The drive and guide wheels are custom-made, so that bores and hubs can be made to meet individual project requirements.
The designer has to select a shaft-hub assembly strong enough to bear the forces it will have to withstand. RUD specifies the dimensions and geometries of the pocket contour to match the RUD chain used and the chain tolerances, so that they are optimally matched, and the chain runs quietly with little wear.
The wheels are machined on all sides to the tightest tolerances, and case-hardened to reduce wear.
RUD drive and guide wheels are made so that both the horizontal and vertical chain links are supported on an extensive polygonal surface.
Only by supporting the vertical and horizontal chain links on an extensive surface are forces optimally transmitted into the individual chain links as they run over the wheel and tensions in the chain links minimized.