Gearbelt Pulley Bore Diameter 1 in For Belt Series SilentSync For Belt Width 35 mm For Use With SilentSync Blue Belts Material Ductile Iron Number of Teeth 60 Outside Diameter 264.59 mm Pitch 14 mm Pitch Diameter 267.39 mm Bore Type Plain Face Width 37 mm Features Self-Tracking Design For Belt Trade Size B-60S Keyway No Keyway Depth Not Applicable Keyway Width Not Applicable Length through Bore 37 mm Material Fabrication Machined Maximum Operating Temperature 200 Degrees F