3V, 5V and 8V Wedge V Belts

3V, 5V, and 8V Wedge V-Belts – High-Performance Industrial Power Transmission Belts

3V, 5V, and 8V wedge V-belts are precision-engineered power transmission belts designed for high-torque, high-speed industrial applications. These belts feature a narrow profile, enabling superior performance with greater power capacity in compact drive designs. Available in standard, cogged (notched), and banded configurations, wedge V-belts are ideal for applications demanding efficiency, space savings, and long service life.

What Are Wedge V-Belts?

Wedge V-belts differ from classical V-belts by having a narrower cross-section, which allows for higher power transmission per inch of width. Their design reduces slippage and heat buildup, increasing energy efficiency and durability. The “V” shape wedges firmly into the pulley groove, maximizing traction and torque.

3V, 5V, and 8V Belt Specifications:

• Material: High-strength neoprene or EPDM rubber

• Reinforcement: Tensile cords (polyester, aramid for high-load)

• Temperature Range: -30°F to 140°F

• Standards: RMA / ARPM IP-22, ISO 4184

Cogged (Notched) Wedge Belts:

Cogged wedge belts (e.g., 3VX, 5VX, 8VX) are precision-notched for increased flexibility and better heat dissipation. This allows for:

• Use on smaller pulley diameters

• Higher efficiency and longer belt life

• Reduced energy consumption

Cogged belts are ideal in environments with frequent starts and stops, or where compact drives are required.

Banded Wedge Belts:

Banded belts (e.g., 3V/2, 5V/3, 8V/5) consist of multiple single belts joined by a reinforced backing. They provide:

• Vibration resistance

• Better belt tracking

• Load sharing across all ribs

Banded wedge belts are used in shock-load or high-vibration environments where belt whipping or turnover is a concern.

Applications:

3V Wedge Belts:

• Light-duty HVAC units

• Compressors

• Agricultural equipment

• Small machine tools

5V Wedge Belts:

• Industrial fans and blowers

• High-capacity pumps

• Conveyors and crushers

• Processing equipment

8V Wedge Belts:

• Rock crushers and heavy machinery

• Oilfield drilling equipment

• Mining and quarry operations

• Large industrial HVAC systems

Benefits of Wedge V-Belts:

• Higher horsepower ratings with fewer or smaller belts

• Compact drive design reduces system footprint

• Extended service life with reduced maintenance

• Energy savings through improved efficiency

3V, 5V, and 8V wedge V-belts—available in standard, cogged, and banded options—are the preferred choice for industrial drive systems requiring high torque, precision, and reliability. Their superior load-carrying capabilities and compact form make them indispensable in industries such as HVAC, mining, oil & gas, manufacturing, and agriculture.

Need help selecting the right belt for your application? Contact our experts today for cross-references, OEM replacements, and immediate availability from our wide inventory of wedge V-belts.