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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.

480 mm x 790 mm x 248 mm NSK 23196CAE4 spherical roller bearings
sealed
130,175
670 mm x 1 090 mm x 336 mm NTN 231/670B spherical roller bearings
sealed
130,175
200 mm x 460 mm x 145 mm ISB 22344 EKW33+AOH2344 spherical roller bearings
54 kN
57,4 Tolerance h14
140 mm x 250 mm x 68 mm NTN 22228B spherical roller bearings
N/A
0.911
710 mm x 950 mm x 180 mm NKE 239/710-K-MB-W33 spherical roller bearings
straight
0.095
800 mm x 1150 mm x 258 mm ISO 230/800 KW33 spherical roller bearings
54 kN
57,4 Tolerance h14
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6204 Bearing
lm11949 Bearing
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ucf 204 Bearing
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