Recent content by spedtoe169

Can anyone offer referrals for a CNC shop that can reliably provide a small number of custom parts in the DFW area? It's a small piece of chemical test equipment made of aluminum, nothing too fancy and the tolerances are fairly loose. Thanks, John

I'm working on a project that deals with the handling of potash in it's as-mined state. I'm looking for information regarding the types of materials that can live in such an environment. I did quite a bit of searching but didn't find a whole lot. Can 304 stainless stand up to it? Do I need...

Thanks guys. I'm still waiting to hear back. I had no idea something like this would be so hard to find.

I think its pretty much a toss between stainless and aluminum in terms of heat transfer. You should go with aluminum because of the weight savings. It's more than worth having to insulate some key tubes to prevent heat soak.

It is production based. I'm going to need about 1500 per year.

I've been looking for a spring clip for several months to no avail. It's for a bore about 3" in diam (there will be several sizes). What I would really like is something like this: http://evilspeed.com/misc_pics/centercap_clip.jpg But I would settle for just a round wire clip with no 'bumps'...

I checked out the engagement using formulas from the Machinery's Handbook and everything checked out ok. Frequent assembly/disassembly is not an issue. Its unlikely that this stuff will ever come apart. Would a small dab of anti-seize help prevent the galling? Silver plated screws are a...

I was afraid of the galvanic corrosion issue. It is a problem in all environments, or just the more severe? The Ti is being selected for its strength to weight ratio. Basically I have a bolted joint that needs to be as light as possible. In the past, stainless steel fasteners have been used...

Hi all, I'm thinking about using titanium bolts for an application I'm designing. The bolts we're looking at are 6A1-4V unplated. They'll be going directly into tapped 6061-T6. I'm not very concerned with the strength of the bolts, they should be more than adaquate as there are a lot of them...

How are ball bearings manufactured? There are many that I've seen that don't seem to be able to be disassembled. The balls are trapped between the inner and outer race and the races are solid pieces. How is this type of bearing made? Also, what type of operations do bearing balls have to...

This is really helpful guys! Keep it up! For the purposes of my analysis, I'm assuming that everything is torqued properly and won't come loose. The vehicle we're talking about weighs 2700lbs with driver and no fuel (it can carry about 14gal). My company has no policies for anything of...

This might sound like a rookie question, but how do you calculate the tensile force based on the torque applied to the fastener?

Yes thank you, that is an excellent start. I think you are exactly correct but I'm not sure about and shear loads due to vehicle weight and vertical loading due to weight transfer. As it will be a hubcetric wheel, the center hole should take these loads instead of the studs. I think the studs...

I'm trying to figure out how to constrain a wheel model. I'm only analyzing the wheel center of a 3-piece wheel. It is in NO WAY in contact with the tire. I want to know how I should constrain the hub face and the studs. I realize that the nuts on the studs will be torqued and there will be...

Thanks guys. Perhaps the condition I saw could better be described as 'deformation of the tooth surface'. Its hard for me to explain. Its not like the teeth were dramatically bent, but it seemed like the driven side of the teeth had been compressed slightly. There seemed to be some...