Chain Pulleys are attached to the hydraulically actuated upper section of the mast and serve to deflect the pulling chain.
Due to their relatively thick-walled outer ring, the Chain Pulley can accommodate high radial loads. These loads are resulting from the deadweights of the fork support, the forks and the payload. The outer ring profile is dictated by the dimensions and design of the pulling chain used. The two lips on the outer ring profile are providing lateral guidance of the chain. The distance between the two ball rows along with their contact angle care for a wide load support base, so that the Chain Pulleys can also absorb tilting and axial guiding forces.