Which a few kinds bearing can be divided into?
Each have what use?
- bearing knowledge
Which a few kinds to ask bearing can be divided into?
Each have what use?
Answer questions 1, deep groove ball bearings, deep groove ball bearing has simple structure, easy to use, is the production batch, the largest's most widely used type of bearings.
It mainly USES a bear radial load, also can absorb a certain amount of axial load.
When bearing radial clearance increases, has the function of angular contact bearings can withstand larger axial load.
2, self-aligning ball bearings, self-aligning ball bearing is just for two columns, there are two inner ring raceway, the outer ring raceway is spherical shape, with automatic self-aligning performance.
Can automatically compensate the shaft alignment errors caused by rao curve and surface deformation, suitable for bearing seat hole can guarantee strict alignment of parts.
The bearing mainly bear radial load, in bear radial load at the same time, can also carry a small amount of axial load, usually is not used for pure under axial load, such as under pure axial load, only a list of just the ball bearing.
3, angular contact ball bearings, angular contact ball bearing limit rotational speed is higher, can be subject to the load and axial load at the same time, also can withstand pure axial load, its axial load capacity is determined by contact Angle, and with the contact Angle increases.
Four roller, cylindrical roller bearing, cylindrical roller bearings are usually guided by a bearing ring two guard, cage.
Of the roller and guide ring assembly, can be separated from the other bearing ring, belonging to the separable bearing.
This kind of bearing installation, remove more convenient, especially when required.
The outer ring and the shaft.
When the shell is interference fit showed more advantages.
Such bearings only commonly used to bear radial load, only.
Outer ring with penal single bearing can withstand small constant axial load or larger intermittent axial load.
5, spherical roller bearing self-aligning roller bearing has two columns of roller, is mainly used to bear radial load, but also can carry axial load in either direction.
This kind of bearing high radial load capacity, especially suitable for overloading or under vibration loading work, but can't afford to pure axial load;
Adjustable heart performance is good, can be compensated with the bearing error.
6 taper roller bearings, tapered roller bearing is mainly applied to withstand to joint mainly consisting of radial load and axial load, and the big cone Angle tapered roller bearing can be used to bear the diameter of is given priority to with axial load, axial load.
These bearings for separating type bearing, its lap (
Including tapered roller and cage)
And the outer ring can be installed separately.
In the process of installation and use of the bearing can be adjusted by the axial clearance, clearance and preloaded mounting can be made.
7 thrust ball bearing, thrust ball bearing is a kind of separation type bearing, shaft ring 'seat can be just the ball and keep ` component separation.
Shaft is made to match the shaft ring, sit circle is to match the bearing hole of the ring, and there are gaps between shaft.
Smoking to hand thrust ball bearing axial load, one-way thrust ball bearings can only carry axial load in one room, two-way thrust ball bearings can withstand axial load in two directions.
Thrust ball bear not limit axial warp to move, limit rotational speed is low.
One-way thrust ball bearing can limit the one direction of the axis and shell of axial displacement, two-way bearing can limit the axial displacement of two direction.
8, thrust roller bearing thrust spherical roller bearing used for shaft under axial load is given priority to.
By the joint load, but by the load shall not exceed 55% of the axial load.
Compared with other thrust roller bearings, the bearing friction factor is low, high speed, and with self-aligning ability.
Type 29000 type roller for asymmetric spherical roller bearing, can reduce the relative sliding roller and race in the work, and roller is long.
Large diameter, roller number load capacity is big, usually adopt oil lubrication, individual is lubricated by grease at low speed.
While selecting a design, should be preferable.
9, needle roller bearings, needle roller bearing with thin and long (
For 3 ~ 10 times the diameter of the roller length, diameter, generally no more than 5 mm)
, so the radial structure is compact, its inner diameter size and load capacity at the same time, with other types of bearing outside diameter to a minimum, especially with the limited size of the radial installation supporting structure.
According to the use of different occasions, can choose without inner ring of the bearing or needle roller and cage components, at this time to suit the bearing surface of the shaft neck and the shell hole directly as a bearing surface.
Outside the rolling surface, to keep the load capacity and operation performance and you have the same ring bearing, axis or shell hole hardness on the surface of the raceway.
Machining precision and surface and surface quality should be as a bearing ring raceway.
These bearings can bear radial load only.
10, insert ball bearing insert ball bearing unit by the two sides with a seal of outer spherical ball bearing and casting (
Or steel plate stamping)
The internal structure of outer spherical ball bearing and deep groove ball bearings are the same, but this kind of bearing inner ring width in the outer ring.
Outer ring is truncated spherical outside surface, and the concave spherical surface of the bearing can automatically self-aligning suitably.
Usually these bearings have a space between the inner hole and shaft, with the top silk, eccentric sleeve or be a set of bearing inner ring is fixed on the shaft, and with the axis of rotation.
Arrange ushering bearing structure is compact, easy to loading and unloading, seal is perfect, suitable for simple support, commonly used in mining.
Printing and dyeing.
Conveying machinery, etc.