How to Estimate Average Impact Force from Energy and Stroke
A simple way to estimate average stopping force before checking catalog force limits.
Direct answer
Average stopping force can be estimated by dividing total absorbed energy by stopping stroke in meters. This is an average value; actual peak force depends on damping design, adjustment setting, velocity and product family.
Questions this page answers
- How do I calculate average impact force for a shock absorber?
- How does shock absorber stroke affect impact force?
- Why does a longer stroke reduce stopping force?
Required inputs
totalEnergyNmavailableStrokeMmproductFamilyimpactVelocityMps
Formula logic
Average impact force
E is total absorbed energy in N m and s is stopping stroke in meters.
Favg = E / sUnit: N
Calculation steps
- 1
Calculate total energy
Include kinetic, drive-force and gravity components where relevant.
- 2
Convert stroke to meters
Use actual usable absorber stroke, not just available installation space.
- 3
Compare with force rating
Check catalog maximum impact force and review whether the machine frame can handle the load.
Common mistakes
- Using millimeters directly in the formula without converting to meters.
- Treating average force as peak force.
- Choosing too short a stroke and creating unnecessarily high stopping force.
Catalog source notes
- The full product catalog tables expose stroke (S), energy per cycle and maximum impact force, allowing a direct explanation of the energy-stroke-force relationship.
Move from answer to model shortlist.
Use the sizing tool when you have the inputs, or send the application data for engineering review.