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Hi David, Ok, in our case the oil is being forced thru the bearings by around 100psi of pressure. There is no where else for the oil to go but thru the bearings from one side to the other. So I am guessing we will be ok for those few seconds before the oil heats up and the flow increases...

Thanks for the input! Yeah -40 is very cold but the oil is being supplied under pressure and will likely still flow directly into the bearing from the side at a rate of perhaps 100ml/min. This cold start condition is very temporary, with the whole system getting up to full temperature after...

Hi Folks! I have a question here that I hope to use to improve my intuition of how rolling bearing lubrication works, and to settle a disagreement with a colleague if possible :) Basically, what we would like to know is whether or not the particular oil flowrate to the bearing has much of...

Hi Guys, Ok, we've contacted Technical Saftey BC and gone from there. I we have not received an answer from them yet, but we think we are a least talking to the right people. They should be able to clear up exactly what sort of system we have here and what sort of regulatory obligations we...

Greetings all, I have a question regarding whether a system is considered a piping system or a category H fitting. We have a small piping system that consists of a few feet of 1" pipe at 200psi, with a small radiator in the line. The radiator is just an air radiator with an air driven fan...

Just for everyone's interest sake, I called up TSSA and they told me that if a piping system is exempt from needing a CRA number, then the individual components that make up the system are also exempt. But of course they are still required to be properly engineered and vetted according to the...

Hi Guys, So, it would appear that neither this aftercooler nor the filter have CRN numbers. But, as I mentioned before our pressure system that we are using these items in is itself exempt from registration. So, are we allowed to used an unregistered fitting in our unregistered pressure...

Hi Shane, I agree with you 100% - the procedure for obtaining these aftercooler systems was flawed from the get go. I am trying to build ammunition for a case to get them to abandon this attempt, and this has all been very useful stuff. I was hoping to be able to tell them "we cant use...

Thanks for that Jmec87! Very good to know. Ok, so I am confident that the aftercooler system as a whole is exempt from registration requirements. However, does this mean that the individual fittings I use in this aftercooler assembly are also exempt? My reading of all this stuff seems to...

Thanks Jmec87, Here is another question you guys might have some insight on. We are an OEM ourselves and this aftercooler system is meant to be a small portable unit that we are selling to retail distributors that will be used alongside other equipment we manufacture. Do all piping...

Hi Marty, Thanks for that - this is also what I was looking for. So, the fitting I am concerned with is just a normal water separator fitting. It is around 12" long and 5" in diameter and has 1-1/2" NPT threads for connecting to the process piping and contains a coalescing filter material...

Thanks jmec87! Thats basically what I was looking for. To date I have been unable to get the Chinese company to give me anything resembling a proper spec sheet. They have only given me screenshots of spreadsheet tables, and those tables are not organised in any reasonable way. I think I am...

I'm quite certain that the system is small enough that it does not need registering. However, even unregistered systems need to comply with the local codes, which in my case is ASME B31.3 and/or BPVC section 8. So, normally a purchased fitting comes with a pressure rating that you can trust...

Basically, all we have that tells us that this equipment is rated to 250psi is a blurb on their website and the assurances of their sales people in emails. They have already changed out a component in the system to an inadequate one due to a language based misunderstanding, so its entirely...

Hi Guys, Yeah, I'm thinking I agree with you on this one - this whole deal seems fishy. One question that comes to mind is whether or not this aftercooler or the filter need to be registered as pressure vessels. I am getting the feeling that since these are Chinese manufacturers, the...

Hi Guys, We're in a bit of a quandary over here regarding an aftercooler system we are ordering from China. The aftercooler is simple, just a radiator and a moisture separator. We are purchasing from the OEM and so we were assuming that this was a pre-engineered system. However, we are...

Thanks Ed, So it would seem that Natural Resources Canada has a pilot rolling mill that they provide to companies for just this sort of problem. So at the moment we will likely be getting them to set up some test runs of small amount of cold rolled material to see if its practical to get to...

Thanks Ed, Have you ever heard of anyone rolling small quantities of stainless steel like this in a normal machine shop? Or is this the type of operation that would only be done at the mill? Its not critical we use 304 stainless here, but if we do it will need to be work hardened... Its...

I think maybe you need to be ordering 17-4 material specifically in "Condition A" in order to be sure it has been correctly annealed. Your supplier should be able to give you Material Certificates to go with that material that prove this to be the case, and the certificates also show the...

Greetings all - I have recently started a project for a prototype engine. There are some papers in the literature that suggest 304 stainless hardened to 1/4-1/2 hard (125ksi UTS 80ksi yield) will have the fatigue properties we want for UHCF. However, I am having a hard time sourcing this...