SPC630X3 manufactured by Dunlop can be used with a 4040 bush, Part numbers are identified by 3 letters (e.g. SPC) which represents the beltcross section, a 2, 3 or 4 digit number (e.g. 630) which is the pulleys pitch diameter and a 1 or 2 digit number (e.g. 3) the number of grooves/belts to be run in the drive, for example SPC630X3. |