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Calculation of the permissible load of rubber-metal buffers

Technical information on rubber-metal buffers and rubber-metal rails according to DIN ISO 3302-1 in standard quality: NK (natural rubber)

Determination of the spring travel fmax according to the load type

Determination of the spring travel fmax according to the load type

Load as end stop (impact load) - permanent (max.): fmax = H × 0,50
Load as end stop (impact load) - rare (max.): fmax = H × 0,60
Continuous load - static (max.): fmax = H × 0,15
Vibration damping: fmax = H × 0,05 bis 0,10 × H

Diameter expansion

Diameter expansion:
f = 0,50 × H / D1 = 1,40 × D

Impact surface

Impact surface:
D2 > 1,25 × D

Impact direction

Impact direction:
αmax ± 4°

Round buffer

Please enter the values for diameter and rubber height of your round buffer in the following fields to have the form factor k calculated

Form factor k

Read the value for the modulus of elasticity (Ec) as a function of the form factor k from the diagram in the upper right corner.

 

Result Fzul

Rectangular buffer/rail

Please enter the values for rubber height, width and length of your rectangular buffer/rail in the following fields to have the form factor k calculated.

Form factor k

Read the value for the modulus of elasticity (Ec) as a function of the form factor k from the diagram in the upper right corner.

 

Result Fzul

Ec depending on k

Please read off the value for the modulus of elasticity Ec from the following diagram after the form factor k has been calculated (see left).

 
Elastizitätsmodul in Abhängigkeit vom Formfaktor k

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Thank you for your interest in our products and services. The Trygonal Group has been acquired by the Freudenberg Group, effective April 30, 2024. Since November 1, the regional Trygonal companies have been gradually merged into Freudenberg Sealing Technologies, starting with Trygonal Group GmbH. Detailed information about Freudenberg Sealing Technologies and the Freudenberg Group can be found at www.fst.com.

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