Belleville Springs

When Belleville springs are stacked, whether in series or parallel, each washer’s outer and inner edges contact the adjacent washer, and as the stack compresses, these contact points genuinely experience sliding friction against each other, unlike a single washer flexing alone with no adjacent surface to rub against.

Here is why this matters. This genuine inter-washer friction provides real, useful damping — absorbing shock and vibration energy as heat rather than transmitting it fully through the stack — which is why Belleville stacks are often specifically chosen over a single large spring for vibration-damping and shock-absorbing applications, not just for the tunable force curve stacking configuration alone provides.

A genuine, honest limitation is worth stating plainly. Because this same friction genuinely causes wear at the contact points over repeated cycles, especially without adequate lubrication, buyers must confirm their application’s cycle count and lubrication plan are adequate for the expected service life, rather than assuming a Belleville stack’s damping benefit comes at no cost. Unlubricated, high-cycle applications can genuinely see contact point wear that changes the stack’s height and force characteristics over time, and buyers should confirm whether a lubricated or coated washer surface is warranted for their specific cycling and environmental conditions.

Akbar Fasteners Pvt. Ltd. exports to over 50 countries, and our Belleville spring range is manufactured and verified for disc geometry and load compliance under our ISO 9001:2015 quality system. This product is also known as conical spring washers or disc springs — see our Conical Spring Washers page for stacking configuration and force-curve tuning details.