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> Industry newsWhat is the type, purpose and function of bearing?
2017-11-30
The part that supports a relatively rotating shaft is called a bearing. Normally, the shaft is rotated. There
are also shafts that do not rotate the FB090 bronze roll bushing and
the housing rotates, such as automotive wheel bearings. Bearings
are divided into rolling bearings and plain bearings. Rolling said
upstairs is only a class of bearings collectively. Commonly used in
general have the following ten kinds: 1, deep groove ball bearings deep
groove ball bearings with simple structure, easy to use, is the largest
production volume , The most widely used type of bearings. It is mainly used to bear a radial load, but also can withstand a certain axial load. When the bearing radial clearance increases, with angular contact bearing function, can withstand greater axial load. 2,
self-aligning ball bearings Self-aligning ball bearings have just two
columns seeking, the inner ring of agricultural machinery parts bushing
has two raceways, the outer raceway is spherical, with self-aligning
performance. It
can automatically compensate the concentricity error caused by the
ramps of the shaft and the deformation of the housing, and is suitable
for the parts that support the seat hole that can not guarantee the
strict coaxiality. The
bearing mainly bear radial load, radial load at the same time, also can
withstand a small amount of axial load, usually without bush bearing to
bear the pure axial load, such as to bear pure axial load, only a row
of just ball Force. 3,
angular contact ball bearings Angular contact ball bearings limit the
high speed, can withstand both longitudinal and axial loads, but also
can withstand pure axial load, the axial load capacity determined by the
contact angle, and with the contact angle increases Increase. Cylindrical
Roller Bearings Cylindrical Roller Bearings Rollers are usually guided
by two retaining rings of a bearing ring and cage. The roller and the
guide ring form an assembly that separates from the other bearing ring
and belongs to Separable bearings. This
bearing installation, demolition more convenient, especially when
required. Outer ring and shaft. Housing are interference fit even more
advantages. Such
bearings are generally only used to bear radial load, only the inner
and outer rings are single bearing with a flange can withstand smaller
steady axial load or larger intermittent axial load. 5,
Spherical Roller Bearings Spherical Roller Bearing sentence has two
rows of rollers, mainly for radial load, but also can withstand any
direction of axial load. This
kind of bearing has high radial load capacity and is especially
suitable for work under heavy load or vibration load, but it can not
bear the pure axial load. The self-aligning performance is good and it
can compensate the same bearing error. 6,
Tapered Roller Bearings Tapered Roller Bearings are mainly suitable for
radial and axial load to bear the main radial load, while the large
cone angle tapered roller bearings can be used to withstand the axial
load-based diameter, Axial joint load. Such
bearings are separable bearings, the inner ring (including tapered
roller and cage) and the outer ring can be installed separately. In
the process of installation and use can be adjusted bearing clearance
and axial clearance, but also pre-interference installation. Thrust
ball bearings Thrust ball bearings are a type of separable bearings,
shaft ring 'seat and the cage can be separated from the components of
the ball. The
shaft ring is a ring matched with the shaft, the shaft ring is a ring
matched with the bearing hole, and there is a gap between the shafts. Thrust
ball bearings can only be pumping hand axial load, thrust ball bearings
can only afford one-way axial load of the room, two-way thrust ball
bearings can withstand axial load in both directions. Thrust ball bearing can not be limited by the axial movement, the limit speed is very low. Thrust
ball bearings can limit the axial displacement of the shaft and the
housing in one direction, two-way bearings can limit the axial
displacement in both directions. 8,
Thrust Roller Bearings Thrust spherical roller bearings are mainly used
for axial load-bearing shafts, but their longitudinal load should not
exceed 55% of the axial load. Compared
with other thrust roller bearings, this bearing friction coefficient is
lower, higher speed, and with self-aligning ability. 29000-type
roller bearings for the asymmetric spherical roller, roller and stick
can reduce the relative sliding in the work, and the roller length.
Diameter, the number of large roller load capacity, usually with oil
lubrication, individual Low speed grease lubrication available. In the design selection, should be preferred. 9,
needle roller bearings Needle roller bearings are equipped with thin
and long roller (roller length of the diameter of 3 to 10 times the
diameter of not more than 5mm), so the radial structure is compact, the
diameter size and load capacity and other types Bearing
the same time, the smallest diameter, especially suitable for radial
mounting dimensions and restrictions on the support structure. Depending
on the use of the occasion, the choice of non-inner ring bearing or
needle roller and cage assembly, this time with the bearing surface of
the journal and shell hole directly as the bearing inner and outer
rolling surface, in order to maintain load capacity and operational
performance The
same as the ring bearing, the shaft or shell hole raceway surface
hardness. Processing precision and surface and surface quality should be
similar with the bearing ring raceway. Such bearings can only bear radial load. 10,
with spherical bearings spherical bearings with spherical bearings from
both sides with sealed spherical ball bearings and cast (or steel
stamping) bearing seat. The
inner structure of the spherical ball bearing is the same as that of
the deep groove ball bearing, but the inner ring of this kind of bearing
is wider than the outer ring, and the outer ring has a spherical outer
surface which matches with the concave spherical surface of the bearing
seat to automatically align itself. Usually
such bearings have a gap between the bore and the shaft, with top wire,
eccentric sleeve or adapter sleeve to the bearing inner ring fixed to
the shaft, and with the shaft rotation. Bearing
with a compact structure, loading and unloading convenient, perfect
sealing, suitable for simple support, commonly used in mining.
Metallurgy. Agriculture. Chemical industry. Textile. Printing and
dyeing. Conveyor machinery.