A tracked work machine having a track roller assembly comprising: a drive wheel; an idler wheel; an endless track belt disposed about the drive and idler wheels, the endless track belt at least in part made of a rubber material and defining an inner surface, a ground contacting or outer surface, and a pair of edges, wherein the endless track belt comprises a plurality of track guide blocks positioned on the inner surface and centrally located between the pair of edges on a track center axis; a plurality of supporting mid-rollers located between the drive wheel and the idler wheel and configured to engage the plurality of guide blocks to aid in maintaining alignment of the endless track belt, each mid-roller comprising: a cylindrical shaft defining a shaft axis extending to outer ends of the shaft; a pair of hubs assembled about the cylindrical shaft, each hub having a cylindrical housing with a flange portion projecting radially outward from the shaft axis; a pair of metallic roller wheels mounted on the pair of hubs, each roller wheel having a radial face connected to the flange portion of its respective hub and an outer cylindrical housing symmetrical with the shaft axis defining an outer peripheral surface having an elastomeric coating bonded thereon configured to engage the inner surface of the endless track belt, characterized in that each roller wheel further defines an inner shoulder having a recess formed therein; and each pair of roller wheels further comprises a pair of non-metallic, ring-shaped reduced-friction guides, wherein each roller wheel has one of said reduced-friction guides pressed into the recess on the inner shoulder of the roller wheel such that the reduced-friction guide interacts with the track guide blocks such that the reduced-friction guide is configured to be the frictional point of contact between the mid-roller and the plurality of track guide blocks. a drive wheel; an idler wheel; an endless track belt disposed about the drive and idler wheels, the endless track belt at least in part made of a rubber material and defining an inner surface, a ground contacting or outer surface, and a pair of edges, wherein the endless track belt comprises a plurality of track guide blocks positioned on the inner surface and centrally located between the pair of edges on a track center axis; a plurality of supporting mid-rollers located between the drive wheel and the idler wheel and configured to engage the plurality of guide blocks to aid in maintaining alignment of the endless track belt, each mid-roller comprising: a cylindrical shaft defining a shaft axis extending to outer ends of the shaft; a pair of hubs assembled about the cylindrical shaft, each hub having a cylindrical housing with a flange portion projecting radially outward from the shaft axis; a pair of metallic roller wheels mounted on the pair of hubs, each roller wheel having a radial face connected to the flange portion of its respective hub and an outer cylindrical housing symmetrical with the shaft axis defining an outer peripheral surface having an elastomeric coating bonded thereon configured to engage the inner surface of the endless track belt, characterized in that each roller wheel further defines an inner shoulder having a recess formed therein; and each pair of roller wheels further comprises a pair of non-metallic, ring-shaped reduced-friction guides, wherein each roller wheel has one of said reduced-friction guides pressed into the recess on the inner shoulder of the roller wheel such that the reduced-friction guide interacts with the track guide blocks such that the reduced-friction guide is configured to be the frictional point of contact between the mid-roller and the plurality of track guide blocks. a cylindrical shaft defining a shaft axis extending to outer ends of the shaft; a pair of hubs assembled about the cylindrical shaft, each hub having a cylindrical housing with a flange portion projecting radially outward from the shaft axis; a pair of metallic roller wheels mounted on the pair of hubs, each roller wheel having a radial face connected to the flange portion of its respective hub and an outer cylindrical housing symmetrical with the shaft axis defining an outer peripheral surface having an elastomeric coating bonded thereon configured to engage the inner surface of the endless track belt, characterized in that each roller wheel further defines an inner shoulder having a recess formed therein; and each pair of roller wheels further comprises a pair of non-metallic, ring-shaped reduced-friction guides, wherein each roller wheel has one of said reduced-friction guides pressed into the recess on the inner shoulder of the roller wheel such that the reduced-friction guide interacts with the track guide blocks such that the reduced-friction guide is configured to be the frictional point of contact between the mid-roller and the plurality of track guide blocks.