Yes, linear servo motors are amazingly expensive. If someone starts making reasonably priced linear servo motors I think they might be overwhelmed with demand.
Unless you need really fast rapids, or extreme precision, I don't think they can be justified in most cases. The machine I setup before with Parker drives was scary fast. I was really concerned that if I screwed up the tuning that I might drive the carriage right off the end of the rails due to an impact. Ironically the machine runs very slowly, 5 inches per second is about it's top speed. But it is very reliable, they like that, so they associate the linear motors with being reliable. But for the price, those linear motors should be reliable! Dave On 6/18/2011 3:52 AM, Viesturs Lācis wrote: > Ooo, Kollmorgen! > They are definitely in the high end of pricing. > 1,5 years ago I asked TGDrives to provide me a price quote for linear > motors for my waterjet machine. They offered 2 versions - more > powerful and less powerful. One was 20K Eur, the other was 12K Eur for > 2 pieces of 3 m travel and 1 piece of 2 m travel. > If You really want, let me know, I can look up model numbers to see, > what kind of motors exactly did they include in the offer. > > Viesturs > > 2011/6/18 Dave<[email protected]>: > >> I just saw linear actuators also.. >> >> I'm looking for something like this but in a complete assembly along >> with linear square rail bearings etc. >> >> http://www.kollmorgen.com/en-us/products/motors/direct_drive_linear_motors/il_series_ironless/il_series_ironless/ >> >> I doubt that these are much cheaper than Parker linears and they don't >> come assembled. >> >> Dave >> >> >> On 6/17/2011 1:49 PM, Viesturs Lācis wrote: >> >>> But there are no linear motors in Tolomatic page... Do I understand >>> correctly, that John is using Tolomatic's linear actuators with >>> Panasonic servo motors? >>> >>> Viesturs >>> >>> 2011/6/17 John Thornton<[email protected]>: >>> >>> >>>> I've never priced them... I get my Tolomatic and Panasonic from Fluid >>>> Power in St. Louis. >>>> >>>> John >>>> >>>> Dave wrote: >>>> >>>> >>>>> Thanks John, >>>>> >>>>> I've never heard of Tolomatic so I will have to look them up. >>>>> >>>>> Have you ever priced any Yaskawa linear servo motors and drives? Are >>>>> they in the same price ranges as Parker? >>>>> >>>>> Dave >>>>> >>>>> On 6/17/2011 7:40 AM, John Thornton wrote: >>>>> >>>>> >>>>> >>>>>> I use Tolomatic on all my linear applications, excellent service, >>>>>> quality components and much more cost effective than Parker. For >>>>>> industrial applications I pair their slides with Panasonic servos and >>>>>> drives which is usually controlled with a PLC. >>>>>> >>>>>> John >>>>>> >>>>>> Dave wrote: >>>>>> >>>>>> >>>>>> >>>>>> >>>>>>> Has anyone found a source of less expensive linear servo motors? >>>>>>> >>>>>>> I have a client who really wants to use some linear servo motors to >>>>>>> retrofit some machines. He doesn't really "need" them but he has some >>>>>>> Parker linear servo motors that I installed a couple >>>>>>> of years ago and he really likes them but they can't afford to pay the >>>>>>> big bucks for more Parker linear drives. These are two axes machines >>>>>>> that look like lathes. >>>>>>> >>>>>>> The one long motor (Z axis) has about a 40 inch stroke and 50 lbs of >>>>>>> force. >>>>>>> The other short motor (X axis) has about 30 lbs of force. >>>>>>> >>>>>>> I believe that these two motors and drives were in the $12,000 range a >>>>>>> few years ago. >>>>>>> >>>>>>> The motors I used before were ironless, I believe they were specified >>>>>>> that way to eliminate cogging since this is a very low speed >>>>>>> application. >>>>>>> >>>>>>> Thanks, Dave >>>>>>> >>>>>>> >>>>>>> ------------------------------------------------------------------------------ EditLive Enterprise is the world's most technically advanced content authoring tool. Experience the power of Track Changes, Inline Image Editing and ensure content is compliant with Accessibility Checking. http://p.sf.net/sfu/ephox-dev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
