Bearings for high loadlow speed applications
July 1st 2008 The JK0S range of integral tapered
roller bearings from Schaeffler are
ideally suited to applications in
which loads are very high but speeds
comparatively low, such as pulleys, crane
wheels and cable rollers.
A range of integral tapered roller
bearings is now available from Schaeffler
UK, which are easy to mount, greased for
life and require no setting of internal
clearance when used in an 'O'
arrangement.
The JK0S integral tapered roller
bearings are single-row bearings, sealed
on one side and lubricated for life with a
high quality grease. The self-retained
bearings are installed in pairs to provide a
bearing unit that is sealed on both sides.
Due to their large support base, the
bearing unit can support all load
combinations, including radial, axial and
tilting forces. The support base is
significantly larger than in double row
cylindrical roller bearings.
The JK0S series is particularly suited to
applications where loads are high and
speeds relatively low. Examples include
wheel bearings on agricultural machinery;
support rollers in forklift truck masts; and
for cable sheaves and return pulleys on
cable cars.
When the bearing is assembled with an
annular ring, the profiled plastic cage
snaps into a slot in the extended outer ring
and holds the bearing ring and the roller
and cage assembly together. After the
bearing is fitted, there is no longer any
contact between the cage and the outer
ring, therefore there is no wear of the cage
during operation. The bearings can be
used in operating temperatures from
–30°C up to +110°C, limited only by the
grease and seal material. More articles from Schaeffler (UK) Ltd: | 
