Continental Contitech 20039645 BX270 Torque-flex V-belt Bx

Product Description

The CONTINENTAL CONTITECH 20039645 is a BX-section Torque-Flex V-belt designed for industrial and HVAC drive applications requiring a cogged, fiber-reinforced construction. Manufactured from Fiber Reinforced Vytracord, this belt delivers flex resistance and load capacity suited to high-torque, variable-speed drives. The outside length measures 271.5 inches with an internal length of 270.30 inches. The BX section profile fits standard BX sheaves and is a common replacement belt in blower, compressor, and pump drive assemblies across commercial and residential mechanical systems.

This belt is used in belt-drive systems where a cogged BX-section profile is specified. Typical applications include commercial air handling units, packaged rooftop units, centrifugal fans, agricultural equipment, and industrial machinery requiring a raw-edge cogged belt for improved grip and reduced heat buildup. The Torque-Flex style designation indicates the cogged underside construction, which reduces bending resistance and is preferred in drives with smaller sheave diameters or high-load cycling. Installation is performed by HVAC technicians, millwrights, and mechanical service professionals.

Key Features

• BX-section cogged V-belt profile fits standard BX sheaves
• Fiber Reinforced Vytracord construction provides high tensile strength and flex fatigue resistance
• Torque-Flex style cogged underside reduces bending resistance on smaller sheaves
• 271.5 inches outside length with 270.30 inches internal length for precise drive sizing
• Single-belt package quantity suitable for direct replacement service calls

Compatibility

Designed as an OEM-style replacement for BX270 belt applications in belt-drive systems specifying a BX-section cogged V-belt.

Installation Notes

BX V-belts are installed by HVAC technicians and mechanical trades. Always de-energize and lock out the drive unit before replacing a belt. Relieve sheave center distance to allow belt installation without forcing the belt over sheave flanges, which can damage the cord construction. After seating the belt, adjust center distance to achieve proper tension per the drive manufacturer specification before returning the system to service.