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The JASON INDUSTRIAL A39 is a classic A-section rubber V-belt designed for industrial power transmission applications. Measuring 1/2 inch wide with a 41-inch outside circumference, this belt is built to transfer rotational power between sheaves and pulleys in demanding mechanical drive systems. The black rubber construction provides flexibility and durability across a range of operating conditions. Licensed HVAC technicians, industrial mechanics, and equipment service professionals install this belt type as a direct replacement in belt-driven fan, blower, compressor, and pump assemblies.
This A39 V-belt is suited for light to medium industrial drive applications including HVAC air handlers, rooftop units, belt-driven blowers, agricultural equipment, and general industrial machinery. The A-section profile is one of the most widely used classical belt cross-sections in commercial and residential mechanical equipment. It is commonly found in older and current-production equipment using standard fractional-horsepower to medium-horsepower drives. Sold in a package quantity of 50, this SKU is appropriate for stocking distributor shelves or fleet maintenance programs requiring frequent belt changeouts.
Designed as an OEM-style replacement for equipment requiring a classical A-section V-belt with a 41-inch length. Fits any drive system configured for an A39 belt designation using standard A-groove sheaves.
V-belt replacement is typically performed by HVAC technicians and industrial mechanics. Always disconnect and lock out electrical power to the equipment before removing the belt guard or accessing the drive system. Adjust sheave spacing to allow belt installation without forcing, then tension the belt according to the equipment manufacturer's deflection specification before returning the unit to service. Inspect sheave grooves for wear, misalignment, or debris before installing a new belt.
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