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Spherical Roller Bearings

Internal operating clearance of a spherical roller bearing — the space between the rollers and the outer ring, — can also be critical to the application. Internal operating clearance is also encoded in the nomenclature. For example, a suffix could be shown as C2, C0, or C3, with C0 representing normal tolerance; C2, less clearance than normal; and C3, more. Be sure to check nomenclature designations on a given bearing with a catalog from the maker of that bearing to assure meanings of all suffixes in the nomenclature. There are some variations among manufacturers.
As an example of the usefulness of operating clearance suffixes in bearing nomenclature, high-temperature or highspeed applications provide better service if additional clearance (C3) is provided. Lower clearance (C2) may increase service life in a heavily loaded, low-speed application, because more roller surface is in contact with raceways.

130 mm x 200 mm x 52 mm SKF 23026 CCK/W33 spherical roller bearings
sealed
130,175
190 mm x 340 mm x 92 mm NSK 22238CAE4 spherical roller bearings
54 kN
57,4 Tolerance h14
900 mm x 1580 mm x 515 mm NSK 232/900CAE4 spherical roller bearings
straight
0.095
130 mm x 280 mm x 93 mm KOYO 22326RHRK spherical roller bearings
straight
0.095
Toyana 23096 KCW33+H3096 spherical roller bearings
N/A
0.911
300 mm x 540 mm x 140 mm FAG 22260-K-MB + AH2260G spherical roller bearings
N/A
0.911
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6204 Bearing
lm11949 Bearing
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