Servo Purchase Recommendations, Yaskawa?

oh, for spindles... it gets tricky, cause the prices and the product functionality are all over the place. rebuilds can cost more than new cartridges. also, us tarrifs have affected bearings - NSK had doubled in price so i assume its a 100% tarrif.

microlab is one reputable maker in taiwan i know of. belt spindles from them will be between 1-3k depending on speed, gripper type, cooling, bearing arrangement etc. They used to quote about a month lead, but in covid times, who knows.

In the US, setco makes high end "stock" spindles, I talked to them at cmts and they said they had a Taiwanese facility and could offer competitively priced spindles, so, might be worth calling them. because they are "stock" they might have a fast lead time on one that fits your machine.

For the spindle I ended up going with the rebuild. I was able to get a slight speed increase which was one of my concerns and something that Northland Tool was really helpful working with me on. Yeah it cost more but I didn't have any unknowns of installing a spindle built to order with configuration of the power drawbar, etc.

I did see microlab spindles but never reached out to them. I did go through almost the entire design process with Royal spindle who was very helpful but was a bit unresponsive as I was a single unit purchase. What got me hung up was shipping terms and import/export. That and they wanted the spindle to run a chiller. That wasn't impossible but added another layer. I did reach out to Setco and got no response. 

Thank you for all the info about Delta and Yaskawa. The Yaskawa/china packages make sense and will probably be enough to keep me away from them. I started some research on the Delta B3 and like what I see so far. Been searching the forums for examples used with LCNC and haven't found any bad experiences. Seems like they tune very well in analog mode. 

Your comment about DMM is spot on. While they have been very responsive to questions anytime I bring up the possibility that their drives are not operating correctly (with proof) they defer and see its impossible and blame LCNC/Mesa hardware. I should have done more research into them being used in LCNC with analog control. I still can't find anyone who has used them successfully that way. They do work great in position mode and open loop but the encoder feedback out of the drive is slow to respond. 

I really appreciate your help and insight.

Since this came up again and i suppose someone from DMM does read this forum (if they do not they should be ashamed and take some lessons from PCW), i really think it is about damn time they send a set of drive/motor to me or Andy or PCW, or even better to all 3 of us.
The bad rep they are getting is costing them much more than 3 sets.
P.S.
Just in case they ever decide to send something my way, i do not do NDA, i do not care about hurting feelings, and i sure as hell do not respond gently to someone suing me for whatever.

I will say analogue on linuxcnc is not ideal. a handful of people have told me they have it working fine, but rarely on what i would call a high performace machine, and many others never got it to behave. Linuxcnc has no jerk control, and instant changes in acceleration might be causing the drive to respond poorly (resonance and over correction). in short, i prefer a blind pulse system where the drives auto tuning and filtering can work its magic over the way linuxcnc and analogue behaves right now.

The good thing about delta (drive model -L) and yaskawa and several others is that you can use pulse or analogue. so if analogue doesn't work out well, just switch over.

I also looked at Delta, Panasonic and Yaskawa. I decide to Delta. Reason: The manual and circuit diagram are easy to understand. Parameters are well explained and the tuning software convinced me. Search for delta servo tuning software videos. It's really 10 minutes and the thing works. Lastly, measure the resonance and set the filter. Almost like the professionals. And if you have an external measuring system, you can connect it directly to the A2 driver.
Good to know are P44 + P45. Standard setup are 16 + 10 
=160000 steps/rev. Little high for hobby machine...

I don't have a high end machine. It's a 1996 that's getting a retrofit. Will deltas have the same issue with jerk on a large old heavy machine with a lot of inertia? I was looking at the 1.5kw. Would the same behavior be observed in pulse with closed loop to LCNC ( I don't see why that would matter but I don't have experience).

Tommy I would gladly send you a dmm set if you weren't so damn far away. I would be curious to see what you could do. Still not sure what I will do with them when I take them off.