Trebor | 02/09/2013 14:38:00 |
13 forum posts | I'm after a set of Er40 collets and not sure which ones to get. Rdg do sets, Gloster tools, Chronos have sets along with Vertex ones which are supposed to be better quality. Any advice welcomed. Will also need to make a Lathe er collet chuck. Could you tell me a good place to buy enough EN8 bar to do the job. |
Russell Eberhardt | 02/09/2013 14:47:20 |
2785 forum posts 87 photos | I've bought some er32 collets from these guys and they seem as good as any: **LINK** They do also sell ER40 size. Russell. Edited By Russell Eberhardt on 02/09/2013 14:48:32 |
Jo | 02/09/2013 15:33:46 |
198 forum posts | For quality look for the value they quote as the TIR value: the smaller the better, 0.0002" is good. If they don't quote it. don't be surprised if it is not very good. Jo |
Trebor | 02/09/2013 15:45:17 |
13 forum posts | Would that be a total run out figure ? |
Trevor Drabble | 02/09/2013 16:04:28 |
339 forum posts 7 photos | Suggest you give Dave of D&J Workholding **LINK** a call. Very helpful chap. Most certainly not the cheapest, BUT excellent German quality options and massive range incl ER 40. They also do many types of holders including parallel and MT. Suggest better to buy than to start making. Edited By Trevor Drabble on 02/09/2013 16:08:05 |
Trebor | 02/09/2013 16:15:13 |
13 forum posts | That link flashes up as a phishing website Edited By Trebor on 02/09/2013 16:16:50 |
Gone Away | 02/09/2013 16:38:18 |
829 forum posts 1 photos | Not really. The link expands to http://[email protected] which seems to be an employee login to the site and demands credentials. Try it again without the ' sales@ , part |
Trebor | 02/09/2013 16:42:33 |
13 forum posts | Try this one http://www.djworkholding.co.uk/ |
Stephen Benson | 02/09/2013 19:44:54 |
203 forum posts 69 photos | Another vote for CTC Tools very good quality excellent price certianly good enough for clock repair they take a while to arrive a couple of weeks normally but then they are coming from Hong Kong. |
John Hinkley | 02/09/2013 19:46:25 |
1545 forum posts 484 photos | Trebor, I'll second Russell's suggestion. I bought an ER32 MT3 collet chuck and ten collets from them in July. Cost me £66.25 including courier delivery. They arrived on my doorstep (in France) four days after placing the order. I assume they'd take the same for the UK, if that's where you are (no profile). If you email them, they'll send it by post, I imagine - but it'll take a lot longer. The ones I bought weren't the low runout jobs but their precision far exceeds what I can acheive with my experience on my equipment! John
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Gone Away | 02/09/2013 21:23:57 |
829 forum posts 1 photos | I too have dealt with CTC for some years now .... all of it good. If you prefer, you don't have to work through eBay - you can deal direct through their website |
Rik Shaw | 02/09/2013 21:27:40 |
1494 forum posts 403 photos | Bought ER25 collet set from RDG, very accurate and a good price Rik |
John Haine | 02/09/2013 22:08:54 |
5563 forum posts 322 photos | I bought mine from http://www.colletsdirect.co.uk/ |
Trebor | 03/09/2013 12:15:40 |
13 forum posts | Thanks for the advise chaps, I still can't decide which ones to go for . I,m hopeless. |
Trebor | 03/09/2013 12:18:06 |
13 forum posts | Posted by Jo on 02/09/2013 15:33:46:
For quality look for the value they quote as the TIR value: the smaller the better, 0.0002" is good. If they don't quote it. don't be surprised if it is not very good. Jo I,m unsure what the TIR stands for, is it a total run out ? |
Keith Long | 03/09/2013 12:39:26 |
883 forum posts 11 photos | TIR = Total Indictated (or Indicator) Runout ( I always knew it as Total Indicated Runout) It is the absolute value of the difference between the high and low reading as seen (usually) on a dial indicator, but could be measured by other means. Measured practically it will include the effects of eccentricity as well as out-of-roundness, roughness etc. For a collet I would expect it to relate to the bore of the collet when correctly mounted in it's holder. The lower the figure the better really BUT the higher the price will be. Keith |
jason udall | 03/09/2013 14:50:56 |
2032 forum posts 41 photos | TIR always intrigued me..at what projection is that quoted for... If collet is say absolutely ( ) true but has say 2 thou runnout..then center of tool will describe a circle 2 thou in diameter...hole drilled will be 2 thou larger than expected ( right! your drill /cutter is that well ground. .. you wish ) if on the other hand the collet holds non parallel. .the effect will now vary with "depth" () |
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