Effect of temperature on the sealed spherical roller bearing

Effect of temperature on the sealed spherical roller bearing

 

When the sealed spherical roller bearing operation,the size of sealed spherical roller bearing will be change due to the changed of material structure.this transition is influenced by temperature,time and stress,

 

In order to avoid the size change which is not allowed once the material structure changed,the material of sealed spherical roller bearing must be special heat treatment.standard sealed spherical roller bearing are made of high quality steel which is on process of special heat treatment.the suggested temperature is between 120 degree to 200degree.there have direct relationship of the highest temperature with the technoloty of heat treatment,if some special application need higher tempature than normal level,high stable progresstion of sealed spherical roller bearing should be choosen.once the sealed spherical roller bearing need operation under the high temperature long time,the capacity need to adjusted.

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calculation of the load of Sealed spherical roller bearing 24026-2CS2/VT143

Sealed spherical roller bearing 24026-2CS2/VT143 is used in Heavy duty transportation of Steel Mill,its working condition under the work cycle are details:   The inertia of the load Sealed spherical roller bearing 24026-2CS2/VT143 is considered in the calculation of the static load and the impact load caused by accident when loading and unloading,so if the hypothesis is accurate enough,it need to check the dynamic load and static load of the application can meet the required working life 60000hours and minimum static load safety factor.the rated life is 84300hours under the combined conditions,there is no problem for the required working life,so the dynamic load condition of sealed spherical roller bearing 24026-2CS2/VT143 is verified.    How to calculate the safety factor of dynamic load and static load of sealed spherical roller bearing 24026-2CS2/VT143,please contact with XRB technical department. www.xrbearing.com Skype:brandbearings E-mail:brandbearings@gmail.com

The friction of sealed spherical roller bearing

The friction of sealed spherical roller bearing

 

Friction is the main cause for sealed spherical roller bearing heating,therefore,its also the key factor to determine the temperature of the bearing.

The friction depends on the load and several the other factors,what is the most important is the dimension and speed of sealed spherical roller bearing,characteristics and volume of the of lubricant,the total resistance when sealed spherical roller bearing rotating,is composed of a rolling and sliding friction between parts,including the contact between the spherical rollers and cage,the friction between guide surface and rollers & cage,and also the friction between lubrication and sliding friction of the contact sealing.when the clearance or alignment error of the sealed spherical roller bearing change,the friction torque would be change also,the sealed spherical roller bearing under high temperature and high speed working situation,internal clearance would be decrease,so the friction would be increase.

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The speed of sealed spherical roller bearings

The speed of sealed spherical roller bearings

 

The speed of sealed spherical roller bearing can reached is limited,its usually determined by the temperature of lubricant & the material of bearings and the rubber sealing,the speed of sealed spherical roller bearing at the working temperature limited,depending on the heating generated by friction of the bearings and how much heat can be taken away from the bearing.

 

The dimension of sealed spherical roller bearings,internal structure,Load carrying capacity,lubrication and cooling coditions,the structure of the cage,precision and clearance ,these factor are all certain effect on the speed of the bearing.


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The Factors affect the quality of the sealed spherical roller bearing

The Factors affect the quality of the sealed spherical roller bearing

 

The material for manufacturing sealed spherical roller bearing,have great influence on the performance and reliability of the bearing,normally speaking,the factor we need to consider is teh ring and rollers of the sealed sphercal roller bearing,the hardness for carry capacity, fatigue resistance of lubrication conditions like the rolling contact and different cleanliness.and the stability of the dimension,for teh cage of sealed spherical roller bearing,the friction, need to be considerable,Inertia force,and also the Chemical action just like lubricat，Solvent， Coolant，Refrigerant etc.The relative importance of these considerations is also influenced by other operating parameters.and more combined effect such as corrosion,high temperature,impact load ect.

 

The sealing of the sealed spherical roller bearing is also have a great effect on the performance and reliability of the bearing,the materials of the sealing must have good performance on oxidation resistance,heat resistance,or anti chemical corrosion.XRB Bearing manufacturing Co.,Ltd(China bearing manufacturer) can manufacturing high quality sealed spherical roller bearing for meet the high quality requirement of the high level market demand.

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The Material of Sealed spherical roller bearing

The Material of Sealed spherical roller bearing

 

Sealed spherical roller bearing adopt the most widely used Quenching chrome steel,the carbon  chromium steel conform with ISO0683-17:1999,contain approximately 1% carbon and 1.5%  chrome.because of sealed spherical roller bearing service life is increasing,carbon chromium 

steel is still the longest history of useful and most comprehensive research steel,this chrome steel are achieve the best balance both in the manufacture and applications,the chrome steel used in manufacture sealed spherical roller bearing are usually under process of heat treatment of martensite or bainite.hardness range between 58-65HRC.

 

Along with the development of steelmaking technology,the purity of steel is achieve higher standard.its play very important role in the quality and consistency of XRB chrome steel,XRB (China Bearing manufacturer)sealed spherical roller bearing adopted high quality chrome steel with very few Non metallic inclusion and oxygen content.

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Suffix of sealed spherical roller bearings

Suffix of sealed spherical roller bearings

 

Sealed spherical roller bearings have the same internal design with open spherical roller bearings, we design the suffix of sealed spherical roller bearings,for easier to distinguish the sealed and open bearings,expect the width of BS2-22 and BS2-23 series sealed bearing are bigger than 222 and 223 series bearings,the others are all the same designation dimension.

 

China bearing manufacturer ,XRB Sealed spherical roller bearing normally with cylindrical bore,but most of BS2-22 series bearing can supply design with tapered bore,according to special demand of customers,once the quatity is OK,each of sealed spherical roller bearings can be with tapered bore,now we show the suffix of sealed spherical roller bearings as follows:

 

C2 Radial clearance small than normal clearance
 

C3 Radial clearance larger than normal clearance
 

C4 Radial clearance larger than C3
 

C5 Radial clearance larger than C4
 

2CS Hydrogenated nitrile rubber contact sealing with steel rib on double sides,lubrication 

on outer ring and three holes  
 

2CS2 Viton (FPM)contact sealing with steel rib on double sides,lubrication on outer ring and 

three holes,inject Polyurea high temperuture grease
 

2CS5 Hydrogenated nitrile rubber contact sealing with steel rib on double sides,the others 

is the same with 2CS2
 

K:tapered bore，Taper 1:12
 

K30：tapered bore,taper:1:30
 

VT143 inject extreme pressure grease

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