SKF - Rolling Bearings

9 CARB toroidal roller bearings
Sealing solutions
The assortment of sealed bearings († fig. 6)
consists of small and medium-size full complement
bearings with a cylindrical bore.
These bearings, which are typically used in
applications where there are slow speeds and
very heavy loads, can accommodate inner or
outer ring rotation. The seals are designed for
long service life and make the bearings virtually
relubrication-free.
Sealed bearings have a double lip contact
HNBR seal on one or both sides (designation
suffix CS5 or 2CS5). The seals are reinforced
with a sheet steel insert. They are fitted in a
recess on the outer ring and seal against the
inner ring raceway.
Fig. 6
Greases for sealed bearings
Sealed CARB bearings are filled with a highquality
grease († table 1) that has good corrosion
inhibiting properties. Sealed bearings
with non-standard grease fills can be supplied
on request.
–50 0 50 100 150 200 250 °C
Table 1
Technical specifications of the SKF grease for sealed CARB toroidal roller bearings
Grease
Designation
suffix
Temperature range 1) Thickener Base oil
type
–50 0 50 100 150 200 250 °C
NLGI Base oil viscosity [mm 2 /s]
consist ency at 40°C at 100 °C
class (105 °F) (210 °F)
LGHB 2 GEM Calcium
complex
sulphonate
Mineral 2 400 26,5
–60 30 120 210 300 390 480 °F
1) Refer to the SKF traffic light concept † page 244
962