Advanced materials & tribology supplies non-separable type roller followers. Advanced materials & tribology offers a wide range of oil-less self-lubricated bearings and plates, self lubricating bushes and pump bearings. Advanced materials & tribology is an iso accredited company. The non-separable type roller followers are not a separable bearing available with side plates fixed to the inner ring. The followers comes with spherically machined outer ring of the outer diameter for effective contribution to edge load mitigation.