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SPHERICAL ROLLER BEARINGS

Spherical roller bearings are manufactured as one standard type. The catalogue table specifies the basic designations of bearings that comply with GOST and/or ISO international standards. A system of suffixes shown below is used to name different type variants. You may contact our services to determine the availability of specific types, obtain additional product parameters that were not included in the catalogue, and discuss your specific requirements for bearing design with our specialists.

DESIGNATION FORMULA

Basic
designation

Internal design
(without suffix,
CA, CC)

External design
(without suffix,
K, K30)

Cage
(without suffix,
MA, MB)

Lubrication
(without
suffix, W33)

Accuracy; internal
clearance
(without suffix,
P6, C2, C3, C4)

SUFFIXES AND PREFIXES DESIGNATIONS

without suffix     retaining ribs on the inner ring; cylindrical bore; two stamped steel cages;

                           dimensional and running accuracy to normal class; normal internal clearance;

                           without annular groove and lubrication holes in the outer ring
          CA            retaining flanges on the inner ring, guide ring centered on the inner ring,

                           machined brass cage
          CC            ribless inner ring, guide ring centered on the inner ring, two stamped steel cages
            K             
tapered bore, taper 1:12
          K30          tapered bore, taper 1:30
          MA            ribless inner ring, guide ring centered on the outer ring, two machined brass cages

          MB            ribless inner ring, guide ring centered on the inner ring, two machined brass cages

          P6             dimensional and running accuracy to ISO tolerance class
          С2            radial internal clearance smaller than normal
          С3            radial internal clearance greater than normal
          С4            radial internal clearance greater than C3

         W33          аnnular groove and three lubrication holes in the outer ring

SPHERICAL ROLLER BEARINGS

SPHERICAL ROLLER BEARINGS WITH RIBS ON
THE INNER RING
Internal design variations: Without suffix; CA suffix

SPHERICAL ROLLER BEARINGS WITH THE RIBLESS INNER RING
Internal design variations: CC; MA; MB suffixes

SPHERICAL ROLLER BEARINGS ON THE INNER RING WITH TAPERED BORE , TAPER 1:12
External design: K suffix

SPHERICAL ROLLER BEARINGS ON THE INNER RING WITH TAPERED BORE , TAPER 1:30

External design: K30 suffix

              Designation                     Dimensions           Weight             Load ratings                          Limiting speed ratings (R/min)

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