This bar on the side of the blocks, with the screw, it´s to adjust the blocks and rails? It´s a must have part?
Hi Jeferson – the bars are used to locate the linear rail carriages and improve the system’s rigidity. It’s a design suggested by HIWIN (the linear rail manufacturer): you can see it on Pg. 13 of their design guide, here: http://goo.gl/Mp0D0t
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