Continental Contitech 20039637 Bx V-belt 176 in BX173

Product Description

The CONTINENTAL CONTITECH 20039637 is a BX-section cogged V-belt built for industrial and HVAC drive applications where a standard B-section belt is not sufficient for high-torque or high-temperature conditions. Constructed from fiber-reinforced Vytracord, this belt delivers superior tensile strength and flex resistance compared to conventional rubber belts. The outside length measures 176 inches, with an internal length of 174.80 inches. It is sold individually and is installed by HVAC technicians, millwrights, and mechanical contractors on sheave-driven systems ranging from air handlers to compressors and blowers.

This belt is designed for use in Torque-Flex drive configurations where cogged construction reduces bending stress and heat buildup. The BX section designation indicates a cogged version of the standard B-section profile, making it suitable for small-diameter sheave applications common in residential and light commercial HVAC systems, as well as industrial fan and pump drives. The belt number BX173 is the industry-standard cross-reference for this size and section. It is sold as a single unit per package.

Key Features

• BX cogged section profile reduces bending stress and heat buildup on small-diameter sheaves
• Fiber-reinforced Vytracord construction provides high tensile strength and dimensional stability
• 176-inch outside length with 174.80-inch internal length for precise drive sizing
• Torque-Flex style design suited for high-torque and variable-load drive applications
• Industry belt number BX173 allows direct cross-reference to OEM and aftermarket applications

Compatibility

This belt is identified by the standard belt number BX173 and is compatible with drive systems designed for BX-section cogged V-belts of 176-inch outside length. Verify sheave groove profile and center distance before installation.

Installation Notes

Installation should be performed by a qualified HVAC technician or mechanical contractor. Always de-energize and lock out the drive system before removing or installing belts. Never pry a belt over a sheave flange; adjust center distance to allow the belt to seat naturally in the groove. After installation, verify proper belt tension and sheave alignment before returning the system to service.