearing. Also, there are no stops on the block to prevent the inner cylinder from rotating. This could potentially block the linear movement and damage the rail if/when it rotates more than 10°.
- Smooth movement, low friction, high performance and long life
- Some small things
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