Sealed spherical roller bearing installation or removal

When the sealed spherical roller bearing installation or removal,its easier if we adopt Clearance fit than interference fit,once we have to use interference fit under some particular working situation ,at the meanwhile the sealed spherical roller bearing must be easy installation and removal,its better to choose tapered bore sealed spherical roller bearing,so this kind of sealed spherical roller bearing can be installed to the neck journal with tapered bore,as well as install in the optic axis or multi-diameter shaft working with adapter sleeve and withdrawal sleeve.

XRB as the experienced China bearing manufacturer & factory & exporter & supplier ,it can supply Original Plummer block housing with sealed spherical roller bearing,Our large quantity plummer block housing with sealed spherical roller bearing Stock can meet your need for quality wth lowest price and fast delivery.We accepted DHL,FEDEX,TNT express for small order and samples order,also the transportation By AIR or By Sea,by Train are all avaiable.we are sure we can ship SNL3134 Plummer block housing to your office at the first time.More technical details,please contact with :

E-mail: brandbearings@gmail.com, Skype:brandbearings

Sealed spherical roller bearing benefits

Sealed spherical roller bearing offer long-life performance,are very highly reliable under harsh & contaminated conditions. and promate a clean working environment,XRB (China bearing manufacturer) can supply high quality sealed spherical roller bearings   1.Nitride rubber seal – or differing seals depending on temperature needs. 2.Special long-life grease: heat & pressure resistant 3.Symmetrical roller & raceway design to prevent edge loading problems. 4.Special chamfer configuration for smooth axial movement. 5.Available in sealed-clean or grease replenishing types, with shields.   Sealed spherical roller bearings benefit are characterised by:  *very high basic dynamic and static load ratings  *lower frictional torque compared to the competition  *environmentally friendly characteristics  *lower grease consumption and disposal costs  *no requirement for expensive relubrication systems  *reduced maintenance outlay  *simple reconditioning of series 240 and 241  *longer operating life of the bearing.  *Seals design secures seal dislodging & better running.  *Symmetrical rollers operate under high-load conditions  *Available in sealed-clean or grease replenishing types, with shields.   The seals for these bearings are made of rubber and reinforced with a steel plate. The options available are made of materials resistant to wear and lubricating oil, such as:   - nitrile rubber (NBR): suffix ORN   - hydrogenated nitrile rubber (HNBR): suffix ORH   - fluorinated rubber (FKM): suffix ORF XRB (China bearing manufacturer) can supply high quality sealed spherical roller bearings, The internal design of a sealed bearing corresponds to that of an open bearing. The external  dimensions are also the same except for bearings based on the 222 and 223 series. These  bearings are slightly wider and carry the series designation LB-22 and LB-23 respectively.Sealed two-row spherical roller bearing have three barrier protection including sealed two-row spherical roller bearing,bearing body filled in 70% to 90% with grease and external labyrlth seal,representing a very efficient solution.

NSK spherical roller bearing

NSK spherical roller bearing suffix

 

NSK spherical roller bearing are double row self-aligning bearings capatable of carrying heavy radial loads combined with moderate thrust loads in both direction,it have brass cage and pressed steel cage,the chamfer of NSK spherical roller bearing is black,this design is good for rust protection,they are extremely resistant to shock loads and their self-aligning feature allows full capacity loading despite shaft deflection.

 

Basic Type:

22200:Spherical roller, medium

22300:Spherical roller, heavy

23000:Spherical roller, very light

23100:Spherical roller, light

23200:Spherical roller, medium, wide

23900:Spherical roller, extra light

24000:Spherical roller, very light, wide

24100:Spherical roller, light, wide

 

Lubrication feature of NSK spherical roller bearing

 

E3: Holes only,outer

E4: Groove & holes,outer

E7: Groove & holes,outer & inner

E8: Outer ring with tapped holes in both faces for lifting + E4 feature

 

Bore Type

Blank:cylindrical bore

K:    1:12 tapered bore

K30:  1:30 tapered bore

 

other feature of spherical roller bearing

P52: Outer ring accuracy

P53: Inner ring accuracy

P55: Both ring accuracy

U22: Special inspection measure

 

S11: Inner and outer ring Heat stabilized to 200°C

 

Cage design of NSK spherical roller bearing

 

CAM:One piece brass cage,guide ring

C,CD:two pcs pressed steel cage guide ring

EA:high capacity steel cage

H:two pcs polyamide cage

M:two pcs brass cage

 

For example 23172 CAMKE4C3P53S11,it mean 23172 bearing,Brass cage,1:12 tapered bore,groove & holes,outer ring,C3 clearance,inner ring accuracy and heat stabilized to 200°C both inner and outer ring.

 

More suffix of NSK Spherical roller bearing

 

C2:tight

black:normal

C3:Loose

C4:Extra loose

g:carburized steel,complete bearing

g3:carburized steel ,inner ring only

E42:PLUGS PROVIDED FOR OUTER RING HOLES

E4P55:COMBINATION W33, W4, W31

E4U22:COMBINATION W33, W31

E7U22:COMBINATION W33, W26, W31

P52:OUTER RING WITH EXTRA CLOSE RUNNING ACCURACY

P53:INNER RING WITH EXTRA CLOSE RUNNING ACCURACY

P55:INNER AND OUTER RING W/EXTRA CLOSE RUNNING ACCURACY

U22:SPECIAL INSPECTION MEASURES

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.

Improvement of technology of spherical roller bearing

As we know,the base accuracy of inner ring of spherical roller bearing was damaged under grinding operation,Lead to higher Machining accuracy in the preceding process has been reduced,in severe cases leas scrap.just like the outer diameter of inner ring of the 22215CA/W33 spherical roller bearing,outer diameter is the base standard when griding processing,its related to the accury of the inner ring precision directly,and the width of outer diameter is a little narrow when the spherical roller bearing design,when grinding processing we usually adopted electromagnetism centerless fixture,the support point is cemented carbide,after rough grinding of the inner ring and raceway,base line was weared and reduced precision,so the coming process cannot sure about the quality of spherical roller bearing,after inspection of 22215CA/W33 we got the result ,the round average of outer diameter is 2.7μm after grinding,and the round average of inner ring and raceway increase to 10.6μm.

 

So we change the old technology ,grinding end of the ring→rough grinding outer diameter→super grinding outer diameter→rough inner diameter→rough grinding raceway→super grinding inner diameter→super grinding raceway, change new mathod grinding end of the ring→rough grinding outer diameter→grinding outer diameter→rough grinding inner diameter→rough grinding raceway→good grinding raceway→grinding outer diameter→grinding inner diameter→grinding raceway→super grinding raceway, after the new technology production,the quality of spherical roller bearing can be reach 70% of the FAG,NSK spherical roller bearing service life.

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.

FAG sealed spherical roller bearings

FAG sealed spherical roller bearings

 

FAG sealed spherical roller bearings also named sealed self-aligning roller bearing,its special design for some special applications where need clean and maintenance-free environment.Sealed spherical roller bearing have double row barrel rollers,two raceway on the inner ring and one raceway on the outer ring,the spherical rollers orient themselves freely on the concave outer ring raceway. as a result,shaft flexing and misalignment of the bearing seats are compensated. 

 

Sealed spherical roller bearing have advantage than normal self-aligning roller bearings.

 

1.very high basic dynamic and static load ratings.

2.lower frictional torque compared to the competition

3.lower grease consumption and disposal costs.

4.no requirement for expensive relubrication systems

5.longer operating life of the bearing

 

Sealed spherical roller bearing are suitable for many applications like continuous casting  plant, conveyor belts,elevator plant and the food industry.FAG sealed spherical roller bearing series 222,223,230,231,232 bearing with an oversize width are identified by the prefix WS(WS=Wide Size) like WS22215-E1-2RSR,the cage of self-aligning roller bearing have solid brass cage and sheet steel cage design,FAG adopt lubricant KP2K-20 for sealed spherical roller bearing,it can working reliable under the temperature range of -20 to +130 degree, 20% to 40% grease fill level in the bearing is interior.

 

In the standard version,sealed spherical roller bearing with designation WS have a circumferential groove and three lubrication holes in the outer ring,bearing with F-numbers have no circumferential groove and no lubrication holes.the contact seals are made from nitrile rubber(NBR),suitable for temperatures of -40+100 degree(short periods up to +120 degree).

 

FAG sealed spherical roller bearing can be interchange each other with  EASIER,NSK,NTN,SKF, ZKL, NACHI sealed spherical roller bearing,the seals are made from Rubber or metal shield,they have the same function for keep the internal of spherical roller bearing cleaning and free relubrication,

 

WS22205-E1-2RSR

WS22206-E1-2RSR

WS22207-E1-2RSR

WS22208-E1-2RSR

F808529.PRL

WS22209-E1-2RSR

WS22210-E1-2RSR

WS22211-E1-2RSR

WS22310-E1-2RSR

WS22212-E1-2RSR

WS22312-E1-2RSR

WS22213-E1-2RSR

WS22314-E1-2RSR

WS22214-E1-2RSR

WS22215-E1-2RSR

F-803042.PRL

WS22216-E1-2RSR

WS22217-E1-2RSR

F-803007.PRL

F-803031.PRL

WS22218-E1-2RSR

F-803007.PRL

F-803031.PRL

WS22218-E1-2RSR

F-803008.PRL

F-803032.PRL

WS22220-E1-2RSR

F-803000.PRL

WS22222-E1-2RSR

F-803013.PRL

F-803063.PRL

24122-E1-2VSR-H40

F-803034.PRL

WS22224-E1-2RSR

24024-E1-2VSR-H40

24124-E1-2VSR-H40

WS22226-E1-2RSR

F-803045.PRL

24026-E1-2VSR-H40

24126-E1-2VSR-H40

F-803051.PRL

F-803061.PRL

24028-E1-2VSR-H40

24128-E1-2VSR-H40

24030-E1-2VSR-H40

24130-E1-2VSR-H40

F-803010.PRL

24032-E1-2VSR-H40

24132-E1-2VSR-H40

F-803057.PRL

24034-E1-2VSR-H40

24134-E1-2VSR-H40

24036-E1-2VSR-H40

24136-E1-2VSR-H40

F-803039.PRL

F-809822.PRL

24038-E1-2VSR-H40

24138-E1-2VSR-H40

F-803046.PRL

F-803067.PRL

24040-E1-2VSR-H40

24140-E1-2VSR-H40

F-808418.PRL

F-803054.PRL

F-803053.PRL

24144-E1-2VSR-H40

F-803056.PRL

 

More information please contact with www.xrbearing.com

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.

China spherical roller bearing manufacturers

Spherical roller bearing manufacturers of China   Spherical roller bearing also named self-aligning roller bearing,this kind of bearing is widely used in Heavy duty Industrial applications like Rolling Mill,paper-making machine,metallury ,Cement ,wind power etc.,this kind of bearing must be high quality level,there are some famous brand like FAG from Germany,TIMKEN from America,NSK,NTN,KOYO,NACHI from Japan,ZKL from Czech,ZWZ,TWB, EASIER from China,this time we introduce the spherical roller bearing manufacturers of China. Spherical roller bearing manufacturer located in three place in China,Dalian,Wuxi and Shandong.   ZWZ belong to Wafangdian bearing group company,this factory located in Wafangdian city of Liaoning, the North-East area of China,ZWZ is the first bearing manufacturer and the industrial foundation of China,it can manufacture different structure double-row spherical roller bearing,split spherical roller bearing according to the customers demands,ZWZ spherical roller bearing can be design with CA brass cage,PO,P6 precision grade can be produced,P5 grade bearings can be customed by customers requirement,and at present ZWZ manufacture pressed steel spherical roller bearing with suffix(CC),ZWZ spherical roller bearing is the top quality in China.   TWB spherical roller bearing is located in Wuxi city,Jiangsu Didabei bearing company is proud of its quality in spherical roller bearing,TWB feature:   1.low speed,high resistance to impact,vibration 2.able to self-aligning 3.mainly bear big radial load 4.can take fair axial load   TWB spherical roller bearing can be different design with C cage,As second generation design, it features a stamped steel cage and strengthened symmetric roller and can offer considerable higher load ratings than conventional designs. As an alternative design of second generation, it features a precise machined brass cage and strengthened symmetric roller and has equal load ratings with C design. Therefore it can replace C design, especially for large size bearing.TWB spherical roller bearing used in primary metal,power transmission,coal mining machinery,paper making machinery,hoisting&conveying machinery,Elevator equipment and the other applications.   XRB comes from XRB-ZWA BEARING INDUSTRY CO.Limited,its products including:   single row spherical roller bearing, double row spherical roller bearing, sealed spherical roller bearing, split spherical roller bearings   XRB bearing can supply complete size spherical roller bearing with CA,CC cage in our stock, Pressed steel cage E,E1,EAE4 and Brass cage (MB) also can be avaiable for most of the size, EASIER is the exclusive manufacturer who can produce full size sealed spherical roller bearing and single row spherical roller bearings,this brand only supply the top quality for its customers all over the world. 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.

spherical roller bearing size chart

spherical roller bearing size chart
 

Many spherical roller bearing end user have so many question about of this kind of bearings--spherical roller bearing size,this time let us show you the spherical roller bearing size chart,you can see clearly about the common spherical roller bearing.

 

First of all,what is spherical roller bearings, we can see on the words,its must be have spherical rollers,and there are one spherical raceway on the outer ring and two raceway on the inner ring,some design of spherical roller bearing used the brass cage(CA,MB,MA,M),Some design need pressed steel cage(E,E1,CC,CD,EJ,EA),some special appliations like vibrating screen equipment we adopt the special cage design to meet the high demand about the bearings,and now i show the spherical roller bearing size chart for your reference:


These are some  size of our spherical roller bearing,and more 23000 and 24000 series spherical roller bearing and more special spherical roller bearing we can supply,just contact with our sales team.

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.

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