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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.

170 mm x 280 mm x 109 mm ISB 24134 spherical roller bearings
54 kN
57,4 Tolerance h14
260 mm x 480 mm x 130 mm ISO 22252 KCW33+H3152 spherical roller bearings
N/A
0.911
190 mm x 320 mm x 128 mm ISB 24138 spherical roller bearings
54 kN
57,4 Tolerance h14
Toyana 22326 MAW33 spherical roller bearings
N/A
IKO
20 mm x 52 mm x 18 mm SKF 22205/20 E spherical roller bearings
sealed
130,175
440 mm x 720 mm x 226 mm SKF 23188 CA/W33 spherical roller bearings
54 kN
57,4 Tolerance h14
280 mm x 460 mm x 146 mm KOYO 23156R spherical roller bearings
sealed
130,175
260 mm x 400 mm x 104 mm NKE 23052-K-MB-W33+OH3052-H spherical roller bearings
sealed
130,175
170 mm x 280 mm x 88 mm ISO 23134 KCW33+AH3134 spherical roller bearings
straight
0.095
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6204 Bearing
lm11949 Bearing
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