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L h rot<br />
L h osz<br />
C<br />
C o<br />
P Dynamic equivalent load [N]<br />
P o<br />
F a<br />
F r<br />
Y<br />
Y o<br />
ß<br />
n<br />
f<br />
Calculation example<br />
nominal sevice life for rotation [hours of operation]<br />
nominal service life for oscillating movement [hours or operation]<br />
basic dynamic load rating [N], see tables<br />
basic static rating [N], see tables<br />
Rod ends with integral self-aligning ball bearing:<br />
Rod ends with integral self-aligning roller bearing:<br />
Static equivalent load [N]<br />
Rod ends with integral self-aligning ball bearing:<br />
Rod ends with integral self-aligning roller bearing:<br />
axial load [N]<br />
radial load [N]<br />
axial factor, dynamic, see tables<br />
axial factor, static, see tables<br />
half the swiveling angle [degrees]<br />
ß = 90° should be used for rotation<br />
rotation speed limit [min-1]<br />
frequency of oscillation [min-1]<br />
Calculations<br />
At the rotating side of crank mechnism, a DURBAL heavy-duty antifriction bearing rod<br />
end should be installed. The expected service life amounts to at least 5,000 hours.<br />
Known: rotation speed n = 300 min-1, radial load Fr = 750 N<br />
Selected: BRF 8<br />
C = 4000 N<br />
7<br />
P=F r +y . F a<br />
P=F r + 9,5 . F a<br />
P 0=F r +y 0 . Fa<br />
P 0=F r +5 . F a<br />
(7)<br />
(8)<br />
(9)<br />
(10)
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