NSk Cylindrical Roller Bearings
In bearings of this type, the cylindrical rollers are in linear contact with
the raceways. They have a high radial load capacity and are suitable for high
Cylindrical roller bearings, in which either the inner or outer rings has two
ribs and the other ring has one, are capable of taking some axial load in one
direction Double-row cylindrical roller bearings have high radial rigidity and
are used primarily for precision machine tools. Some cylindrical roller bearings
have no ribs on either the inner or outer ring, so the rings can move axially
relative to each other. These can be used as free-end bearings.
There are different types designated as NU, NJ, NUP, N, NF (for single-row
cylindrical roller bearings), NNU, and NN (for double-row cylindrical roller
bearings depending on the design or absence of side ribs). The outer and inner
rings of all types are separable .