Double V-Belts (Hex Belts), AA, BB, CC Sections

Double V-belts, also called hexagonal belts or double-angle belts, transmit power from both sides of the belt. Texas Belting & Supply stocks 137 Megadyne double V-belts in AA, BB, and CC sections with effective lengths from 52 to 424 inches, shipping same-day from our Houston, TX warehouse.

What Is a Double V-Belt?

A double V-belt has a symmetrical hexagonal cross-section, essentially two classical V-belts molded back to back. Because both faces engage pulley grooves, double V-belts drive serpentine systems where pulleys rotate in opposite directions, such as agricultural implements, round balers, and multi-shaft industrial drives. Sections correspond to classical widths: AA (1/2"), BB (21/32"), and CC (7/8").

Selecting the Right Belt

Match the section to your pulley groove (AA fits A-section grooves, BB fits B, CC fits C), then match the effective length. Megadyne double V-belts are built on a neoprene body with high-strength tensile cords; notched (raw-edge) versions and aramid-reinforced versions are available for higher loads and smaller pulleys.

Frequently Asked Questions

What is the difference between a double V-belt and a hex belt?

Nothing, they are two names for the same belt. Double V-belt, hexagonal belt, and double-angle belt all refer to a belt with a six-sided cross-section that drives from both faces.

Do Megadyne double V-belts replace Jason Industrial double V-belts?

Yes. Jason Industrial belts are now produced under the Megadyne brand. A Megadyne AA, BB, or CC belt with the same part number is a one-for-one replacement for the Jason Industrial belt.

What equipment uses double V-belts?

Serpentine drives where pulleys turn in opposite directions: round balers, mower decks, grain handling equipment, and industrial drives with multiple driven shafts.

Related: V-Belts | B Section | C Section