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If we're talking SI units I thought according to thermodynamic temperature water froze at 273.15 kelvin and boiled at 373.15 kelvin.

or alternatively use http://www.onlineconversion.com/

Cheers for the info guys

Hi Nowhere near my reference books. Anybody have Poissons and Modulus of Elasticity for Aluminium 2024 Bar diameter 35.5mm in the T6 condition close to hand. Thanks

Hi Spike42 This website might give you a little more information and show you a few options. http://www.poeton.co.uk/ Best of luck

I have a shaft which is required to move linearly a total of 40mm. One end of the shaft is connected to a lead screw and motor while the other end is connected to my load which is in a dirty environment. The seal needs to meet IP69K (100 bar, 80 Celsius jet wash water at 150mm distance for 2...

CoryPad, My source was http://www.roymech.co.uk/Useful_Tables/Screws/Thread_Calcs.html which references ISO 898-1 at the very top. The equations seem to be correct. Thinking about this again I think I may now see my error. The Juvinall equation is the tensile force to strip a nut where the...

It includes a bit of everything. I work fully with SI units and it's invaluable. It usually includes references to most of the worlds leading standards. Depending on what your looking for it will includes DIN and ISO along with BS and others.

My understanding is that if you buy AutoCAD now it comes with basic solid modelling capability. This was also true for R14. This is not MDT however. If however you bought MDT in the past then by default you received AutoCAD as part of the package. I don't think you can buy MDT (with ACAD)...

SteveBraune No you have not misread my post. In hindsight I used bad terminology. I was trying to get across that the bolts were running in the direction of the longest edge. Also following on from CoryPad's advice I did some more research in attempt to learn a little more. A couple of...

Thanks for your input CoryPad When you say they do not represent the utmost in accuracy do you mean they are conservative or that a more detailed analysis is reqd? I am happy with conservative in this application as it is a low volume design and so I cannot justify extended analysis.

I originally posted this on 'Mechanical engineering other topics'. I have been asked to now post on this forum instead. Apologies if anyone has already read. I have a slender square aluminium (6082 T6) column that is 44mm square and 160mm long. A load of 2250N is taken through the centre of...

I am designing a piece of continuous processing equipment that is subject to temperature extremes (-20 to 45 Celsius) and is also subject to high pressure water jets. I need to monitor a load (only up to a couple of hundred kg's) continuously within this environment with a system that is...

An assembly I'm currently designing is exceptionally tight for space. I want to see how much access I have with a standard 8mm spanner (closed one end, open the other). Anyone know where I can find a drawing showing typical spanner dimensions that I can model for insertion into my 3D model...

Thanks for all your posts. EnglishMuffin was correct. I was looking to undercut the shaft to prevent grinding wheel corner breakdown. I ended up making the undercut angled with a width of 0.5mm and a tip radius of 0.2mm.

Not being in pharma industry I'm not sure what the Ra values of your prebuffed sheets are. I have had a similar problem with fingerprints and marking on grained stainless. I switched over to 2J finish OPTISHEEN stainless steel from Aalco with good success.

israelkk, So if I'm understanding correctly following on from zvivik we get sigmax=(My)/I where M=1/2 Pin Length * 1/2 Load tau=F/A where F=1/2 Load Then use failure criterian (Is this Von Mises??) as presented by zvivik. Have I understood you correctly??

Thanks for the response. I'm therefore assuming that your equation will simplify in this case to sigma=sqrt(sigmax^2+3*tau^2). Ie sigmay=0. This is the case with bending and shear however in this example would I need to use bending and shear combined or are they mutually exclusive events. Ie...

This is very interesting. I have always assumed that it is a double shear problem. When considering the bending stresses do I also need to combine these stresses with that of the shear or is it a case of when the pin is new it is a double shear problem and when the pin is worn then it is a...

Depending on your application you might also want to consider molded oil bearings from NSK. Details at http://www.tec.nsk.com/weblibrary/library/industries/general%20machinery%20and%20equipment/molded-oil%20bearings%20(brochure%20e1216).pdf