An extra of XRB spherica roller bearing

Yesterday August 11th,2015,the exchange rate of RMB:USD$ suddenly increase to 6.4:1,its mean

complete line of XRB spherical roller bearing price was lower than ever before, for example, the  bearing  22210CA/W33 bearing,the price is USD$10/pcs ,and now according to the new exchange  rate,you can only pay USD$9.67/pcs to get 22210CA/W33,so its very good new for our bearing  importers from abroad,any customers who have the purchase plan for spherical roller bearing of the end of this year,please don't hesitate to contact XRB service team. for convenient to know more about XRB bearing,i list all of the spherical roller bearing as follows.

 

22205E-22264CC/W33 

21305E-21320E

22308E-22356CC/W33

24013CC/W33-240/1120CAF/W33

23220CC/W33-232/750CAF/W33

23122CC/W33-231/1000CAF/W33

24122CC/W33-241/1000ECAF/W33

23026CC/W33-230/1250CAF/W33

 

Above mentioned XRB not only can produce E,CC cage,but also CA/W33,MB,E1, EAE4,CDE4,CJW33, BD1,BS ect. pressed steel and brass cage double-row spherical roller bearing.for single row spherical roller bearing,if you have demand,please send your bearing requirement with quantity and more technical demand of your applications.and i show some information about sealed spherical roller bearing,most of this type bearing is small or middle size,

 

BS2-2205-2CS---BS2-2224-2CS

24013-2CS-VT143---24034-2CS2/VT143

23120-2CS2/VT143---23122-2CS/VT143

24122-2CS2/VT143-24140-2CS

23220-2CS and 23944-2CS 

 

XRB sealed spherical roller bearing is the top quality in China,it can replace the Top brand  bearing of the world,your valuable source of sealed spherical roller bearing.

As one of China bearing manufacturer.XRB sealedspherical roller bearing focus on learned high technology and knowledge from the worldwide spherical roller bearing manufacturer from 1998,and until now,XRB can produce the full-line sealed spherical roller bearing,bearing for vibrating screen equipment,warmly hope the customers from worldwide contact with XRB for sealed spherical roller bearing.

Materials of spherical roller bearing

Spherical roller bearing with chrome steel material is very common in our bearing industry,and this kind of material bearing used brass cage or pressed cage and also can be nylon cage,just like CA(One-piece solid cage),CC(two piece press steel cage),MB(Two piece brass cage),TVPB( nylon cage),and with the spherical rollers ,these design of spherical roller bearing is the widely used in many applications.

 

With the development of industry and the improvement of the market,some application need the spherical roller bearing have the anti corrosion and lower noise ,just like the Medical Devices, Cryogenic Engineering,Optical Instruments,food process machine,so stainless steel spherical roller bearing appeared,this kind of bearing adopted AISI SUS440C(9Cr180Mo) stainless steel material,the cage is AISI304 stainless steel,and working with the high quality lubrication oil or grease,it can working high or low temperature than the chrome steel spherical roller bearing.

 

Theoretically speaking the spherical roller bearing can be made of ceramic material,but its very high cost and less market demand,so we don't talk about this kind of matarial about spherical roller bearing.
 

The raceway of Spherical roller bearing have the radian feature,and also the big and wide size ,so its very difficult in processing then the other kinds of bearings,XRB will supply  Optimization Configuration for your application,for example the selection of size,the cage for the the working condition,the lubrication,the seals and more details,we alway give our valuable customers the best solution of the bearing.

Spherical roller bearing lubrication

Spherical roller bearing need to be lubricated to operate stable and keep the smooth rolling between the raceway and the rollers and the cage,thus it will be decrease the friction of the metals,the lubrication also can keep the surfaces of the spherical roller bearing against corrosion,how to choose the proper lubrition,its very important work,let talk about it.

 

Spherical roller bearing lubrication have so much brand and grade of grease,oils and more the other materials,so its very important to select a right method for lubrication,its according to the spherical roller bearing application's working condition,for example the speed or operating temperature,and the applications also affect  the selection process like vibration and loads demand.

 

Spherical roller bearing have their special design for lubrication, one lubrication groove and three lubrication hole on the outer ring,or lubrication holes on the inner ring,spherical roller bearing usually used the lubrication oil,now let's compare with the grease and oil.

 

Spherical roller bearing grease lubrication can reach 65 percent-80percent of the Oil lubrications for limiting speed,the oil lubrication can release the heat when the bearing working.its very complex when change the grease than oil. normally ,when the bearing operation under 50 degree and little dust we suggest change the oil 1time per year,but if the oil temperature above 100 degree,it must be changed within 3months,and its forbidden to use diffent brand oil work together.

RKB Spherical roller bearing

RKB Spherical roller bearing are made in Switzerland,and other operational activities are located in Ireland,China,Italy,Japan,Vietnam,Mexico and India,RKB has worldwide distribution channel in more than 50 countries.RKB spherical roller bearing are manufactured in conformity with the ISO9001:2002 and ISO 14001:2004 standards.RKB spherical roller bearing can be many cage design according to the different applications,pressed steel cage like CC,brass cage like CA,MA(used in vibration screen equipment),MB,ECA,GHA3, these different cage are all avaible in RKB,as well as XRB bearing company,RKB can produce complete size spherical roller bearing(238,239,230,231,240, 241,248, 249, 222, 232,233,213,223).the small and medium size spherical roller bearing usually fitted with pressed steel cage or machined brass cage,for large size spherical roller bearing usually used machined brass cage or cast iron cage.

RKB spherical roller bearing not only supply open design,but also the sealed spherical roller bearing (suffix 2CZ1) and special bearing for Vibratory application(suffix ROVS),RKB supply customized for specific applications like bearing with split outer ring and wider outer ring for higher permissible misalignment(suffix WOR) or with increased width dimension and consequent larger rollers for milling applications(project designation SRB) or for the support of the rolls of cold rolling Pilger Mills for tubes.

RKB spherical roller bearing have tapered bore(1:12 or 1:30) or cylindrcal bore,24000 series spherical roller bearing are all have tapered bore 1:30,tapered bore bearing can be working together with sleeve on the cylindrical shaft,spherical roller bearing are provide lubrication groove and lubrication hole in the outer or inner ring(suffix W33,W26,W20),Sealed spherical roller bearing is one kind of RKB bearing design,the sales can be reinforced steel sheet or wear resistant rubber(suffix 2CZ)it can withstand operating temperature up to about +200°C 

As one of China bearing manufacturer.XRB spherical roller bearing focus on learned high technology and knowledge from the worldwide spherical roller bearing manufacturer from 1998,and until now,XRB can produce the full-line sealed spherical roller bearing,bearing for vibrating screen equipment,warmly hope the customers from worldwide contact with XRB for sealed spherical roller bearing.

Why spherical roller bearing failure

When the machine operation,sometimes the spherical roller bearing failure,its very big trouble ,before the spherical roller bearing failure,it usually become very hot of the bearing,there are many cause bearing overheating,so we need to inspect the reason step by step,at the first time we need to check if the machine problem,sometimes because of its parts,for example the tolerance of the parts,the concentricity problem of the house,cover,shaft ect.,maybe its very tight between inner ring and outer ring,and also maybe the installation of the unit,let us see some reasons make the spherical roller bearing failure.

1.Spherical roller bearing was broken,so it must be changed new .

2.Low lubrication or much more iron filings and impurities exist,bearing grease should not exceed the capacity 70 percent of the total volume,if the dust existed in the raceway of the spherical roller bearing,it should be change new one,low quality lubrication grease or bad bearing maintenance cause the lubrication grease failure

3.Shaft and spherical roller bearing working together too tight or loose,so we need to re grinding if too tight,if too loose,engineer need to add a bush for the spherical roller bearing.

4.Spherical roller bearing and the cover operate too tight or too loose,so we have to precess the bearing house if too tight,or add a sleeve for the cover if too loose.

5.The cover of the motor ends or cover of the bearing is defective assembly,make sure the cover of the bearing is assembly well

6.Belt too tight or poor coupling assembly,adjust the tension of the belt,correct the coupling.

7.Too little lubrication oil of spherical roller bearing,dust exist or oil ring plugging,so we need to increase the oil,change new lubrication oil,repair or change oil ring.

Spherical roller bearing cage CA & CC

Cage is one of the four elements of spherical roller bearing,it affects the performance and service life of the spherical roller bearing directly,what is the most important is the material,the material of the cage should have high mechanical strength,good wear resistance,the impact of fluctuating load and excellent dimensional stability and the other characteristics. for double row spherical roller bearing,we usually used the materials:Quality carbon structural steel strip,steel plate,High tensile strength solid machined brass cage,Plastic cage, etc.

 

the CA cage design of spherical roller bearing was developed in 1950s,the spherical roller bearing CA have solid machined cage and enhanced Symmetrical rollers,compared with CC structure,CA design adopted high tensile strength brass cage,it has a certain self-lubricating properties,and allow a certain degree of plastic deformation,under the current restrictions mold process conditions,CA cage its better than CC design in the case of low noise requirements. meanwhile,CA cage take more internal space of spherical roller bearing,so the dimension of the elements and quantity would be effected,thereby reducing the possibility of further increase its radial load capacity.

According to ISO standard,the CA cage design can be replace the CC cage if the basic conditions (load rating,limiting speed,Operation Temperature,noise vibration) coincide with design structure limit.in fact the spherical roller bearing service life,in addition to bearing own quality assurance,the bearing type choice and bearing installation,use,maintenance is also affect the performance of the spherical roller bearing.

Stainless steel spherical roller bearing design

Stainless steel spherical roller bearing is new design of spherical roller bearing family,this kind of bearing have the same with traditional,what is the different is that the traditional bearing used chrome steel material,so the stainless steel spherical roller bearing adopted stainless steel,the inner & outer & element & rollers are all adopt AISI SUS440C（the same standard with 9Cr18 or 9Cr18Mo), after heat treatment under Vacuum process,the cage used AISI316 or AISI304(OGr18Ni9)material, the precision can be P6 according to the ISO standard.

Stainless steel spherical roller bearing have stronger anti-rust and Corrosion than normal spherical roller bearing,working with the good quality Lubricants and shields,it can working under the environment high temperature -60C~+300C,stainless steel spherical roller bearing can carry higher mechanical strength and stronger load capacity,this kind of bearing are widely used in food machinery,printing-make machine,pulp and paper industry etc.,it can reduce the unplanned downtime,improve reliability than the normal spherical roller bearing,also reduce the maintenance costs and boost productivity,extend service life becuase of stainless steel.

http://www.xrbearing.com/html_news/Stainless-steel-spherical-roller-bearing-introdution-58.html