Sven Wingquist (1876–1953) invented the
spherical bearing in 1907. He founded a
global company in Sweden, AB Svenska
Kullagerfabriken, now commonly known as SKF,
which is still the world’s leading producer
of industrial bearings.
When you have a
difficult, heavy job, spherical bearings may
be your answer. Heavy load capacity and
tolerating misalignment is what makes this
design popular in industrial environments.
You'll find this design used in heavy
machinery where it difficult to obtain or
maintain perfect housing bore and shaft
Spherical roller bearings,
sometimes termed barrel roller bearings, are single
or two row self-aligning roller bearings. They
comprise solid outer rings with a concave raceway.
They have solid inner rings and a cylindrical or
tapered bore and barrel-shaped (aka: spherical)
rollers with separator cages. The cages are
typically made of steel for high loading or
for smoother performance.
These bearings are particularly suitable where high
radial shock type loads occur and misalignments must
be compensated for. Their axial load carrying
capacity is relatively small.
The oscillating motion of a vibrating screen, used in mining and oil
extraction/exploration, is a perfect example of where these bearings come
into their own.