[DeviousMW]

I was able to great a really nice precision THK linear
slide with a 6mm ball screw and 8 inchs of travel
for my Z axis on my Plasma. Now I need to couple
a 1/4" shaft nema 23 300oz stepper to the 6mm shaft.

Any suggestions on what coupler to use?
The 6mm shaft doesnt have a flat spot so I need
a clamp type coupler. Obviously I want virtually zero
backlash to keep the Z axis as precise as possible but
allow a slight bit of misalignment in the coupler.

Thanks,
Mike

[Oldmanandhistoy]

Hi,

Do a search for “Lovejoy couplers” here on the zone.

John

[tpworks]

I believe this might be what you are looking for.

https://sdp-si.com/eStore/PartDetail...784&GroupID=55

https://sdp-si.com/eStore/PartDetail...50&GroupID=981

[will gilmore]

www.mcmaster.com search for "Helical Beam Coupler"

[DeviousMW]

www.mcmaster.com search for "Helical Beam Coupler"

These are perfect!.. I've never seen mm to inch couplers. And the prices are
reasonable for this type of coupler. Most quote I was getting were near a $100. $30 is much better.

Thanks,
Mike