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Mounting and installation<br />
tips<br />
Deep-groove ball bearings<br />
When installing <strong>NILOS</strong>-<strong>Rings</strong> on deepgroove<br />
ball bearings, the <strong>NILOS</strong>-Ring can<br />
be damaged as a result of the axial play of<br />
the bearing. Therefore, we recommend following<br />
the illustrations (at right and below)<br />
which show the correct and incorrect way<br />
to install the bearing into a <strong>NILOS</strong>-Ring.<br />
Incorrect method of fitting shaft in ball<br />
bearing without the use of a fitting aid.<br />
Correct method of fitting<br />
shaft in ball bearings.<br />
Incorrect method of mounting deep groove ball bearings without the use of a fitting aid.<br />
The <strong>NILOS</strong>-Ring is distorted.<br />
Correct method of fitting<br />
deep groove ball bearings.<br />
Tapered roller bearings<br />
Important points to remember when<br />
installing AV or AK <strong>NILOS</strong>-<strong>Rings</strong>:<br />
The pivot pins of the bearing housing<br />
should be installed exactly in the center<br />
and parallel both for horizontal and vertical<br />
installation. Otherwise, rings can become<br />
skewed when installed and damage to sealing<br />
edges may result.<br />
In the case of AK rings, the two retaining<br />
nubs (or locking dimples) must click<br />
into the corresponding cutouts in the shock<br />
ring or pivot pins. This will prevent the ring<br />
(with its two sealing edges) from turning in<br />
service.<br />
These locking dimples are placed at 180<br />
degrees on a pitch circle diameter (w in the<br />
dimension tables). The dimples have a base<br />
diameter of 4 mm and height of approximately<br />
2.5 mm. To locate them in the abutment<br />
shoulder or spacing washer against<br />
which the ring is installed, two small holes<br />
can be bored or grooves should be made<br />
to fit a small screwed-in striking pin. This<br />
pin will then be in position to serve as a<br />
positive stop at one of the two dimples in<br />
case of slipping.<br />
The illustrations (below) represent proper<br />
installation of AK rings.<br />
Showing “w” locking dimples<br />
Installation of AK rings<br />
Correct method of fitting<br />
a taper roller bearing with<br />
a <strong>NILOS</strong>-Ring AK.<br />
Tighten firmly so that sealing edges<br />
of <strong>NILOS</strong>-Ring will be put under<br />
slight tension.<br />
Release about 1⁄6 turn. By that<br />
the tension of the sealing edge of<br />
the <strong>NILOS</strong>-Ring will be reduced to<br />
the proper amount.<br />
5
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