On Thu, 15 May 2014 09:27:25 +0100, you wrote:
>I use Loctite 603 for this and lots of similar jobs. It provides a very strong >bond, even in the presence of oil. It is a little stronger than 640 but >quicker setting, so make sure you get the shaft right in, first time, and to >full depth, otherwise you won't get it back out without heating to break the >bond. >http://www.loctite.co.uk/loctite-4087.htm?nodeid=8802627551233 >A conversation with the technical chaps at Henkel Loctite tells me that the >fit between shaft and hole should be a non-clearance fit (i.e. a light push or >press fit). Although Loctite can cope with a very small gap, it is set by the >exclusion of air, and there is some interesting information on the Loctite >site (www.loctite.co.uk) about what happens as the adhesive film shears in a >press or tight push fit. >I have used 603 for several highly stressed joints in steel and aluminium, and >it has not failed me. Hi Marcus - I've got both - the 640 gives a bit more assembly time, sometimes needed :) You need to read the data sheet for whichever product you are using. Some types like a tighter fit than others, but like you, I've never had a joint fail. My friend does a lot of work for a motor rewind company and bushes motor casings for new bearings regularly. Usually the bearing has failed or seized, twisted and damaged the housing. Some of the bushings he uses are interesting. The inner surface is finely finished to take a bearing as a press fit, the outer surface however looks rough. It's deliberate to enable the retainer to get a good key. The only way to get them out once stuck in is more often than not bore them out! Steve Blackmore -- ------------------------------------------------------------------------------ "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE Instantly run your Selenium tests across 300+ browser/OS combos. Get unparalleled scalability from the best Selenium testing platform available Simple to use. Nothing to install. Get started now for free." http://p.sf.net/sfu/SauceLabs _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
