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, Heavy-Duty, QD Bore Type, 7/8 to 3-1/2 in Bore Dia, 10.6 in Outside Dia, 21.1 in, 10 Grooves, 4.34 in Face Width, E Bushing, 2-3/4 in Overall Length, For Use With: 3V Cross Section Belts, Cast Iron, Gray Isolates shock loads and vibrationMinor misalignment capabilityDrive ratios of 6:1 or more possibleLow maintenanceNo lubrication requiredTypically 95% efficiency can be obtained