Different from bearings that are always mounted in a housing, the cam roller is designed to roll on a cam or a rail; its outer ring is therefore thicker.
There are rollers with or without spindles.
The needle (or roller) technology) allows high intensity radial loads to be supported (with cage: KR, NA22, NATR) even very high intensity (with needle rollers: KRV, NATV).
Multiple variants exist: sealed versions (...LL), with a cylindrical outer diameter (...X) for better guide precision, hexagonal hole (...H) or screwdriver slot to fix the roller spindle, tapped greasing hole for centralised lubrication systems (KRT, KRVT).
A range of miniature rollers (KRM) also exists.
Dimensions: 4 to 180 mm