bearings types
bearings types
Author :Admin | Publish Date:2013-05-15 10:35:54
Ball bearings, as shown to the left, are the most common type by far. They
are found in everything from skate boards to washing machines to PC hard drives.
These bearings are capable of taking both radial
and thrust loads, and are usually found in applications where the load is light
to medium and is constant in nature (ie not shock loading). The bearing shown
here has the outer ring cut away revealing the balls and ball retainer.
Roller bearings like the one shown to the left are normally used in heavy
duty applications such as conveyer belt rollers, where they must hold heavy
radial loads. In these bearings the roller is a cylinder, so the contact between
the inner and outer race is not a point (like the ball bearing above) but a
line. This spreads the load out over a larger area, allowing the roller bearing
to handle much greater loads than a ball bearing. However, this type of bearing
cannot handle thrust loads to any significant degree. A variation of this
bearing design is called the needle bearing. The needle roller bearing uses
cylindrical rollers like those above but with a very small diameter. This allows
the skf bearing to fit into tight places such as
gear boxes that rotate at higher speeds.
Roller thrust bearings like the one illustrated to the left can support
very large thrust loads. They are often found in gearsets like car transmissions
between gear sprockets, and between the housing and the rotating shafts. The
helical gears used in most transmissions have angled teeth, this can causes a
high thrust load that must be supported by this type of bearing.
The above bearing types are some of the most common. There are thousands of
other designs, some standard and some specific applications but all perform the
same basic function. Essentially further types of bearings usually take all or
some of the characteristics of the above bearings and blend them into one
design. Through the use of careful material selection and applying the correct
degree of machining precision, a successful iko
bearing solution can usually be found.
Each bearings types displays characteristic properties, based on its
design, which makes it more, or less, appropriate for a given application. For
example, deep groove ball bearings can accommodate moderate radial loads as well
as axial loads. They have low friction and can be produced with high precision
and in quiet running variants. Therefore they are preferred for small and
medium-sized electric motors.
Spherical and toroidal roller bearings can carry very heavy loads and are
self-aligning. These properties make them popular for example for heavy
engineering applications, where there are heavy loads, shaft deflections and
misalignments.In many cases, however, several factors have to be considered and
weighted against each other when selecting bearings types, so that no general
rules can be given.The information provided here should serve to indicate which
are the most important factors to be considered when selecting a standard [bearings types]
and thus facilitate an appropriate choice
BRING SKF RLS 24 (3 X 5 3/4 X 1 1/16)
BRING SKF RLS 32 (4 X 7 1/4 X 1 1/4)
BRING SKF RMS 6 (3/4 X 2 X 11/16)
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