Thanks everyone for your responses. They have been helpful.
I ran a test this weekend with a needle bearing under the spring. So far, the spring has completed 150,000 cycles with the max load matched. I had to reduce the stroke 7mm due to the bearing/washer thickness. This is more than...
I appreciate the responses. I am testing now with a roller thrust washer and two flat thrust washers top and bottom. This is to validate the twist as the root cause. So far, we have improved cycle life by 60% and still increasing. This solution is not practical in real life due to cost and...
I have a compression spring that is failing in application. The spring meets industry standard design criteria for axial loading. However, in application this spring also has a moment load generated as the opposite ends rotate relative to each other (see attachment). The questions I have are...
