The outer rings have a crowned or cylindrical outside surface. Designs with a crowned outside surface are used where they are inclined in relation to the mating track and edge stresses must be avoided.

Yoke type track rollers have outer rings with a crowned or cylindrical outside surface, inner rings and ball and cage assemblies with plastic cages. They are similar in construction to deep groove or angular contact ball bearings and are mounted on shafts or studs.

• LR6, LR60 and LR2 series are single row units

• LR50, LR52 and LR53 series are double row units

• LFR5, outer ring has a gothic arch profile

• Greased using a lithium soap grease to GA13

2Z - Sealing shields on both sides

X - Cylindrical outside surface

2RS - Lip seals on both sides, giving axial sealing action