One-Row Cylindrical Bearings
One-row, or single-row, cylindrical bearings are available in six types: NU, N, NJ, NF, NP, and NUP. Industry standard nomenclature is listed in parenthesis below.
NU (RIU, RU)
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N (RIN, RN)
NJ (RIJ, RJ)
NF (RIF, RF)
NP (RIT, RT)
NUP (RIP, RP)