EDDYTHERM operating manual
18
Bearings with brass or bronze cages
When bearings with brass or bronze cages are to be heated, care must be taken to ensure that the cage does not
heat faster than the inner bearing ring. This could cause the lubrication contained in the bearing pockets to become
overheated, which in turn could, in extreme cases, lead to overheating of the rolling elements themselves. In this
case, use a hand-held thermometer to monitor the cage temperature separately and interrupt the heating cycle or
use the reduced-power heating option to avoid overheating of the cage.
C1 and C2 bearings
When heating bearings with limited clearance (such as C1 and C2 series bearings), it is possible that the inner
ring may heat more rapidly and expand much faster than the outer race, causing the bearing to “freeze up”
during heating. Therefore, rotate these bearings during heating to make sure that they turn freely and, if necessary,
interrupt the heating cycle or use the reduced-power heating option to allow the outer ring to heat up
