4th Axis Build

Lcvette wrote: The united I've been looking at are different, they appear to be a housed unit with a cross t roller bearing

Those sound perfect.

That is encouraging to hear it's working out!! Do you know which model you used in the 4th build? I am looking at the 25-100 servo actuator units which have a torque rating of 75Nm and have a 100:1 ratio. They are hollow core type units that direct drive the harmonic drive with a built in encoder., they are reasonably affordable considering they come with the servo and drive, I've found then sound $500 from time to time in great shape and as mentioned have the cross roller bearing support which will make the rest of the design a little easier to work with and the over all length of the unit more compact.

I need to do some further research on appropriate drives for them still, some are listed but I'm not sure if they are CNC type of more automation type drives.

Very cool gadgets to be sure and your build is very impressive! Do you have any YouTube videos of your build in action, would love some inspirational viewing media!!

Chris

andypugh wrote:

Lcvette wrote: The united I've been looking at are different, they appear to be a housed unit with a cross t roller bearing

Those sound perfect.

Yeah that's what I'm thinking too! Here is one of the units in considering:

The FHA look like they make a rotary axis almost too easy.

andypugh wrote: The FHA look like they make a rotary axis almost too easy.

I know right! That was exactly what I thought where I saw it.. I just received a step file of the FHA 25-100 e250 which looks perfect for an 8" rotary table build. If you would like a copy let me know! Email Lcvette1@yahoo.com.

Chris

In my research I ran across this and believe that's exactly what he's doing is using a cross roller harmonic drive and bolting the tally directly to it..