I searched the forums for this question, couldn’t find anything that gave a good enough answer. So, it becomes a new thread.
As I understand the UL94 standard, for flammability, there are grades (HBR, V2, V1, V0), and a material sample of a given thickness will be tested, and then given a...
Hello everyone, I'm not sure if this is the correct forum for this question or not, but, here goes.
We had a failure recently where one of our armature shafts (small motor for hand held powertool) failed with rotational shear.
In the area of the failure, we have a stress relieving undercut...
We pack various parts for our service dept by first wrapping them in VPI paper, then bubble wrap, then packing in a cardboard box. We have various sizes of parts, and hence various sizes of VPI paper to wrap them in.
In our company it has always been the assumption that for the VPI paper to be...
Hi all. Happy new year!
This is an initial post for a project that I am hoping to do this year.
Background: I live in the Czech Republic, in a south facing house with two roofs of different pitch (I will measure the pitch (approx fifty something and forty something)and area later on when the...
Hi, there's a lot of preamble to this post, but it will help to understand my problem,
we make powertools, with the usual universal electric motor with a pinion gear driving up into a gearcase where the rotational force is converted to lower speed axial and rotational forces.
We test the tools...
We have a vacuum device that is specified in l/min from our design centre, but our line testing unit is measuring in mmH2O.
Is there a conversion between these two units?
We are seeing drift in the pressure measurements that give the impression that the units are out of spec on the low side...
One of our suppliers is having trouble locating stock of a particular steel, 20CrMn, and they want to offer us 20CrMo as an alternative.
Now, I am an electronic engineer by training, becoming more mechanical as my job progresses, but I have no idea where to look for the characteristics of these...
I have 2 housings. One housing has a seal pressed into it, to seal a shaft that goes through both housings. Sealing between the housings is done by an o-ring, compressed between the two housings. This causes me problems in assembly, as this o-ring often gets cut or damaged when the two housings...
