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Re: ER Collets
It seems to me it is impossible to tell if products sold by European sellers are Chinese, or not, unless you ask. Products sold in the USA must be labeled as to country of origin, apparently, as all that I purchase are.
I have purchased from Chronos in the UK, and I am quite certain what I purchased were sourced either from China or India, although none were identified as such. That said, Chronos obviously writes the specs for the items, as quality and tolerance were quite good. My purchases include M12x1 chucks and a rotary table.
Same holds true for GGTools, except the source is not obvious. I purchased a Unimat DB/SL tailstock ram from them with a built-in ER11 collet holder, and the quality is quite good.
So whether made in Germany or China is besides the point (at least from a practical position), if Chronos or GGTools controls the quality. Of course, there always may be other considerations besides the purely practical, but for Unimat accessories, your choices of sources is a bit limited.
Martin P.
-----Original Message-----
From: johnhutnick
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<Snip> Can I have some confidence that these are made in their countries of origin, or are they just Chinese at marked up prices?? Also, it seems nothing is in the US.
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Re: U100 Motor Overhaul
Thanks Cary,
Both of mine are noisy, one has had very little use, but the busy one is really noisy, but not quite to ear plug level yet. I have swapped them out and the "noisy" one is now on the bench ready to be dismantled. The fan end has two screws, the brush end has four. I will start on it today and take lots of pictures as I go. It cannot be any more difficult than many similar sized motors. Wish me luck. When all is done, I may publish the pictures in a PDF doc for the files. It may help others, I suspect that most of us are not afraid to tackle such repairs/overhauls. Peter B. |
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Re: U100 Motor Overhaul
Thanks Neil for the suggestions, but I don't need to have someone do it for me; I've been doing electrical overhauls/repairs since the 50s. I was hoping someone had an exploded view or parts list they would care to share. I seem to recall seeing similar posted in the group previously but cannot find anything. Maybe I am hallucinating.
Do you know of a source of brushes if I need any? |
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Re: U100 Motor Overhaul
¿ªÔÆÌåÓýIf you want someone to do it for you, try a place that repairs sewing machines. If you want to do it yourself, check your local library for books on electric motor repair. And of course YouTube etc. Neil On 3/31/2019 11:29 AM,
pbrixey41@... [UNIMAT] wrote:
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Re: U100 Motor Overhaul
The only thing EMCO or Edelstaal printed, that I am aware of was an exploded view of the U90 and the single speed U7750. I have a U100 but have not used it. How you get to the brushes I don't know. Do you put a drop or two in to the bushings now and then? The U100 motor has the advantage of 100% duty cycle because it has a fan. Down side is they are noisey. Inspect the cases to find the way inside. If I recall there is now exterior brush access. I don't think brushes for the U100 were ever offered. Cary |
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U100 Motor Overhaul
Both of my Unimats have U100 motors on them. One is getting noisy. If I remove the belt and rotate the shaft by hand it emits a ticking noise. Can anyone point me to some instructions to enable me to dismantle and overhaul the motor. I did a search in the files and conversations but could not find anything. I suspect it may be brushes. Any hints and tips or diagrams/photos would be helpful too. I am not a novice to working on electrical tools and devices. Thanks in advance, Peter B. |
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Re: ER Collets
Bill Williams
¿ªÔÆÌåÓý??? ??? Thanks Jeff. Well reasoned and well explained!? Bill in
Boulder CO USA On 3/30/19 7:40 PM,
jeffklender2003@... [UNIMAT] wrote:
Bill |
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Re: ER Collets
The RC price also is including the 17% Value added tax. You do not pay that.? So 79 euro would be minus 17% plus shipping. I emailed them two year ago when I ordered my two holders and the responded right back.? The shipping cost a bit. I think it was because they had to send it to France 1st and then to the USA. It think that they made the holders themselves. Excellent quality.
Jeff |
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Re: ER Collets
So far I see RC has the M14 collet chuck at 79 euro.? They are Luxembourg.? Then I see GG(Germany) also recommended, charges 49 euro, but their Ebay listing says does not post to US.? Is one collet chuck 30 euros better, even if I apparently cannot buy one?? Can I have some confidence that these are made in their countries of origin, or are they just Chinese at marked up prices?? Also, it seems nothing is in the US.
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Re: ER Collets
Bill Williams
¿ªÔÆÌåÓý??? ???? As my Uni is an early one with the M12x1 spindle this is
academic to me.? Bill in Boulder CO USA On 3/30/19 8:07 AM,
johnhutnick@... [UNIMAT] wrote:
Based on the discussion that I have seen, I can conclude that the only sources for a M14x1 collet chuck are someone like "GG" in Germany, and no one here knows of any US source. |
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Re: ER Collets
?Keith
?I recently had to make a threaded adapter for a 1967 Honda Carburetor cable. Threaded 8mm OD x threaded 6mm ID in aluminum. The ER16 chuck with a 8mm collet worked great. I used a section of rod about 1 1/4" long, trued it up, used a die to cut the OD threads, center drill, drilled to proper size and then used a tap to tap the ID threads, cut off to length and it fit perfectly.? ?Jeff |
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Re: ER Collets
One thing to bear in mind is that the capacity through the headstock is a little over 6 mm, and ER16 goes up to 10 mm, so why go for anything bigger? The holders already suggested should be OK. You will lose accuracy if you have to machine the holder yourself - get one that fits as supplied. If you are looking at shipping from Europe also look at GGtools. They offer ER16 holders specifically for the DB/SL, but they don't always have them in stock. I assume they make them in small batches. At the moment they have them for the U3, but I don't see any for the DB/SL: Keith |
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Re: ER Collets
¿ªÔÆÌåÓýI got a clone ER-16 collet chuck and nut, and a clone Imperial collet set in various sizes from 1/8¡± to 3/8¡± for my SL.? I don¡¯t remember the sources, other than the fact that I found them on Ebay, but not at the same place. ? Other than having to remove the first few mm of 12x1 threads in the chuck to clear the shoulder on the spindle, the chuck has worked fine for what I¡¯m doing with it as a hobbyist.? I know that you get the accuracy you pay for, but I also know that I only pay for the accuracy I really need. ? Don ? ? From: UNIMAT@... <UNIMAT@...>
Sent: Thursday, March 28, 2019 9:02 PM To: UNIMAT@... Subject: [UNIMAT] ER Collets ? ? ??? ??? Looking for recommendations for ER collet size for my SL-1000
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