NEEDLE BEARINGS - CAGE TYPE - WITHOUT INNER RACE
Appropriate Inner Race
1) Material - Outer races, inner races and rollers are
made from 52100 steel and hardened to Rockwell hardness 60-64 RC.
These bearings are equipped with stamped steel cages. 2)
Lubrication - Outer races have an external centered oil groove and
one oil hole. Inner races have an internal centered oil groove and
one oil hole. 3) For applications where the bearing is run
directly on the shaft, no inner race is required. The shaft hardness
should be 60 Rockwell C scale.