Specification Brand : Martin BulletPoint1 : Single strand sprocket with one set of teeth around the circumference for applications where a single chain can support the torque and load BulletPoint2 : Pitch of 3/4 inch for size 60 chains BulletPoint3 : Sprocket bore has tapering grooves for inserting and locking into place a taper bushing that fits the diameter of the shaft BulletPoint4 : Type B sprocket with a hub projection on one side to accommodate various types of bushings to help prevent sprocket from slipping on the shaft BulletPoint5 : Sprocket teeth help prevent slipping and binding to avoid power loss in assemblies ExternallyAssignedProductIdentifier1 : 697950031828 ExternallyAssignedProductIdentifier2 : 0697950031828 ExternallyAssignedProductIdentifier3 : 00097039331786 ItemName : Martin Roller Chain Sprocket, Taper Bushed, Type B Hub, Single Strand, 60 Chain Size, For 2012 Bushing, 0.75" Pitch, 40 Teeth, 2" Max Bore Dia., 9.98" OD, 3.5625" Hub Dia., 0.444" Width ItemPackageDimensions_Height : 3.048 centimeters ItemPackageDimensions_Length : 25.35 centimeters ItemPackageDimensions_Width : 25.35 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : roller-chain-sprockets Manufacturer : MARTIN Material : Carbon Steel ModelNumber : 60BTB40 NumberOfItems : 1 NumberOfRows : 1 NumberOfTeeth : 40 PartNumber : 60BTB40 ProductDescription : 50 Roller Chain Sprocket 17 Teeth 3/4" Bore 50B17-3/4 50BS17H-3/4 ProductSiteLaunchDate : 2010-09-29T00:00:01-00:00 Size : 60 Style : Taper Bushed UnspscCode : 31171901