Cam Rollers
Track
runner bearings are rolling bearings having a particularly thick-walled
outer ring, can accommodate heavy as well as shock loads. They are used in
all types of cam drives, tracks, conveyor systems etc.
Cam rollers are ball bearing with typically thick-walled outer ring. They
are ready-to-mount units for all types of cam drives, conveyor systems etc.
They can be narrow or wide with crowned runner surface. The wide rollers may
also have a flat runner surface. Cam rollers with crowned runner surfaces
where the misalignment and edge stress are minimum.
Narrow Cam Rollers or Single Row Cam Rollers are based on deep groove ball
bearings in the 62 series. They have a crowned runner surface and contact
seals on both sides. Wide cam rollers have been modified from double row
angular contact ball bearings and have a 25° contact angle. They are
fitted with pressed steel shields which. Wide cam rollers may have a crowned
runner surface or a cylindrical (flat) runner.
Tolerance - Cam rollers have normal tolerances as
standard, except for the tolerance of the crowned runner surface diameter
which is twice the Normal tolerance.
Internal Clearance - The narrow cam rollers have C3 radial
internal clearance as standard. The wide cam rollers are produced with the
Normal axial internal clearance of double row angular contact ball bearings.
Cages -The narrow cam rollers have a pressed steel cage.
The wide cam rollers have two snap-type cages of polyamide 6,6.
Load Carrying Ability - The outer ring of a cam roller 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 rollers are used for radial
loads. If axial loads act on the outer ring they will produce tilting
moments in the cam roller.
