ULTAGE spherical roller bearing

ULTAGE spherical roller bearing is new products by NTN and SNR,ULTAGE bearing offer a wide 

range of spherical roller bearing for the customers demand,they can design and produce different cage versions.from 25mm bore to 2180mm outer diameter can be found in ULTAGE,

 

SNR spherical roller bearing was named SRO which are created by Swiss blacksmith in 1916, and  it become SNR Societe Nouvelle de Roulements" in 1946,SNR developed its commercial network in France and Europe,and become No.1 for bearing in France and 4th in Europe in 1956, SNR has held the speed record with the fastest train in the world in 1981,and now SNR bearing are widely used in high quality and precision application demand like train,aerospace,automotive.

 

NTN was founded began research and manufacture of ball bearings at Japan in 1918, NTN spherical roller bearing appeared on the market in 1922,NTN expand his business in Germany since1961,NTN established NTN France S.A. and NTN Bearing UK ltd in 1964,NTN group completed full certification for the ISO9000 series in 2000,and all NTN plants completed certificated for the ISOTS16949 series in 2005.

From above mentioned,you can see SNR and NTN have the same history and background,so its  easy conbined together to become stronger worldwide and to improve their position in Europe,

Ultage spherical roller bearing have 4 cages and 5 specific solutions,

 

1.EA series cage,its pressed steel cage,the same with EASIER spherical roller bearing CC Cage

2.EM series and L1 series ,machined solid brass cage,with same with EASIER bearing CA cage

3.EF800 series ,special design cage for vibrattion screen, the same with CCJA cage of EASIER

4.EG15 series,polyamide cage,the same cage with EASIER E1.TVPB bearing

 

The internal design of double row spherical roller bearing enables them to carry very high capacity from both directions,it consist of inner ring(raceway on outside,tapered bore or cylindrical bore),outer ring(spherical raceway inner side and lubrication groove and lubrication hole outside),double row symmetrical spherical rollers held in cages.

 

NTN SNR"Premium Quality" spherical roller bearings can supply Optionmised design,no central rib but not 240 and 241series,more larger and longer rollers than traditional design,so its increased load capacities, let us see some new features of NTN-SNR spherical roller bearing,surface optimisation,steel cage with surface treatment,noise reduction, reduced friction torque, increased operating speeds, increased service life,improved performance,reduced operating costs,

 

NTN-SNR ULTAGE spherical roller bearing are widely used in Paper industry,Mines,Quarries and cement works,Steel industry,Transmissions,Wind farming,Rolling Mill,High vibration applications,at the end,XRB show some prefixes and suffix of NTN-SNR spherical roller bearing:

 

E   case-hardening steel 

6E  Case-hardened inner ring

TSx Temperature-stabilised version(up to +250degree)

WA  LLS sealed version

10X Non-ISO ring width,Origin EE sealed version

A   Two steel plate cages with window centred on the inner ring

B   Optimised internal design ,asymmetrical rollers

C2  Internal radial clearance less than normal

C3  Internal radial clearance greater than normal 

C4  Internal radial clearance greater than C3

C5  Internal radial clearance greater than C4

EE  Reinforced seal properties on both side of the bearings

F800 bearing with solid cage for high vibration applications,C4 clearance

F801 the same with F800,But C3 clearance

F802 the same with F800,But CO clearance

G15  Two glass fibre reinforced polyamide cages

K    Tapered bore,taper1:12

K30  Tapered bore,taper1:30

L    Modified internal design

M    One-piece solid brass cage ,centred on rollers

N    Lubrication groove on outer ring,

D1   Groove and lubrication hole on outer ring

UA   Bearing with asymmetrical rollers and solid cage centred on the outer ring for high-vibration applications

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.

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spherical roller bearing installation

Many bearing user don't understand clearly about spherical roller bearing installation, now let me talk about this,spherical roller bearing is consist of inner ring,outer ring,spherical rollers and cage,there are two raceway in the inner ring and one spherical raceway in the outer ring,the center of curvature of the raceway in outer ring is coincident with the centre of the bearing,so spherical roller bearing have the self-aligning function like the self-aligning ball bearing, when deflection occured between shaft and housing ,it can adjust the capacity and shaft load in double directions,Large radial load capacity are used in high capacity and shocked load, the tapered bore inner ring of the bearings can be installed directly,or using an adapter sleeve to install on the cylindrical shaft,the cage can be Pressed steel,brass materials.

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.

www.xrbearing.com

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E-mail:brandbearings@gmail.com

NACHI spherical Roller Bearing

NACHI spherical Roller Bearing comes from NACHI-FUJIKOSHI CORP,JAPAN who founded in December 21,1928,he expanded its operations into fields of tools and bearing based on quality  materials,the only one company in the world is so involved in machining equipment like tools ,robots ,bearings,hydraulic equipment and materials.spherical roller bearing must adopt high quality chrome steel materials and also carburizing steel for special applications,it can sustain radial and axial loads.for the size and configuration of NACHI spherical roller bearing,you can see the the following table:

we can see that there are the similar design with the other brand spherical roller bearing,NACHI spherical roller bearing have pressed steel and brass cage also,Most of NACHI spherical roller bearing have lubrication groove and lubrication holes on the outer ring,so its easy to feeding lubricant when maintenance for the machine,the suffix of NACHI spherical roller bearing W33 mean lubrication holes and groove,for example 22330EW33,W20 mean lubrication holes,for example 22330EW20.

Radial Internal Clearance of Spherical Roller Bearings with Cylindrical Bore (ISO)

Radial Internal Clearance of Spherical Roller Bearings with Tapered Bore (ISO)

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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.

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.

www.xrbearing.com
Skype:brandbearings
E-mail:brandbearings@gmail.com

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.

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.

www.xrbearing.com

Skype:brandbearings

E-mail:brandbearings@gmail.com

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.

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.

www.xrbearing.com
Skype:brandbearings
E-mail:brandbearings@gmail.com

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.

www.xrbearing.com
Skype:brandbearings
E-mail: brandbearings@gmail.com