Hiwin Profiled Rail Question

[irving2008]

The main differences are the number of rows of balls, whether they have wipers/seals, the height of the carriage above the rail and the loading they can take, whether the carriages are flanged or plain, and the profile of the rail (some profiles are better than others for sideways or twisting loads).

Since you have little sideways force (no moment due to cutting forces) a relatively lightweight rails such as HG15 or HG20 could be used. HGH15 can support 2tons static and 1ton dynamic (thats the max load for a specified wear in so many km of motion). MD sell a pair of HGH15CA bearings and 2 x 1500mm lengths of HG15 rail for £275+vat

Cheaper still would be the MG12 series, being only a double row of balls its more lightweight but still good for 1/3ton which is easily good enough for your needs... can't find an online price tho.

The other product to look at it the IGUS DryLin

[Normsthename]

Thanks Irving, very helpful!
I was thinking about using 20mm rail so that sounds like it will be the size!
I am thinking about mounting the profile rail onto a 40mm Extrusion and use the T Nuts to hold it in place.
It should be pretty straight bolted to the extrusion
These two extrusions will bolt onto an aluminium plate either side 10mm or 12m thick, not sure yet....

Andy

[irving2008]

I was thinking about using 20mm rail so that sounds like it will be the size!

Andy, your choice of course, but IMHO 20mm would be an expnsive overkill unless you have something else in mind, like mounting a spindle, in which case you need to be thinking larger

We also sell hiwin rails, but if you want something a bit lower cost we also have some ABBA rails that are the same as the HGR15 and HGW15 bearings.
These are slightly lower cost than hiwin.

HG15 works out about £221 + VAT for what Andy needs, so cheaper than MD, but couldnt see the ABBA stuff on the site Gary...