Page 597 - SKF-bearing-housings

Standard housing design

Fig. 4 Mounting in different positions
SDM Yankee cylinder rocker housings It is possible to mount SBFN housings at
angles of 0°, 90°, 180° and 270°.

Housing material
SKF housings for paper machines are made
of grey cast iron.
Paint, corrosion protection
SBFN, SBPN and SDM housings are painted
blue (RAL 5007) using a water based alkyd/
acryl paint. The paint protects the housings
in accordance with ISO 12944-2, corrosivity
category C2 († page 36). Housings can be
repainted with most water or solvent based
one- or two-component paints. The housings
can also be supplied painted according to cus-
page 189. For information about other hous- tomer specification († Housing variants,
ings for felt rolls and drying cylinders such as page 594).
SBF and SBP housings (predecessors to SBFN Unpainted surfaces are protected with a
and SBPN housings respectively) as well as solventless rust inhibitor.
SDM Yankee cylinder housings on rockers
(† fig. 4), all of which can still be supplied by
SKF, contact the SKF application engineering Dimension standards
service. SBFN, SBPN and SDM housings are not
standardized either nationally or
internationally.
Features and benefits
SKF housings for paper machines have the
following features and benefits:
Optimized designs
The housing designs are developed together
with leading OEMs and are optimized to
accommodate the arduous operating condi-
tions present in paper machines.
Effective and maintenance-free seals 13
SBFN and SBPN housings have upgraded lab-
yrinth seals compared to their predecessors,
providing extra protection against liquid con-
taminants during operation and high pressure
wash-downs. The seals also virtually elim-
inate oil leaks, even for high oil flow rates.
SDM housings have a maintenance-free,
non-contact gap-type seal incorporated into
each cover.
Prepared for condition monitoring
The housings have tapped holes to attach
condition monitoring sensors.

593