Belleville Springs
Belleville Springs
(OP)
I am looking for a spring(s). That have a 0.5 inch travel and a 0.10 minimum height.
Total load is >500lbs
I can locate these around a shaft for stability. Spring ID is >0.375, OD may be <0.75 inches.
I am thinking of the mentioned Belleville Springs but I worry about the snapping. I know I can stack these alternating front to back to get the travel but the higher the h/t ratio the more the snap.
Ideally the springs would have the lowest height when unloaded but this may not be possible, opposite of the Belleville Springs.
Anyone have an opinion or suggestion?
Total load is >500lbs
I can locate these around a shaft for stability. Spring ID is >0.375, OD may be <0.75 inches.
I am thinking of the mentioned Belleville Springs but I worry about the snapping. I know I can stack these alternating front to back to get the travel but the higher the h/t ratio the more the snap.
Ideally the springs would have the lowest height when unloaded but this may not be possible, opposite of the Belleville Springs.
Anyone have an opinion or suggestion?





RE: Belleville Springs
RE: Belleville Springs
I have been using medium service die springs for adjustable optical fixtures. These are very stiff, and they have a solid height about half of their free height. I have worked out usable travel versus working height, and these outperform rubber springs, and stacks of belleville washers.
Search Associated Spring Raymond. Several other vendors make them. These springs are colour rated, and typically, are painted blue.
--
JHG
RE: Belleville Springs
You have painted yourself into a corner.
There is no magical spring material that can get you out of it.
Start the redesign of whatever the spring goes into by selecting an appropriate stock spring, then design your assembly around it.
Mike Halloran
Pembroke Pines, FL, USA
RE: Belleville Springs
RE: Belleville Springs
I haven't dealt with springs that much in my walk of life but that sounds like a pretty remarkable specification for a Belleville spring, to me. Maybe a telescoping conical spring could manage that, but like Mike Halloran, I'm dubious about the force to volume ratio, and I agree with his advice on how to proceed.
"Schiefgehen will, was schiefgehen kann" - das Murphygesetz
RE: Belleville Springs
RE: Belleville Springs
There are a lot of good things about Belleville Springs, but the catalogs didn't previously mention the above pitfalls.
If the numbers you had are correct, you are looking at 6:1 free-height to compressed height. This and 4:1 are far beyond what a Belleville Spring can do. Waver-springs might, but they will be a larger diameter than what you have mentioned.