Spherical roller bearings are inherently self-aligning feature, and very strong double rows of rollers make the bearings can withstand heavy loads. SKF invented and improved after years of SKF spherical roller bearings size range is very wide, including individual ISO size series, also includes special designs, such as for bearing shaker and similar applications. Recently, sealed spherical roller bearing series a growing new varieties. Split spherical roller bearings are generally manufactured according to standard bearings, but also according to the requirements of custom.
Spherical roller bearings have two rows of rollers on a common spherical outer ring raceway, and two inner ring raceway, with the bearing axis tilted relative to an angle (Figure 1). This allows the bearing attractive design features, and it can not be substituted in many demanding applications. These bearings have self-aligning function, deformation of the shaft relative to the bearing housing and shaft misalignment or distort insensitive.
SKF spherical roller bearings in a leading position in the design, in addition to withstand high radial loads outside, but also able to withstand high axial loads in both directions.
SKF spherical roller bearings standard scope of supply includes: open bearings - bearings and seals, bearings for vibrating applications.
In addition to the range of standard bearing supply, SKF also offers a wide range of special spherical roller bearings for specific applications.
Spherical roller bearings add code:
Suffixes used to identify certain characteristics of spherical roller bearings, including SKF spherical roller bearings of open design, sealed spherical roller bearings, vibration machinery bearing:
C2: radial clearance less than ordinary group C3: radial clearance greater than Normal C4: radial clearance greater than C3 C5: radial clearance greater than C4
C08: rotational accuracy to ISO tolerance class 5 C083: C08 + C3 C084: C08 + C4
2CS: both sides of the bearing with a steel skeleton of hydrogenated nitrile rubber (NBR) contact seals outer ring with lubrication groove and three lubrication holes, covered by a plastic strap.
2CS2: both sides of the bearing with a steel skeleton fluorine rubber (FPM) contacting the cylindrical outer ring with lubrication groove and three lubrication holes, covered by a plastic strap.
2CS5: both sides of the bearing with a steel skeleton of hydrogenated nitrile rubber (HNBR) contact seals and other 2CS2 same.
HA3: surface hardening of the inner ring
K: tapered bore, taper: 1:12
K30: Tapered bore, taper: 1:30
P5: dimensional accuracy and rotational accuracy to ISO tolerance class 5
P6: the dimensional accuracy and rotational accuracy to ISO tolerance class 6
P62: P6 + C2
VA405: vibration machinery bearing with surface hardened cages
VA406: VA405 and bore with polytetrafluoroethylene (PTFE) coating
VE552 (E): the outer side of the screw holes with three average published to connect the lifting device; E represents bearings with eyebolts
VE553 (E): the VE552 same, but both sides are threaded hole
VG114: surface hardened pressed steel cage
VQ424: rotational accuracy better than C08
W: outer ring without lubrication groove and lubrication holes
W20: outer ring with three lubrication holes
W26: six lubrication holes in inner ring
W33: outer ring with lubrication groove and three lubrication holes
W64: note bearing the solid oil
W77: W33 and the same, but even plug lubrication hole
W513: W26 + W33
235220: hardened inner ring, the inner hole with a spiral groove.