The skate bearing method is like creating a new kind of hybrid inline skates and those skates you used in the 80's with the four wheels (coming back into style, why?!?). ![]() If you are wondering what a bearing bushing is, imagine a cylindrical tube with little balls housed on the inside surface of the tube. Collar bearings, or bushing bearings I believe will have the tendency to receive material within the bearing housing creating a binding effect. When I say clutter free, I mean that the exhaust of sawdust that the CNC will produce will not clog up these bearings. The design is actually very efficient and clutter free. Through much of my research on homemade CNC machines, I found that the mechanism to provide linear sliding is simply the use of an angle ("L" shaped piece of metal), bolts or screws (5/16" at 3/4" in length), nuts (5/16") and standard skate bearings (I use ABEC7/608Z). If you are looking for great linear slide bearings, see here. This tutorial is dated, if you are considering a CNC for your personal use, we would highly recommend purchasing a kit that is very stable from our wide range of machines available. From block bottom to bottom of rail (clearance): 4.6mm.Both: From bottom of rail to top of block: 30mm.Mounting holes distance in the length direction: 40mm.Mounting holes distance in the width direction: 53mm.Mounting hole center to hole center: 60mm.These HIWIN rails pair with the These will pair with our HIWIN linear guide blocks. These HIWIN linear rails are an industry standard when it comes to high quality, low noise, and superior accuracy. Ordering Info: add desired length in inches to cart (QTY 1 = 1"), if multiple lengths are needed, please contact us to let us know. The measurement from the edge to the first hole is 10mm, if you have the uncut version. You can use a #8, #10, or M5 screw for mounting the rail. ![]() The top part of the rail is where the sharper points are located. The mounting configuration is from the top. Linear and curved guides with ball and roller bearings, with hardened raceways, high load capacities, self-alignment and capable of working in dirty. Generally, these HIWIN rails come as a designation of the width of the rail which in this case is 20mm. ![]() The guide way eliminates or minimizes any sideways or up/down motion and only allows to linear motion. The function of this rail is to provide a stable guide way that is extremely rigid and allows that axis of movement to maintain it's position across a linear space. Note: Maximum single length for 1 piece of HIWIN rail is 1400mm or 55.12 inches.
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