Track roller bearings
Demension: 25*52*25mm, Weight: 0.28kg.
The rollers in a single row cylindrical roller bearing are always guided between the integral "open"
flanges on one of the rings. These "open" flanges combined with the specially designed and surface treated
roller ends, provide improved lubrication, reduced friction and consequently lower operating temperature.
The ring with the integral flanges together with the cylindrical roller and cage assembly can be separated
from the other ring. This results in easy mounting and dismounting, particularly where the load conditions
are such that interference fits are required for both rings.
Single row cylindrical roller bearings can accommodate heavy radial loads and high speeds. They are
manufactured in several different designs, the main difference being in the configuration of the flanges.
The most popular are the NU, N, NJ and NUP designs.
NU design ( Cylindrical roller bearings, single row )
The outer ring of bearings of the NUdesign (fig) has two integral flanges and the inner ring is without
flanges. Axial displacement of the shaft with respect to the housing can be accommodated in both directions
within the bearing itself.The bearings are therefore used as non-locating bearings. For manufacturing and
maintenance reasons, the two outer ring flanges of large-size bearings of the NU design which are
identified by a Drawing No. may not be integral but take the form of loose flange rings.
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