Using a 5Pro 4x4 with 65mm VFD Spindle. I was about 90 minutes into a carve of some parts (10 minutes to go) and a cap head screw fell into the path of the machine and ruined one of the parts I was cutting (pics of screw attached).
I monitor my cuts so I was right there to hit pause and stop within about 3 inches of travel in the cut. But, it knocked the axis off track so the part I was cutting is ruined. I’ll make another.
BUT, I cannot figure out where the cap head fell out (from). I have examined the HDZ as best I can, but there is no real explanation of what individual parts are and where to find these bits.
When I first bought the machine, one fell out of one of the lower linear bearings HG-15 (I think they’re oil ports - picture attached).
I just had to keep looking with a a camera and flashlight until I found an open threaded hole. It’s a teeny screw - hex wrench to install - and only about 1/8" to 3/16" long.
Of course, the HDZ comes assembled and there is nothing to tell you where you should check/tighten screws when assembling or before use. Now a second one has dropped from somewhere.
I have not found any diagrams or drawings that tell me where this screw came from. I also need to know what it is to replace it, since it was chewed up - along with a #201 bit.
I have looked at the bottom of the two lower linear bearings since that’s where I found the vacancy after the first one several months ago and both have the screws in place.
Anyone know where the screw came from? Anyone know what else I should check for tightness (other than always check all bolts and screws - since this one is not from an obvious place)?
Any help on other locations to find a hole? Both of the lower blocks have screws in place. I cannot see where there are any openings. Is there a diagram or something that engineering can share where those M4 pan head screws are used?
Can I remove the 4 bolts from the face of the HDZ holding the block in place and lift it up/out to replace the screw and then reinstall it without any trouble?
Just to close the loop for anyone who is interested…
I ended up getting hold of customer support today. The short answer is, yes, remove the spindle and HDZ plate to PARTIALLY remove the linear block to return the oil drain screw/plug to its place and then reassemble. I say PARTIALLY because they say DO NOT let the linear block leave the rail. I was thinking of pulling the 4 cap screws holding it to the plate, sliding it off the rail and returning the screw to its home. BUT you should not remove the block from the rail. So, I slid the plate to the bottom of the rail, loosened the block and moved it up to the top of the rail - still on it - and replaced the screw.
Here’s the fun part. The screw that fell out from the linear block is an M4 as Will said. But, there is more. The stock screws are M4-0.7 x5mm. 0.7 is the pitch of the threads and 5mm is the length of the threaded portion (below the cap). Good news for me is very few places have them - no one around me so I would have had to wait days for shipping. CS thought the 6mm version I could get nearby at the hardware store should have clearance inside the block, so I tried it. It worked.
Anyone following, now you know. CS has a couple .pdf files with the steps and pictures they can send you if you have the problem I did.
