advanced search self-aligning ball bearing 2208

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advanced search self-aligning ball bearing 2208
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Advanced search self-aligning ball bearing 2208

Double row self-aligning ball bearings have a sphere raceway in the outer ring and a double raceway in the inner ring. This feature give the bearings their self-aligning property, permitting angular misalignment of the shaft relative to the housing. They are therefore particularly suitable for applications where misalignment can arise from errors in mounting or from shaft deflection.

Double row self-aligning ball bearings are mainly used to carry radial loads and light axial loads, but cann't carry pure axial loads  



Load capacity                 140N/mm2 

Temperature                  -195°C ~ +280°C 

Speed limit                     5m/s 

Friction coef(u)               0.04~0.20 

PV Limit(Dry)                  3.6N/mm2 .m/s 



1.PTFE and fibre can protect the shaft while in operation. 

2.It is suitable for the machine required harmless to people because 

of Lead-free. 

3.Goodload capacity and anti-wear. 

4.Bronze and steel have good thermal conductivity. 

5.Anti-corrosion because of surface plating. 

6.It is widely used in general machines,and suitable for food machine,pharmaceutical 

machine,tobacco machine etc.It will subsitute SF-1 series bushings in future because of environment protection. 



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Q:What is the difference between rolling bearings and plain bearings?
Plain bearing: a sleeve made of copper or porous iron (or copper) material. It has many kinds of structures. Rolling bearings, also called ball bearings, are made of steel balls. The shape and material of the two are obviously different
Q:How do I move the plain bearings?
Sliding bearings and shafts are sliding friction, the sliding bearing itself is a whole, there is no relative movement of ~!
Q:When calculating non liquid friction sliding bearings, what is the purpose of checking P, PV, v?
Check the bearing PV is to control the contact surface, not overheating and lead to bonding.Even if the P and PV are within the allowable range, the bearings may suffer excessive wear due to excessive speed of the bearings. In order to make the local PV value not exceed the allowable value, we must check the sliding speed of bearings with light load, high speed and large elastic deformation.
Q:What are the advantages and disadvantages of plain bearings compared with those of rolling bearings?
Compared with rolling bearings, sliding bearings have advantages:1) the sliding bearing is compact, and the bearing capacity of the plain bearing is much larger at the same size.2) plain bearings allow for high accuracy, low vibration and noise.3) the sliding shaft bears little influence on metal foreign body, and it is not easy to produce early damage.
Q:What is the cause of oil leakage in high pressure motor bearings (plain bearings)?
2, operation and maintenance reasonsExcessive filling of lubricating oil, exceeding permissible horizontal surfaceNo. of lubricating oil gradesThe bearing seat and the occlusal surface at the old tile indirect sealing paint is not clean cleanNew sealing coating uneven filling, and even forget to fill the paintThe gasket is not properly installed
Q:Sliding bearings and rolling bearings of the same point and different points 10
Plain bearings, usually made of bronze or Babbitt, have heavy duty characteristics and require a standing lubrication system to provide lubrication. Light load can be lubricated by powder metallurgy.Ball bearings are usually made of ball bearing steel, which is lubricated with grease and requires regular replacement of the grease. Rolling bearings usually can bear some axial force, but the sliding bearings do not have this function.
Q:Bearing bearing belongs to what type of
The bearing of an internal combustion engine is a sliding component in the sliding bearing of an internal combustion engine. The shape of the Bush is a semicircle cylinder shaped like a tile, called a bush. Because of the heavy weight of the internal combustion engine shaft, the needle roller (bead) bearings can not be used, but only sliding bearings can be used.When the sliding bearing is working, a thin oil film is required between the Bush and the rotating shaft to lubricate the sliding bearing. If due to bad lubrication, there is direct friction between bearing and shaft friction will produce high temperature, while the bearing is due to the special high temperature resistant alloy material, but high temperature direct friction on the burn is still.
Q:Which life is longer, rolling bearings or plain bearings?
Compared with plain bearings, rolling bearings have small coefficient of friction, high accuracy, low wear and long service life
Q:Which is better for plain bearings, copper sleeve and linear bearing?
The sliding bearing with the copper sleeve with high strength copper alloy (CuZn25Al5, CuZn24Al6Fe3Mn4) as the basic material, according to the use conditions according to a certain proportion in the work surface processing hole and fill in the solid lubricant, copper alloy high strength provides high bearing capacity and solid lubricant can form low friction.Linear bearings are made of steel ballsThe bearing of the sliding bearing is larger, the bearing capacity of the linear bearing is smaller, but the accuracy is high
Q:Hello, about the bearing problem. Sliding bearings are made of powder metallurgy. What kind of grease does it use?
Powder metallurgy bearing is lubricated bearings in the factory will be through the vacuum method of negative pressure adsorption added lubricating oil, in the late stage of the process slowly release and consumption, good quality of powder metallurgy bearing life can reach more than ten years.This type of bearing is recommended to not add lubricating oil or grease, add after will have to change the bearings of the environment, such as dust adhesion, friction coefficient change, oil smoothly, when oil was crushed, and the lubrication performance of powder metallurgy bearing itself and do not come out to play, will become very astringent a card, caused by poor lubrication, which often needs to be added, resulting in unnecessary consumption and fee of manpower. Of course, there is a powder metallurgy sliding bearing is not oily, there is grease, add glib, this is often need to add fat.

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