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
