Page 606 - SKF-bearing-housings

Housings for paper machines SBFN, SBPN and SDM series

Lubrication Fig. 11

SBFN, SBPN and SDM housings are designed
for high-flow circulating oil systems. The oil
should be selected based on the operating
conditions of the bearing. For additional infor-
mation about lubricant selection, refer to the
product information available online at skf.
com/bearings.
A circulating oil lubrication system typically
has supply lines and drain lines. Circulation is
normally produced with the aid of a pump.
After the oil has passed through the bearing, it
drains from the housing and flows into a tank
where it is filtered and allowed to cool before
being returned to the housing. Proper filtering
and cooling of the oil are important factors for
bearing and oil service life, and can improve
machine performance as well as cost savings. Fig. 12
SBFN housings have two oil inlets and one
oil outlet († fig. 11). One of the inlets as well
as the outlet are plugged with plastic plugs.
The other inlet, not in use, is plugged with a
steel plug.
SBPN and SDM housings have two oil inlets,
and two oil outlets on each side († figs. 12
and 13). SKF recommends using both outlets
on the relevant side to sufficiently drain the
large quantity of circulating oil. The tapped
outlets have two plastic and two steel plugs.
The steel plugs should remain on the side
opposite the return pipes.

Fig. 13

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