A-AA79-AI Double V-Belt (1/2" X 81")

One New Aftermarket Replacement AA79 Double V-Belt (Hex Belt) - AA Section, 1/2" x 81"

This AA79 Double V-Belt (also called a Hex Belt or Double Angle V-Belt) is an AA-section power transmission belt measuring 1/2" top width with an 81" outside circumference. Unlike standard single-sided V-belts, the AA79's hexagonal profile allows it to transmit power from both sides of the belt, making it the correct choice for serpentine drives and reverse-bend drive systems where one or more idler pulleys contact the back of the belt. It is commonly used in agricultural machinery, lawn and garden equipment, industrial drives, and OEM multi-pulley systems.

Specifications

• Belt Section: AA (Double Angle / Hex)
• Top Width: 1/2" (12.7 mm)
• Belt Depth: 0.42" (10.67 mm)
• Outside Circumference: 81" (approx. 82.4" measured OC per industry standard)
• Profile: Hexagonal - dual-sided power transmission
• Compatible Pulleys: Standard A-section sheaves/pulleys
• Conforms to ARPM Standard IP-21
• Oil resistant, heat resistant, and static dissipating construction

Applications

AA-section Double V-Belts are used on drives with one or more reverse bends, and wherever power must be transmitted to pulleys on both the inner and outer belt surfaces. Common applications include agricultural equipment drives, lawn and garden mowers, combines, hay equipment, industrial conveyors, and multi-pulley serpentine drive systems.

Replaces Part Number(s):

AA79, A-AA79-AI

New aftermarket replacement part - not remanufactured, not used.