The 'optimised INA profile' - which was first used by INA in a range of
track rollers based on cylindrical elements - has now been adopted in a
new range of yoke and stud type needle element track rollers. The track
rollers now have contact seals with plastic axial plain washers that
reduce friction, improving performance under skewed running and tilting.
A hexagonal socket is built into both ends of the stud type roller for
easier fitting; the feature enables an Allen key to be applied to the
flanged end, while the fixing nut on the threaded stud end is tightened.
Re-lubrication is also now possible from either end.