Sheaves are manufactured in Dodge plants under strict quality control assurances. Precision machining meets or exceeds joint extended belt life. Dodge manufactures all sheaves in plants certified to ISO 9002 quality standards. Dodge Sheave, Type A1, Taper-Lock Bore Type, 1/2 to 2-11/16 in Bore Dia, 6.15 in Outside Dia, 5.78 in (A)/6.16 in (B) Pitch Dia, 4 Grooves, 3-1/4 in Face Width, 2517 Bushing, For Use With: A and B Cross Section V-Belts, Cast Iron Isolates shock loads and vibrationMinor misalignment capabilityDrive ratios of 6:1 or more possibleLow maintenanceNo lubrication requiredQuiet operationTypically 95% efficiency can be obtained