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INNER RING HOLE
DIAMETER
LOAD
(daN)
5 100
6 120
8 170
Axial holding load of the rod end
F (daN)
self-lubricating rod ends and spherical bearings
10 200
12 270
14 400
16 550
18 580
20 600
22 700
25 800
30 1200
35 1400
40 1650
50 2000
Table 1
In case of dynamic load (load with relative movement between the inner and outer ring) it is necessary to carry out
the following tests
a) Permissible radial load on the rod end
According to the type of load, it is indispensable to check the permissible stress.
Considering the same nominal load, dynamic loads produce greater stress on the rod end than constant loads; it is therefore
necessary to introduce the coefficient Kf in the calculation of the permissible radial stress:
Fr amm. = Co x Kf
Fr amm. = maximum permissible load on the rod end ( daN )
Co = permissible radial static load on the rod end ( daN )
Kf = load coefficient (see the diagrams)
Fr = radial force applied ( daN )
It is always important to verify the following condition: Fr ≤ Fr amm
radial force
constant load simple dynamic load alternating dynamic load
radial force
radial force
time
Kf 1 Kf 0,5 Kf 0,25
time
time
b) Permissible axial load on the rod end
Normally there are no dynamic axial loads, so the conditions to be observed are the ones given in the paragraph on static
axial loads on page 9.
10