A valve would be too easy! I want to keep away from valves, it is something that can be changed after the system has been set up, and the oil, hopefully, has lots of tiny bits of wear debris which can get stuck in valves.
I'll have a look at the Lee company literature.
Mike,
So I see, just done some calcs for 3mm and 2mm tube at different oil viscosities.
Any thoughts on multiple orifices in sequence?
I did calculations using the equation in my first post where the downstream pressure of orifice 1 is the upstream pressure of orifice 2 etc. Three orifices at...
Looking for a bit of advice, and confirmation that I am on the right path.
I need to take a feed off oil system running at 10 bar, which will pass oil through a couple of devices before being returned to the sump above the oil line. Flow in the branch line to be between 2 and 4 l/min.
I started...
I was trying to keep it simple. Yes the studs are horizontal, and all loads as far as I can tell are on the centre line so each stud has an equal share.
The COG of the pump is above the centre line of the studs, until now I have ignored any moment caused by the pump, apart from it's weight
The stud is 8mm diameter, the threads are only at the ends, 15mm one end 25mm the other (both M8)
Two studs are screwed into a flange, a manifold slides into the studs and a pump fits on the end, the whole lot is clamped together using 2 M8 nuts and washers.
I have assumed its bending, but I...
I have a stud with threads at both ends loaded in bending. Should I treat the whole stud as one diameter or reduce the diameter of the threaded parts to the thread minor diameter?
Reducing the diameter at the ends will give localised high stresses.
The stud mufactured using 304 SS bar stock...
May be moving back to the old tube supplier, currently getting a 30% failure rate on the part, used to be 2% or less. The tube is bespoke in Aluminium Oxide 96 ceramic.
Ringman where are you based, I'm in sunny Glasgow UK.
There was a link in another thread to a bypass loop calculator. Over the past week I have been punching numbers into it and looking at the results.
BigInch the sensor tube diameter is fixed, but from my research over the past week:-
To get the oil to flow through the bypass the pressure drop...
The Tick's final post is what I'm trying to do. (Sorry I'm new to this forum and haven't worked out how to quote yet) I chose TR over cylindricity because that might be easier to inspect given a suitable measurement jig.
I'm off to buy a GD&T book....
Thanks for all the replies
The part is used in an assembly where a copper coil is wound around part of the 10mm diameter, so it doesn't have to fit into anything.
Variations in the diameter along the length of the feature cause problems getting the coil to operate within spec. The result is...
Now correct me if I'm wrong, but putting a tolerance on the diameter fixes the limits of what is acceptable size wise, and the Total Runout is how much that dimension is allowed to vary over the length of that particular feature so long as the runout does not take it either side of the...
Oh sorry, information on a need to know basis.
I've specified a straightness tolerance on the tube axis of 0.2mm diameter. The tube axis is the datum and runout is relative to that datum.
I'm having problems getting a tube manufactured without variations in a diameter making assembly more difficult than it should be, the diameter varied depending on where you measured the part, but still within the specified tolerance band. I'm hoping total runout will make things clearer for the...
My question is this:
If I specify a total runout of 0.05mm on an OD of 6.05 +/-0.05mm, does that mean when it gets inspected by QA the maximum allowable diameter is 6.15mm or 6.1?
This is my first post, hopefully I have the correct forum.
I am trying to fit a sensor that can take a maximum flow rate of 4 l/min into a lubrication system that has a 60 l/min flow. The easiest way I can think to do this is to design a simple manifold and hook the sensor up parallel to the...
