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  1. #19
    Quote Originally Posted by Boyan Silyavski View Post
    I never understood the significance of closed looped steppers at that price point. Plus i pointed already a couple of times in forums where cheapest servos could be bought.

    400w AC servo motor could be bought for ~180$ together with drive. JMC motion. 60ASM400 +MCAC808 , not sure of actual prices so have to check. Also they sold the closed loop stepper 3nm motor and 2HSS86H driver for around 130$ . that prices were when you buy 4x. Obviously a PSU must be fashioned. That includes cables so price was great.

    So forget about the Leadshine for the moment, there are other players. That was an year ago. Now may be even sth else new on horizon.

    Seems to generally be about $220-250 (before postage) to source from china for those? Comes in at around $100 more than the leadshine closed loops per axis from the same sources (which vary from around $120-170 before postage), certainly not bad if they work well.

    They are definitely on the cheaper end of what I've seen for servos (400W I've always seen more for $450 ish), are they what you are using? Could be tempting to try out at that price in the name of... science...

    Jazz - we'll have to agree to disagree on the usefulness of the closed loop in terms of error, I'm still of the opinion that for certain applications it is nice to have even if not essential. I believe it worked out at around £130ish per axis for me all costs included (although granted the dollar was significantly weaker back then pre-brexit) so a premium of about 40 quid per axis over the setup you are speaking of.

    I just want to be clear though, I have absolutely no doubt that the setup you are speaking of is fantastic... I'm sure had I gone with those I would be equally happy. Yet again I am just sharing my experience that I have been very happy with the performance of my easyservo setup, it's up to the individual to decide what features they particularly value.
    Last edited by Zeeflyboy; 29-03-2017 at 06:47 PM.

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