Mechanical & Civil Engineering
Belleville Disc Spring Stack Calculator
Estimate force and deflection for a stack of Belleville disc springs in parallel or series.
Your inputs
Change any value to update the result instantly.
Total stack force
400 lb
Total stack deflection
0.06 in
Effective stack rate
6,666.67 lb/in
Total discs used
6
What this calculator does
Belleville Disc Spring Stack Calculator: Applies the standard machine-element relationship used in design textbooks so the capacity, rating or geometry can be worked out step by step.
What your result means
The headline figure is the capacity, rating or geometric result for the element you described. Compare it with the manufacturer's rating and your required service factor.
Formula and working
F_stack = n_parallel·F_disc; δ_stack = n_series·δ_disc
- 1
Collect the inputs
Force per single disc = 200 lb; Deflection per single disc = 0.02 in; Discs in parallel (stacked same way) = 2; Discs in series (alternating) = 3
- 2
Apply the formula
F_stack = n_parallel·F_disc; δ_stack = n_series·δ_disc
- 3
Result
Total stack force = 400 lb
Frequently asked questions
Symbols and assumptions
- forcePerDisc
- Force per single disc (lb)
- deflectionPerDisc
- Deflection per single disc (in)
- nParallel
- Discs in parallel (stacked same way)
- nSeries
- Discs in series (alternating)
- • Standard textbook geometry and steady operating conditions are assumed; shock, misalignment and wear factors are not applied automatically.
- • Material and surface-finish allowances must be chosen by the user for their actual component.
Sources and review
Reviewed 2026-09-22 · Next review 2027-09-22
- • This is an educational estimate for learning and checking, not a design deliverable.
- • Real design must follow the governing code or standard for your jurisdiction and be reviewed and signed off by a qualified engineer.
- • Safety factors, load combinations and material certification are the responsibility of the designer, not of this page.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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