02-02-2012, 10:42 PM
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| | | Join Date: Feb 2011 Location: USA
Posts: 170
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Originally Posted by LarryE  What is the advantage if any in useing the Low Profile Bearing Block for the Z-axis?
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Larry,
Not sure what advantages or disadvantages would be, without more specific information. "Low Profile"- are you referring to the recirculating ball bearing type of bearing blocks? (With rails which are shaped similar to the letter X when viewed from one end)? Or the type which simply ride along tubes shaped similar to the letter O when viewed from the ends? As far as "Low Profile" the advantage is to provide the most rigidity in the mounting method used for the Router (or whatever tool you are mounting on the Z axis). As this will be a fairly heavy part of the machine, which must be able to respond very quickly to the up and down movements. And the increased stress which is introduced to the entire assembly, as the tool plunges into the work piece. The advantage of the Low Profile, is to cut down on the unsupported weight of the Router mount that will be suspended by these bearings. The further away from the rails that the Router is mounted, the greater the stress will be on the linear rail/bearing assembly used. The Low Profile, keeps this distance as short as possible.  |
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