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 1/2 inch for size 40 chains BulletPoint3 : Sprocket bore and hub with QD fittings for inserting and locking bushings into place 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 Color : Black ExternallyAssignedProductIdentifier1 : 697950007045 ExternallyAssignedProductIdentifier2 : 0697950007045 ItemDisplayDimensions_Height : 0.2 inches ItemDisplayDimensions_Length : 1.5 inches ItemDisplayDimensions_Width : 1.5 inches ItemDisplayWeight : 0.25 pounds ItemName : Martin Roller Chain Sprocket, QD Bushed, Type B Hub, Single Strand, 40 Chain Size, For Sk Bushing, 0.5" Pitch, 96 Teeth, 2.625" Max Bore Dia., 15.573" OD, 3.875" Hub Dia., 0.284" Width ItemPackageDimensions_Height : 9.652 centimeters ItemPackageDimensions_Length : 28.448 centimeters ItemPackageDimensions_Width : 38.862 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : roller-chain-sprockets Manufacturer : MARTIN Material : Carbon Steel ModelNumber : 25 Roller Chain Sprocket NumberOfItems : 1 NumberOfRows : 1 NumberOfTeeth : 96 PartNumber : 40SK96 ProductDescription : Sprocket and chain must match each other to normal use, choose sprocket, need to consider the following factors: 1.style of sprocket Type A (Flat sprocket, no hubs) Type B (1 Hub) Type C (2 Hubs) 2.Number of Teeth needed. 3.Sprocket bore size. If you choose the sprocket according to the chain, you also need to confirm the pitch of the chain and the diameter of the chain roller. #25 SPROCKET SPECIFICATIONS Hub Style:B Type Teeth:11 Pitch Size :1/4" Bore :1/4" Keyway:NO Material : AISI 1045 Medium Carbon Steel Chain:#25 Chain Total thickness : 0.59" Outside Diameter:1" Hub Diameter: 0.59" ProductSiteLaunchDate : 2010-09-29T08:00:01.000Z Size : 40 Style : QD Bushed SupplierDeclaredDgHzRegulation : not_applicable UnspscCode : 31171901