56
NOTE
The old and once popular method of heating bearings in an oil bath is DEFINITELY
DISCOURAGED. HEATING INNER RING WITH A GAS TORCH IS PROHIBITED. In either case,
it is difficult to control the heating rate and final temperature and even more difficult to keep the oil
and/or bearing clean.
2.
When bearings are installed on the shaft make sure the bearing is installed squarely and is
firmly seated. Hold bearing in place until it has cooled sufficiently so that it will not move
from position. Cover bearings to protect them from dirt.
NOTE
When installing the bearings the mounting pressure should never be applied in such a manner that
it is transmitted through the rolling element. Apply the mounting force directly against, and only
against, the inner ring.
7.9
Bearing Removal
If the bearing cannot be removed with the tools available never use a torch under any
circumstances. Split the outer ring with a small hand grinder, saw through the ball/roller retainer,
and split the inner ring about three quarters through with a grinder and break with a cold steel
chisel.
7.10
Bearing Cleaning
NOTE
Do not attempt to inspect condition of bearings until they have been cleaned.
1.
Solvent for cleaning bearings should be in a clean container. Place bearings in solvent and
let soak for a short time. Agitate the bearing around near the top of the container, giving it a
turn now and then until it is clean. Rinse in a clean container of fresh solvent.
NOTE
Do not spin dirty bearings. Rotate them slowly while washing.
2.
Dry thoroughly cleaned bearings. If an air hose is used for drying, make sure it is clean dry
air.
NOTE
Do not allow the bearings to spin by force of air. Hold the inner and outer rings to prevent
bearing from spinning.
3.
Inspect bearings immediately. If there is any question as to the condition of a bearing do
not hesitate to replace it. There are many conditions that contribute to the deterioration of
the bearings. A qualified bearing representative should be consulted if there is any question
of bearing condition.
