Techno Routers (z-axis)

[joejared]

Recently, I rebuilt a Z-axis on my router, which has a p/n of 2300100400, and internally had a weird thrust bearing arrangement. I ended up modifying the thrust bearing assembly to use the same bearings I'm replacing X and Y with, which is the 7200B bearings from VXB, and created a new motor mount. The only remaining task will be to make a 1/2" spacer for the motor. In the mean time, I'm using simple standoffs.

[cnc-microcut]

Wow! 3648px × 2736px
A little bit oversized for my 17".
Can see a lot, but don´t know what it is :-)

[ger21]

So far I've waited a minute to see your finger.

[joejared]

Originally Posted by cnc-microcut Wow! 3648px × 2736px A little bit oversized for my 17". Can see a lot, but don´t know what it is :-)

It's about refitting the z-axis to use true angular contact bearings instead of the kluster kludge that techno implemented. Originally, they used 2 spherical bearings and washers. It's amazing how they spared no expense to provide a decent 5mm pitch ball screw and wasted all that hard earned investment on cheap radial bearings. The replacement bearings, ironically cost only $6.00 more per axis each but in this case, it was likely cheaper than the original, but correct.

[joejared]

Originally Posted by ger21 So far I've waited a minute to see your finger.

I reduced the images to 1024x768. the original files are still in the same directory, except that it's nameo.jpg now.

[ger21]

Much better. thanks.

[Pplug]

What version of techno router do you own and have you converted the controller to run Mach3? I own a LC4896 and am looking at replacing the techno controller so any tips would be appreciated.

[joejared]

Originally Posted by Pplug What version of techno router do you own and have you converted the controller to run Mach3? I own a LC4896 and am looking at replacing the techno controller so any tips would be appreciated.

The one I'm using actually has an ISA bus, but I wrote my own interface for linux for it.

I have some videos on YouTube and most are referenced in the operations manual.

This is my operations manual

It's actually a late 20th century machine all with double bearing slides, 4 shafts per axis. More images are online at http://www.oretek.com/images/ in the more recent folders.


I've seen the LC4896 machine as one of my customers uses it , and odds are, it has the same z-axis defects. I'll know for sure on Monday, but odds are, if they're using spherical bearings, they're not really thrust bearings, and not too hot on tolerances either.