Coupler between stepper and slide ball screw

[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]

Originally Posted by will gilmore 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