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Single row Cylindrical roller bearings are also manufactured with snap ring grooves on the outer rings. This design simplifies the bearing joint as the bearings are located into the housing by means of the snap rings. Double-row cylindrical roller bearings have high radial rigidity and are used primarily for precision machine tools.The snap ring groove and snap rings are in accordance with IS0 464.Depending on the series as defined below a number of cylindrical roller bearings have no ribs on either the inner or outer ring

There are different types designated NU, NJ, NUP, N, NF for single-row bearings, and NNU, NN for double-row bearings depending on the design or absence of side ribs. Tinmy’s <a href="htt