Cam Followers

Cam
followers are similar to needle or cylindrical roller bearings with a
thick-walled outer ring. The crowned outer surface of the outer ring
prevents edge stresses if the roller runs in a tilted or inclined position.
They are grease filled ready-to-mount units suitable for all types of cam
drives, tracks and conveyor systems etc.
Instead of an inner ring cam followers have a solid threaded pin to allow
the cam follower to be quickly and easily attached to the machine components
by means of a hexagonal nut. Axial guidance is provided by an integral
flange on the outer ring at the head of the pin and a side.
Cam followers are available in three different internal designs. Generally,
the cam followers have concentric seating on the pin, but some are also
available with an eccentric collar shrunk on to the stud. Cam follower
bearings with collar enable an optimum interaction with the cam and allow
less stringent manufacturing tolerances for the components.
Internal Clearance - The cam followers are produced with a
radial internal clearance, which corresponds to the ones, specified for
needle roller bearings and cylindrical roller bearings.
Cages - The cages of cam followers are made of steel.
Load Carrying Ability - The outer ring of a cam follower
has only a small contact area with the surface. The actual contact area
depends on the load and the crowning. The deformation of the outer ring
caused by this limited contact alters the force distribution in the bearing
and thus has an influence on load carrying ability. Cam followers are used
for radial loads. If axial loads act on the outer ring they will produce
tilting moments in the cam roller.