EC210 EC240 D6E BF6M2012 V-grooved pulley 04256766 20459155

V-grooved pulley 04256766 is used to help hold the belt in place as it rotates around the pulley. The belt itself will be designed to work with grooved pulleys. A belt that is properly tensioned and passed through the pulleys will not slip at all, and since the belt is designed to resist stretching, periodic tensioning is not necessary.